Most world natural heritage sites are designated partly by reason of their prominent aesthetic values in accordance with Article Ⅶ of World Natural Heritage Convention.In this paper, the aesthetic values of Kanas Nat...Most world natural heritage sites are designated partly by reason of their prominent aesthetic values in accordance with Article Ⅶ of World Natural Heritage Convention.In this paper, the aesthetic values of Kanas National Nature Reserve, which has potential for such designation, was analyzed quantitatively using scenic beauty estimation(SBE).The landscapes of 19 representative scenic spots in the Kanas National Nature Reserve in summer and autumn were selected as the objects of evaluation.The contributions of different landscape factors to the aesthetic value of the Kanas National Nature Reserve were revealed using a multivariate quantitative model.The main factors affecting the aesthetic value were waterscapes, vegetation, mountains, folk culture and the tourist environment.The t-test and F-test results are extremely significant.According to the results, some suggestions were given for conserving the landscapes in the Kanas National Nature Reserve.展开更多
In this study,we used remotely sensed data,GIS modeling,and statistical methods to evaluate the damage caused by the Wenchuan Earthquake (May 12,2008) to the giant panda (Ailuropoda melanoleuca) habitat in the World N...In this study,we used remotely sensed data,GIS modeling,and statistical methods to evaluate the damage caused by the Wenchuan Earthquake (May 12,2008) to the giant panda (Ailuropoda melanoleuca) habitat in the World Nature Heritage Sichuan Giant Panda Sanctuary (WHSGPS) in China.A landscape ecological analysis found increases of landscape heterogeneity,complexity,and fragmentation in the giant panda habitat after the earthquake.A terrain analysis found that slope and elevation are directly associated with the distribution of the damaged areas.As slope and elevation increase,the size of the damaged area keeps increase until to a peak,and then starts to drop.The total area of the damaged vegetation in our study area is 114.26 km 2,accounting for 3.78% of the study area;30.46% of that 114.26 km 2 is located in the Core Zone of WHSGPS.There are 18.57km 2 of the damaged vegetation located in the identified suitable giant panda habitat,accounting for 1.75% of the total area of suitable giant panda habitats in the study area.Based on these findings,we conclude that the Wenchuan Earthquake does not have significant impact on the WHSGPS as a whole.展开更多
The establishment of nature reserves is a key approach for biodiversity conservation worldwide. However, there is a lack of unified methodology to evaluate the effectiveness of nature reserves, particularly in China, ...The establishment of nature reserves is a key approach for biodiversity conservation worldwide. However, there is a lack of unified methodology to evaluate the effectiveness of nature reserves, particularly in China, the world′s most populous nation supporting some of the most valuable biodiversity hotspots in the world. In this study, we conducted a long-term and large-scale analysis of the effectiveness of 20 of the earliest nature reserves established in Hainan Province, an island home to among the highest concentration of plants and animals in China. Remote sensing imagery from 1988, 1998, and 2008 were analyzed to investigate the temporal and spatial changes of natural forests in these nature reserves and surrounding areas. We also conducted transition matrix analysis and principle component analysis to identify the driving factors that affect the protection effectiveness of nature reserves. The results were as follows: 1) During the 20-year period from 1988 to 2008, natural forests coverage of the 20 studied nature reserves dropped 2.34 percentage points, whereas the natural forests coverage dropped 11.31 percentage points in a 0–5 km outside reserve buffer and 9.36 percentage points in a 5–10 km outside reserve buffer, indicating a significant inhibitory effect of the nature reserves on the loss of natural forests. 2) Natural forests coverage dropped in 60% of the studied nature reserves during the 20-year period, suggesting a poor protection effectiveness of these reserves, while the coverage proportion showed some increase(0%/yr–5%/yr) in other reserves. 3) Expansion of rubber and pulp forests as part of a booming economy were the main factors affecting the effectiveness of the nature reserves for conserving natural forests in Hainan Province. The results of this study provide an important empirical basis for the protection of natural forests in Hainan Province, which can be used as a blueprint for nature reserve evaluation in other places in China.展开更多
