Spatiotemporal Evolution of Ecological Quality in Alpine Freshwater Lake Nature Reserves in the Past 20 Years

The Caohai Nature Reserve is one of the three major plateau freshwater lakes in China.Since the 1950s,human activities such as land reclamation and population relocation have greatly damaged Caohai.A rapid evaluation of the spatiotemporal evolution trend of the ecological quality of the Caohai Nature Reserve is significant for the maintenance and construction of the ecosystem in this area.The research is based on the Google Earth Engine(GEE)remote sensing cloud computing platform.Landsat TM/OLI images from May to October in five time periods:2000-2002,2004-2006,2009-2011,2014-2016,and 2019-2021 were obtained to reconstruct the optimal cloud image set by averaging the images in each time period.By constructing four ecological indicators:Greenness(NDVI),Wetness(Wet),Hotness(LST),and Dryness(NDBSI),and using Principal Component Analysis(PCA)method to obtain the Remote Sensing Ecological Index(RSEI)for the corresponding years,the spatiotemporal variation of ecological quality in the Caohai Nature Reserve over 20 years was analyzed.The results indicate:①the mean value of RSEI increased from 0.460 in 2000-2002 to 0.772 in 2019-2021,a 67.83%increase,indicating a significant improvement in the ecological quality of the reserve over the 20 years;②from the perspective of functional zoning of the Caohai Nature Reserve,the ecological quality of the core area showed a degrading trend,while the ecological quality of the buffer zone and experimental zone significantly improved;③with the implementation of ecological restoration projects,the ecological quality of the reserve gradually recovered and improved from 2014 to 2021.The trend of RSEI value changes is well correlated with human interventions,indicating that the PCA-based RSEI model can be effectively used for ecological quality assessment in lake areas.

Application of Near-nature Management Theories in the Construction of Ecological Scenic Forest——With Shenzhen City as a Study Case

With the present unceasing development of science and society,ecological and social functions of forest have attracted more and more attention.This study with Shenzhen City as an example through elaborating the concepts and principles of ecological scenic forest and near-nature management,and combining with the present construction of ecological scenic forest in Shenzhen City,specifically stated the requirements,principles and implementation measures of different aspects involving in the construction of ecological scenic forest in Shenzhen,such as site classification,tree species selection,logging operation,community construction,tending management and benefit monitoring,and further expounded the application of near-nature management theories in this field.It was also stressed that the nature should be utilized and respected,artificial forest should be reformed into near-nature scenic forest with richer and more stable structure as well as higher protective eco-functions,so as to provide theoretical basis for the construction of ecological scenic forest and enhance its positive role in the urban construction of Shenzhen.

The Ecological Landscape with the Integration of Humanistic Culture and Nature Environment —A Case Study of Landscape Transformation in Baoyan Eco-Tourism Garden of Changshu City

Based on the landscape ecology theory,this paper analyzed the ecology concept and the existing misconceptions of landscape design from the perspective of ecology.The misconceptions included the excessive using of ecological concepts,undue emphasis on the natural features of ecology,and endowing landscape with human cultural blindly.Taking Baoyan eco-tourism garden landscape renovation as an example,this study analyzed the superior natural conditions of this garden,the negative status in the current development process which included the conservative development and construction,singleness of entertainment,cultural educational and the other activities,disorder of landscape structure,lack of cultural landscape,weakness of landscape features and the unremarkable competitive advantages.To construct an ecological landscape with integration of humanistic and nature features,this paper proposed "ecological gardens" as the theme,following the design concept which made full integration of creating cultural landscape with the improvement and protection of natural ecological environment.Finally,the author elaborated such kind of ecological landscape from the following 4 aspects,including the integration,protection,restoration,and creation of landscape.