Mangrove forests occur extensively in the tropic areas rich in wildlife and other non forestry resources and provide a wide array of raw materials for livelihood and production processes and have been a major source o...Mangrove forests occur extensively in the tropic areas rich in wildlife and other non forestry resources and provide a wide array of raw materials for livelihood and production processes and have been a major source of income generation and subsistence for the local people. Exploitation of timber, fuel wood, poles, industrial raw material, and many other non wood products from the mangrove forests give rise to large scale economic activity and income generation. At present, mangrove forests are facing great peril. Reckless exploitation and swampland reclamation result in their gradual degradation. This article deals with the worlds mangrove forest resources and their benefit to people; describes the current status, points out the main causes of the destruction of these forests, presents proposals for protecting mangrove forests, and discusses international cooperation in protecting the world’s mangrove forests.展开更多
Handicraft villages play an important role in promoting social and economic development in rural areas as well as Vietnam's economy. Nowadays, Vietnam's handicrafts have a foothold in the world market, and are expor...Handicraft villages play an important role in promoting social and economic development in rural areas as well as Vietnam's economy. Nowadays, Vietnam's handicrafts have a foothold in the world market, and are exported over 163 countries and territories (Tuan, 2010). However, the production activities of the handicraft village have a lot of shortcomings, especially the problem of environmental pollution (Chi, 2010). Therefore, government policy plays a very important role to minimize environmental pollution villages, contributing to improving environmental quality and public health. This paper focuses on: 1). Current status of state policy environment in handicraft villages shows the achievements and limitations of the policy, from which reviews state policy in environments in handicraft villages (through fieldwork in the handicraft villages); and 2). Solution to improve state policy on environmental protection in handicraft villages in Vietnam.展开更多
Almost a decade has elapsed since the outbreak of the international financial crisis, during which the West was trapped in a dilemma unprecedented since the end of the Second World War. The problems facing the West, p...Almost a decade has elapsed since the outbreak of the international financial crisis, during which the West was trapped in a dilemma unprecedented since the end of the Second World War. The problems facing the West, particularly those of Europe and the US, are fundamental and institutional, including reduced economic superiority, political systems and development models seriously questioned, and increasing terrorist attacks bringing up security chaUenges, to mention just a few. Western obsession with multiple crises is another new factor of change with structural impacts on both the international structure and order over the past nearly thirty years following the disintegration of the Soviet Union and collective rise of emerging economies. The aftermath: the power and influence of the West is declining, with the grand trend of rising East and declining West persisting in the international structure; both Europe and the US have made major adjustments on their foreign strategies, while their value diplomacy offensive has been frustrated, and while trade protectionism is on the rise; and the major power relationship has seen a new round of adjustment. A comprehensive and in-depth understanding of the drastic changes in the West may help China stick to its own development path and promote global governance with more self-confidence so as to make more contributions to world peace, stability and development.展开更多
The rapid pace of development of GIS (geographical information system) has assisted in identification of conservation priority sites by delineating species distribution using models on habitat suitability. Gaur, Bos...The rapid pace of development of GIS (geographical information system) has assisted in identification of conservation priority sites by delineating species distribution using models on habitat suitability. Gaur, Bos gaurus, is categorized as "Vulnerable" in the IUCN Red List of Threatened Species, 2009. The study has used ENFA (ecological niche factor analysis) to understand the distribution status of Gaur in TATR (Tadoba-Andhari Tiger Reserve), Central India. TATR was sampled using stratified random sampling strategy. A total of 21 continuous variables were used, categorised under 4 environmental descriptors categories viz. habitat, anthropogenic, topographic and hydrological variables. All the variables were tested for the correlation and one of the variable among strongly correlated (r 〉 0.7) variables was discarded to avoid redundancy. A total of 14 variables were retained. The model resulted in marginality of 0.56 and specialization of 2.608. Presence of Gaur showed the positive association with canopy density classes (〈 30% & 40-60%) and open forest. However, it was negatively associated with elevation, non-forest, riparian forest, scrub and teak forest. The study has delineated the areas where appropriate habitat conditions exist to sustain Gaur populations vital for planning strategies for conservation of this megaherbivore species in tropical forests.展开更多
Groundwater in Egypt plays an important role in the country's water budget. South Western desert represent an arid of desert biome within world's net-work of the biosphere reserves. In this study, the plant wild veg...Groundwater in Egypt plays an important role in the country's water budget. South Western desert represent an arid of desert biome within world's net-work of the biosphere reserves. In this study, the plant wild vegetation were surveyed in Abu Tartur mining area located in the Southern part of Western depending essentially on the seepage from water line tubes which supplies water demands at Abu Tartur. The vegetation-environment relationships in Abu Tartur are described. Data sets (42 species in 38 plots) beside the pip-line enriched from 13 wells were analyzed, using multivariate procedures, i.e., two-way indicator species analysis (TW1NSPAN), detrended correspondence analysis (DCA) and detrended canonical correspondence analysis (CCA), to produce a classification of plant communities in the studied areas and to examine the relationships of that plant communities to certain edaphic factors. Five plant communities were identified. Astragalus vogelii, Chenopodium murale, Citrullus colocynthis, Fagonia arabica, Farsetia aegyptia, Hyoscyamus muticus, Morettia philaeana, Cynodon dactylon, Trichodesma africana, Tarnarix nilotica, Senna italica, Schouwia purpurea, Salsola volkensii and Phragmites australis were common in the study area. Phytochemical survey for nitroprpionic compounds in some taxa belonging to Fabaceae family showed the absence of these toxic compounds by using GC/MS analysis. Also some phytochemical components ofAstragalus vogalii were extracted and identified by GC/MS spectra. A biological activity, in this regard was the screening of methanol extracts for some wild taxa of Abu Tartur against natural Tetranychus urticae as acricidal activity and the methanol extracts of some taxa give high mortality results, like Farsetia aegyptia (86.6%) and Fagonia arabica Burm. f. (70.0%).展开更多
WTO, as the most influencing international economic organization, has given rise to some problems worthy of thinking deeply when creating a great trade platform for all countries. For example, the original ecological ...WTO, as the most influencing international economic organization, has given rise to some problems worthy of thinking deeply when creating a great trade platform for all countries. For example, the original ecological environment has been destroyed by the development of trade and economy, so that the countries from all over the world are encountering serious environmental crisis. In this paper, the current situation under the new economic environment is introduced first, the environmental protection mechanism in the report of the WTO panel, and also comprehensive countermeasures performed in the new environmental protection mechanism are proposed. Hopefully, this paper can play a help in the further researches.展开更多
ON April 8,2015 an infantry contingent from China arrived in South Sudan.This was the last batch of the 700-member Chinese infantry battalion designated for UN peacekeeping missions there,China's first,marking a new ...ON April 8,2015 an infantry contingent from China arrived in South Sudan.This was the last batch of the 700-member Chinese infantry battalion designated for UN peacekeeping missions there,China's first,marking a new stage of its participation in UN peacekeeping deployment.An Active Helper The UN aims to defend peace in the spirit of the UN Charter via peacekeeping operations.China,a permanent展开更多