Evaluation on Tourism Ecological Security in Nature Heritage Sites——Case of Kanas Nature Reserve of Xinjiang,China

The nature heritages are the precious legacy of nature with outstanding scientific and aesthetic value. They are quite different from other common ecotourism areas, because of its original and unique system, sensitive and vulnerable landscape, and peripheral cultural features. Therefore, the tourism development in the nature heritage sites should be on the premise of ecological security. The evaluation index system of tourism ecological security in nature heritage sites was constructed in this article by AHP and Delphi methods, including nature ecological security, landscape visual security and local culture ecological security, and the security thresholds of indices were also established. In the indices' weights of the evaluation model, the nature ecological security ranked the highest, followed by tourist landscape visual security and culture ecological security, which reflected the influence degree of the limited factor to tourism ecological security. Then, this paper carried out an empirical study of Kanas of Xinjiang Uygur Autonomous Region, China, which has the potential to be the World Nature Heritage. On the basis of the data attained from survey and observation on the spot, as well as questionnaire answered by tourists and local communities, the ecological security status in Kanas was evaluated. The result showed that the status of Kanas tourism ecological security was better, but there had some limiting factors. Lastly, effective measures were put forward to ensure its ecological security.

Landscape pattern and its effect on ecosystem functions in Seoul Metropolitan area:Urban ecology on distribution of the naturalized plant species

During land transformation process in the human history, naturalized plants were introduced to several land use patterns by the different ways of plant itself. Including some naturalized plants that had been contribute to land restoration, many naturalized plants have been invaded to original habitat or landscape for native plants. Once the plants were colonized, they extend their area and population size. Urban developed areas often give an important role of source habitat for naturalized plants and expanding their population size. In recent, this situation is appearing as one of environmental problems about the urban landscape management controlling the naturalized plants that invaded in the developed area and conserving the native vegetation. This paper is focusing on relationships between distribution of habitat of naturalized plants and landscape patch in urban area in Seoul. Gangdong-Gu, one of the administrative areas in Seoul was selected for this study. We examined the recent land use change using LANDSAT TM data and spreading of the representative naturalized plants (Robinia pseudoacacia and Eupatorium rugosum) by Seoul Biotope Mapping Project and field survey in 1999. As a result, these two species were often occurred in the same habitat and distributed in forest edge disturbed by man. Their distribution patterns were related to landscape indices (patch size and shape) in the forest edge.

Nature, Society and the Spirit: Peter Matthiessen’s Ecological Ideas

Peter Matthiessen is widely regarded as a serious, disciplined author who wrote about wild nature, vanishing cultures, and human society. He was a dedicated naturalist from early on, and the concern for nature informed his work from the beginning of his career. This paper analyses Matthiessen’s major works from the perspective of ecocriticism, revealing his ecological ideas on natural ecology, social ecology and spiritual ecology respectively. For Matthiessen, the modern environmental crisis is inseparable from social and spiritual problems. He criticizes the anthropocentric and imperial points of view, sparing no effort to pursue justice, harmony and wholeness both in his literary imagination and real life.

About the Nature of Ecological Ethics Debates and the Relationship between Human and Nature

There are natural ethical debates in ecological ethics, namely whether nature has intrinsic value, whether the nature has its rights. Theoretical basis of argument is the opposite of anthropocentrism and non- anthropocentrism. Ecological ethics controversy concerns the core issue of the relationship between human and nature of the ecological ethics about nature, to correctly understand and deal with the relationship between mankind and nature, ecological ethics and ecological ethics is the starting point and destination debates.

Ecological Environment Status and Protection Measures of Wetland Nature Reserve

In order to better promote the restoration and sustainable development of the natural ecological environment,it is necessary to study the wetland system as an important part of the ecosystem,put forward some common problems faced by wetland nature reserves,and propose relevant solutions based on the problems.This paper describes the relevant theoretical basis for the ecological environment protection of the wetland nature reserves,the problems faced,and the relevant solutions as reference for relevant personnel.

Harmonization and Unification: Ecological View of Nature in Wordworth's Poem——Taking “Nutting” for Example

William Wordsworth,as the representative poet of the romanticism,plays an important role in the history of the EnglishLiterature and is considered an ecological poet.He pursues the harmonious and unified relationship with man and nature,and con-tributes to the development process of the social.Taking the poem"Nutting"for example,Wordsworth’s ecological view of natureand its reasons,and the realistic significance of his view on nature to the modern world,especially under the background of the ad-vocacy of the community of destiny of human beings,will be explicated and analyzed.

Will Hunting Wildlife Harm the Ecological Balance of Nature?