Salim Ali's fruit bat (Latidens salimalii) is Endemic to Southern Western Ghats. India and is classified as Endangered by IUCN. Latidens is morphologically adapted to play a major role in the propagation of economi...Salim Ali's fruit bat (Latidens salimalii) is Endemic to Southern Western Ghats. India and is classified as Endangered by IUCN. Latidens is morphologically adapted to play a major role in the propagation of economically important trees: some of them are endemic to southern Western Ghats. This paper describes and documents, the bat"s ecology, foraging behavior and food selection. The study is based on the dietary details of the discovered populations of L. salimalii in the Agasthiyar hill range and the High Wavy Mountains of southern Western Ghats, India. Seeds. partially eaten fruits and seedlings germinated on the floor of the feeding roosts confirm this bat forage for fruits among relatively tall trees of evergreen forests in an elevation above 900 meter. Mist netting below and above canopy near the fruiting and flowering trees of their foraging area confirmed their interaction with certain endemic tree species. Their species specific dietars' preferences immensely help to restore and bring back the natural forest community structures.展开更多
A review of recent knowledge on raptor species in Sumatra (Indonesia) is discussed here. It summarized 34 raptor species recently known from Sumatra, updating previous 32 species. A total of 19 species was recorded ...A review of recent knowledge on raptor species in Sumatra (Indonesia) is discussed here. It summarized 34 raptor species recently known from Sumatra, updating previous 32 species. A total of 19 species was recorded resident in Sumatra, eight endemic subspecies, and 18 migratory species. The resident raptors in Sumatra have different breeding seasons. There are three raptors breeding in dry season, three between dry to rainy season, two raptors in rainy season and five raptors breeding between rainy to dry season. Most raptors in Sumatra breeds between rainy to dry season, consistent with major period of breeding season of bird in Sumatra. Four species have been listed as vulnerable and near threatened by IUCN. All Indonesian raptors have been protected by the Indonesian law. Therefore, this information will provide more significant recent knowledge of the raptor species in Sumatra to be used for updating the conservation status and preparing long term monitoring activities to support the conservation of Sumatran tropical forests.展开更多
The nominated property, Cat Ba Archipelago, includes Cat Ba Archipelago Biosphere Reserve, Cat Ba National Park, and Long Chau Island group, which belongs to Cat Hai District, Hal Phong City, Vietnam. Cat Ba Archipela...The nominated property, Cat Ba Archipelago, includes Cat Ba Archipelago Biosphere Reserve, Cat Ba National Park, and Long Chau Island group, which belongs to Cat Hai District, Hal Phong City, Vietnam. Cat Ba Archipelago represents the ongoing ecological and biological processes in the evolution and development of Asia's characteristic marine and insular ecosystems, both tropical and subtropic. The nominated property is a high biodiversity center with 3,860 species of plants and animals on islands and in the sea, of which 130 species are recorded on the Red Lists of Nationally and Internationally Threatened Species, and 76 species on the IUCN Red List of Globally Threatened Species. The iconic Cat Ba white-headed langur (Trachypithecus poliocephalus) is an endemic species indigenous to Cat Ba Archipelago where at present one population of 63 individuals only survives but nowhere else in the world. The Cat Ba white-headed langur is recognized as a critically endangered species facing an extremely high risk of extinction in the wild, thus needing urgent protection. The existence of another 20 endemic species in Cat Ba Archipelago shows that the process of evolution are on-going here, as new species continue to emerge in this unique archipelagic habitat.展开更多
With the world economic development, population growth and improvement of people' s living standard, the energy shortage has become the core issue of restricting the development of the world economy. China faces seri...With the world economic development, population growth and improvement of people' s living standard, the energy shortage has become the core issue of restricting the development of the world economy. China faces serious energy crisis and environmental problems, so the development of biofuels in China is vital. This paper introduces the advantages of duckweed for energy production, summarizes the research results of Chengdu Institute of Biology on duckweed, and provides the direction of its further studv.展开更多
The World Heritage Committee of UNESCO has called for a strategic commitment from its States Parties to strengthen links between heritage conservation and sustainable development. Fulfilment of this commitment will re...The World Heritage Committee of UNESCO has called for a strategic commitment from its States Parties to strengthen links between heritage conservation and sustainable development. Fulfilment of this commitment will require integration of the conservation of sites with the sustainable use and management of natural resources in a larger area beyond the boundaries of sites. Identification and demarcation of areas for conserving World Heritage sites and sustainable development of broader regions must derive from an in-depth knowledge of people-environment relationships. The management of Angkor-an iconic World Heritage site -has been primarily focused on conservation and restoration of monuments within the boundaries of the site. However, that focus is now shifting towards addressing environmental, social and economic challenges for sustainable development of the broader landscape described in this paper as the Angkor ecosystem. Angkor has the potential to demonstrate the application of an ecosystem approach to sustainable development--advocated under the UN Convention on Biological Diversity. The site could be a laboratory for new research on cultural ecosystem services as a tool for bridging site conservation to the sustainable development of the Siem Reap province where the site is located.展开更多
Different positions of the member states of the World Trade Organization (WTO), especially the developed and developing countries and also the United States of America (USA), the European Union (EU), and Japan r...Different positions of the member states of the World Trade Organization (WTO), especially the developed and developing countries and also the United States of America (USA), the European Union (EU), and Japan representatives, were observed during the Doha Round of trade negotiations under the WTO. The problems of agriculture protection in the developed countries, for example in the EU and USA and also in the developing countries, were becoming serious obstacles during the negotiations. Despite the undeniable benefits of the multilateral WTO forum for trade liberalization, the rapid increase of North-South bilateral and multilateral free trade areas (FTAs) begs a systematic explanation for why some forums are prioritized relative to others. The main aim of the article is the presentation of some new aspects of the international business theory in the context of international economy. The article presents the mercantilist tendencies in the international trade policy, the theory of public choice in the foreign trade policy, protectionist pressures in different political systems, the level of protectionist pressures, food producers' pressure, and conflicts between the tendencies to sustainable international trade liberalization and environmental protection.展开更多
基金Under the auspices of National Natural Science Foundation of China (No. 40671057)Project of Science and Technology Plan of Xinjiang Uygur Autonomous Region (No. 200933128)
文摘Most world natural heritage sites are designated partly by reason of their prominent aesthetic values in accordance with Article Ⅶ of World Natural Heritage Convention.In this paper, the aesthetic values of Kanas National Nature Reserve, which has potential for such designation, was analyzed quantitatively using scenic beauty estimation(SBE).The landscapes of 19 representative scenic spots in the Kanas National Nature Reserve in summer and autumn were selected as the objects of evaluation.The contributions of different landscape factors to the aesthetic value of the Kanas National Nature Reserve were revealed using a multivariate quantitative model.The main factors affecting the aesthetic value were waterscapes, vegetation, mountains, folk culture and the tourist environment.The t-test and F-test results are extremely significant.According to the results, some suggestions were given for conserving the landscapes in the Kanas National Nature Reserve.
基金supported by Sichuan Foundation of Excellent Scientists (Grant No.2010JZ0002)the Directional Project of Chinese Academy of Sciences (Grant No.KZX2-YW-333)
文摘In this study,we used remotely sensed data,GIS modeling,and statistical methods to evaluate the damage caused by the Wenchuan Earthquake (May 12,2008) to the giant panda (Ailuropoda melanoleuca) habitat in the World Nature Heritage Sichuan Giant Panda Sanctuary (WHSGPS) in China.A landscape ecological analysis found increases of landscape heterogeneity,complexity,and fragmentation in the giant panda habitat after the earthquake.A terrain analysis found that slope and elevation are directly associated with the distribution of the damaged areas.As slope and elevation increase,the size of the damaged area keeps increase until to a peak,and then starts to drop.The total area of the damaged vegetation in our study area is 114.26 km 2,accounting for 3.78% of the study area;30.46% of that 114.26 km 2 is located in the Core Zone of WHSGPS.There are 18.57km 2 of the damaged vegetation located in the identified suitable giant panda habitat,accounting for 1.75% of the total area of suitable giant panda habitats in the study area.Based on these findings,we conclude that the Wenchuan Earthquake does not have significant impact on the WHSGPS as a whole.
基金Under the auspices of Nationwide Remote Sensing Survey and Evaluation on Ecological Environment Change in 2000–2010(No.STSN-04-00)
文摘The establishment of nature reserves is a key approach for biodiversity conservation worldwide. However, there is a lack of unified methodology to evaluate the effectiveness of nature reserves, particularly in China, the world′s most populous nation supporting some of the most valuable biodiversity hotspots in the world. In this study, we conducted a long-term and large-scale analysis of the effectiveness of 20 of the earliest nature reserves established in Hainan Province, an island home to among the highest concentration of plants and animals in China. Remote sensing imagery from 1988, 1998, and 2008 were analyzed to investigate the temporal and spatial changes of natural forests in these nature reserves and surrounding areas. We also conducted transition matrix analysis and principle component analysis to identify the driving factors that affect the protection effectiveness of nature reserves. The results were as follows: 1) During the 20-year period from 1988 to 2008, natural forests coverage of the 20 studied nature reserves dropped 2.34 percentage points, whereas the natural forests coverage dropped 11.31 percentage points in a 0–5 km outside reserve buffer and 9.36 percentage points in a 5–10 km outside reserve buffer, indicating a significant inhibitory effect of the nature reserves on the loss of natural forests. 2) Natural forests coverage dropped in 60% of the studied nature reserves during the 20-year period, suggesting a poor protection effectiveness of these reserves, while the coverage proportion showed some increase(0%/yr–5%/yr) in other reserves. 3) Expansion of rubber and pulp forests as part of a booming economy were the main factors affecting the effectiveness of the nature reserves for conserving natural forests in Hainan Province. The results of this study provide an important empirical basis for the protection of natural forests in Hainan Province, which can be used as a blueprint for nature reserve evaluation in other places in China.
文摘Mangrove forests occur extensively in the tropic areas rich in wildlife and other non forestry resources and provide a wide array of raw materials for livelihood and production processes and have been a major source of income generation and subsistence for the local people. Exploitation of timber, fuel wood, poles, industrial raw material, and many other non wood products from the mangrove forests give rise to large scale economic activity and income generation. At present, mangrove forests are facing great peril. Reckless exploitation and swampland reclamation result in their gradual degradation. This article deals with the worlds mangrove forest resources and their benefit to people; describes the current status, points out the main causes of the destruction of these forests, presents proposals for protecting mangrove forests, and discusses international cooperation in protecting the world’s mangrove forests.
文摘Handicraft villages play an important role in promoting social and economic development in rural areas as well as Vietnam's economy. Nowadays, Vietnam's handicrafts have a foothold in the world market, and are exported over 163 countries and territories (Tuan, 2010). However, the production activities of the handicraft village have a lot of shortcomings, especially the problem of environmental pollution (Chi, 2010). Therefore, government policy plays a very important role to minimize environmental pollution villages, contributing to improving environmental quality and public health. This paper focuses on: 1). Current status of state policy environment in handicraft villages shows the achievements and limitations of the policy, from which reviews state policy in environments in handicraft villages (through fieldwork in the handicraft villages); and 2). Solution to improve state policy on environmental protection in handicraft villages in Vietnam.
文摘Almost a decade has elapsed since the outbreak of the international financial crisis, during which the West was trapped in a dilemma unprecedented since the end of the Second World War. The problems facing the West, particularly those of Europe and the US, are fundamental and institutional, including reduced economic superiority, political systems and development models seriously questioned, and increasing terrorist attacks bringing up security chaUenges, to mention just a few. Western obsession with multiple crises is another new factor of change with structural impacts on both the international structure and order over the past nearly thirty years following the disintegration of the Soviet Union and collective rise of emerging economies. The aftermath: the power and influence of the West is declining, with the grand trend of rising East and declining West persisting in the international structure; both Europe and the US have made major adjustments on their foreign strategies, while their value diplomacy offensive has been frustrated, and while trade protectionism is on the rise; and the major power relationship has seen a new round of adjustment. A comprehensive and in-depth understanding of the drastic changes in the West may help China stick to its own development path and promote global governance with more self-confidence so as to make more contributions to world peace, stability and development.
文摘The rapid pace of development of GIS (geographical information system) has assisted in identification of conservation priority sites by delineating species distribution using models on habitat suitability. Gaur, Bos gaurus, is categorized as "Vulnerable" in the IUCN Red List of Threatened Species, 2009. The study has used ENFA (ecological niche factor analysis) to understand the distribution status of Gaur in TATR (Tadoba-Andhari Tiger Reserve), Central India. TATR was sampled using stratified random sampling strategy. A total of 21 continuous variables were used, categorised under 4 environmental descriptors categories viz. habitat, anthropogenic, topographic and hydrological variables. All the variables were tested for the correlation and one of the variable among strongly correlated (r 〉 0.7) variables was discarded to avoid redundancy. A total of 14 variables were retained. The model resulted in marginality of 0.56 and specialization of 2.608. Presence of Gaur showed the positive association with canopy density classes (〈 30% & 40-60%) and open forest. However, it was negatively associated with elevation, non-forest, riparian forest, scrub and teak forest. The study has delineated the areas where appropriate habitat conditions exist to sustain Gaur populations vital for planning strategies for conservation of this megaherbivore species in tropical forests.
文摘Groundwater in Egypt plays an important role in the country's water budget. South Western desert represent an arid of desert biome within world's net-work of the biosphere reserves. In this study, the plant wild vegetation were surveyed in Abu Tartur mining area located in the Southern part of Western depending essentially on the seepage from water line tubes which supplies water demands at Abu Tartur. The vegetation-environment relationships in Abu Tartur are described. Data sets (42 species in 38 plots) beside the pip-line enriched from 13 wells were analyzed, using multivariate procedures, i.e., two-way indicator species analysis (TW1NSPAN), detrended correspondence analysis (DCA) and detrended canonical correspondence analysis (CCA), to produce a classification of plant communities in the studied areas and to examine the relationships of that plant communities to certain edaphic factors. Five plant communities were identified. Astragalus vogelii, Chenopodium murale, Citrullus colocynthis, Fagonia arabica, Farsetia aegyptia, Hyoscyamus muticus, Morettia philaeana, Cynodon dactylon, Trichodesma africana, Tarnarix nilotica, Senna italica, Schouwia purpurea, Salsola volkensii and Phragmites australis were common in the study area. Phytochemical survey for nitroprpionic compounds in some taxa belonging to Fabaceae family showed the absence of these toxic compounds by using GC/MS analysis. Also some phytochemical components ofAstragalus vogalii were extracted and identified by GC/MS spectra. A biological activity, in this regard was the screening of methanol extracts for some wild taxa of Abu Tartur against natural Tetranychus urticae as acricidal activity and the methanol extracts of some taxa give high mortality results, like Farsetia aegyptia (86.6%) and Fagonia arabica Burm. f. (70.0%).
文摘WTO, as the most influencing international economic organization, has given rise to some problems worthy of thinking deeply when creating a great trade platform for all countries. For example, the original ecological environment has been destroyed by the development of trade and economy, so that the countries from all over the world are encountering serious environmental crisis. In this paper, the current situation under the new economic environment is introduced first, the environmental protection mechanism in the report of the WTO panel, and also comprehensive countermeasures performed in the new environmental protection mechanism are proposed. Hopefully, this paper can play a help in the further researches.
文摘ON April 8,2015 an infantry contingent from China arrived in South Sudan.This was the last batch of the 700-member Chinese infantry battalion designated for UN peacekeeping missions there,China's first,marking a new stage of its participation in UN peacekeeping deployment.An Active Helper The UN aims to defend peace in the spirit of the UN Charter via peacekeeping operations.China,a permanent
文摘Salim Ali's fruit bat (Latidens salimalii) is Endemic to Southern Western Ghats. India and is classified as Endangered by IUCN. Latidens is morphologically adapted to play a major role in the propagation of economically important trees: some of them are endemic to southern Western Ghats. This paper describes and documents, the bat"s ecology, foraging behavior and food selection. The study is based on the dietary details of the discovered populations of L. salimalii in the Agasthiyar hill range and the High Wavy Mountains of southern Western Ghats, India. Seeds. partially eaten fruits and seedlings germinated on the floor of the feeding roosts confirm this bat forage for fruits among relatively tall trees of evergreen forests in an elevation above 900 meter. Mist netting below and above canopy near the fruiting and flowering trees of their foraging area confirmed their interaction with certain endemic tree species. Their species specific dietars' preferences immensely help to restore and bring back the natural forest community structures.
文摘A review of recent knowledge on raptor species in Sumatra (Indonesia) is discussed here. It summarized 34 raptor species recently known from Sumatra, updating previous 32 species. A total of 19 species was recorded resident in Sumatra, eight endemic subspecies, and 18 migratory species. The resident raptors in Sumatra have different breeding seasons. There are three raptors breeding in dry season, three between dry to rainy season, two raptors in rainy season and five raptors breeding between rainy to dry season. Most raptors in Sumatra breeds between rainy to dry season, consistent with major period of breeding season of bird in Sumatra. Four species have been listed as vulnerable and near threatened by IUCN. All Indonesian raptors have been protected by the Indonesian law. Therefore, this information will provide more significant recent knowledge of the raptor species in Sumatra to be used for updating the conservation status and preparing long term monitoring activities to support the conservation of Sumatran tropical forests.
文摘The nominated property, Cat Ba Archipelago, includes Cat Ba Archipelago Biosphere Reserve, Cat Ba National Park, and Long Chau Island group, which belongs to Cat Hai District, Hal Phong City, Vietnam. Cat Ba Archipelago represents the ongoing ecological and biological processes in the evolution and development of Asia's characteristic marine and insular ecosystems, both tropical and subtropic. The nominated property is a high biodiversity center with 3,860 species of plants and animals on islands and in the sea, of which 130 species are recorded on the Red Lists of Nationally and Internationally Threatened Species, and 76 species on the IUCN Red List of Globally Threatened Species. The iconic Cat Ba white-headed langur (Trachypithecus poliocephalus) is an endemic species indigenous to Cat Ba Archipelago where at present one population of 63 individuals only survives but nowhere else in the world. The Cat Ba white-headed langur is recognized as a critically endangered species facing an extremely high risk of extinction in the wild, thus needing urgent protection. The existence of another 20 endemic species in Cat Ba Archipelago shows that the process of evolution are on-going here, as new species continue to emerge in this unique archipelagic habitat.
文摘With the world economic development, population growth and improvement of people' s living standard, the energy shortage has become the core issue of restricting the development of the world economy. China faces serious energy crisis and environmental problems, so the development of biofuels in China is vital. This paper introduces the advantages of duckweed for energy production, summarizes the research results of Chengdu Institute of Biology on duckweed, and provides the direction of its further studv.
文摘The World Heritage Committee of UNESCO has called for a strategic commitment from its States Parties to strengthen links between heritage conservation and sustainable development. Fulfilment of this commitment will require integration of the conservation of sites with the sustainable use and management of natural resources in a larger area beyond the boundaries of sites. Identification and demarcation of areas for conserving World Heritage sites and sustainable development of broader regions must derive from an in-depth knowledge of people-environment relationships. The management of Angkor-an iconic World Heritage site -has been primarily focused on conservation and restoration of monuments within the boundaries of the site. However, that focus is now shifting towards addressing environmental, social and economic challenges for sustainable development of the broader landscape described in this paper as the Angkor ecosystem. Angkor has the potential to demonstrate the application of an ecosystem approach to sustainable development--advocated under the UN Convention on Biological Diversity. The site could be a laboratory for new research on cultural ecosystem services as a tool for bridging site conservation to the sustainable development of the Siem Reap province where the site is located.
文摘Different positions of the member states of the World Trade Organization (WTO), especially the developed and developing countries and also the United States of America (USA), the European Union (EU), and Japan representatives, were observed during the Doha Round of trade negotiations under the WTO. The problems of agriculture protection in the developed countries, for example in the EU and USA and also in the developing countries, were becoming serious obstacles during the negotiations. Despite the undeniable benefits of the multilateral WTO forum for trade liberalization, the rapid increase of North-South bilateral and multilateral free trade areas (FTAs) begs a systematic explanation for why some forums are prioritized relative to others. The main aim of the article is the presentation of some new aspects of the international business theory in the context of international economy. The article presents the mercantilist tendencies in the international trade policy, the theory of public choice in the foreign trade policy, protectionist pressures in different political systems, the level of protectionist pressures, food producers' pressure, and conflicts between the tendencies to sustainable international trade liberalization and environmental protection.