The Expert Committee of Wild Animal Hunting,an organization under the State Forestry Administration of China,recently approved a group of foreign hunters’applications to shoot wildlife in China. The news has gained much attention across the country. The application was submitted by two domestic travel agencies on behalf of seven foreign hunters,who plan to shoot nine blue sheep and seven Tibetan gazelles in an international hunting ground in west China’s Qinghai Province. Despite the expert committee’s approval,however,the hunters still can’t fire a shot in China until they get an official license from the State Forestry Administration.According to recent news,the administration has declined the application. In China,blue sheep and Tibetan gazelles are ranked as Class 2

Discussion on Action and Potential of Fenlong Megascience in the Symbiosis between Human and Nature

The fourth new farming model Fenlong is identified as megascience for the first time. Fenlong can be directly applied to farming of farmland, remoulding of mortar black soil and saline alkali land and development of degraded grassland. Deep loosening can create huge soil reservoirs, reduce fertilization, promote indi- rectly the improvement of river water fisheries and water sources and the upgrading of shaping and hydropower industry, thus making a new round of mobilization and pooling of natural resources. As a result, the nature is able to produce good food needed by human, the spatial dimension of the land is increased, the natural pre- cipitation storage is increased, the flood and drought disasters are reduced, the eco-environment is improved, and the economic benefits are increased. Fenlong is not restricted to global application by ecological region and crop variety and is not subject to the time-space constraints for a hundred thousand years. On the basis of utilizing the heaven and earth resources, it brings about a huge effect of mega- science. Compare with traditional farming, the depth under the mode of Fenlong is increased by 2-3 times, the contents of nutrient, water, oxygen and microorganism in the soil are increased by 10%-200%, the content of pale salt is increased by 20%-40%, the temperature is increased by 2-4 ~C, and the photosynthetic efficiency of crops is improved by 10%. Under the cultivation mode of Fenlong, the yield of crop applied with no fertilizers is increased by more than 10%, crop yield is still in- creased by more than 5% when the application amount of chemical fertilizer is re- duced by 10%-20%. Under the farming mode of Fenlong combined with no in- crease in fertilization, the crop yield, crop quality, farming efficiency, natural precipi- tation storage and air humidity are increased by 10%-50%, 5%, 15%, 100% and 5%, respectively, and the emissions of methane and other gases are reduced by more than 5%. Even in mortar black soil, saline alkali land and degraded grassland, the yield is still increased by 15%-50%. These improvement effects can last for many years, helping achieve the real harmonious coexistence between human and nature.

Discussion on Planning and Construction of Villages and Towns in Nature Reserve——A Case Study of Weitun Town of Hengshui City in China

The development of nature reserve was closely related with that of villages and towns at its surrounding area.It was the core issue to be discussed in the paper as to how to form mutually beneficial relation between them and achieve both protection of nature reserve and economic development of villages and towns.Through analysis on internal relation between nature reserve and villages and towns,it put forward three methods for planning and construction of villages and towns around the nature reserve.By taking Hengshui Lake National Nature Reserve in Weitun Town for example,it hoped to serve as a modest spur to induce exchange and discussion in the field.

Study on the Epistemology Development of the Correlation between Human Beings and Nature

This study aimed to alert people that the harmony between human beings and nature has already become an urgent problem. All people are responsible for maintaining the harmony, which is the also the inexorable trend of historical development. Reviewing the evolution history of human kind, the relationship between human beings and nature from harmony to imbalance, from imbalance to a new harmony was analyzed from the macro perspective, and it was pointed out that the present society is in the transitional phase from imbalance to a new harmony and also a phase that people are consciously coordinating their relationship with nature. It was found through the study that a harmonious society relies on the harmony between human beings and nature, and the latter is a necessary condition for a real harmonious society, however, people always forget such a principle. The imbalanced relationship between human beings and nature has seriously influenced many aspects of social harmony, and become instable factors in China and international society, even threatened the development and survival of human beings. Thus, all people should make joint efforts in creating win-win conditions for the development between human beings and nature, and ensuring offspring a healthy and green earth.

A Study on the Relationships of Ecological Civilization Construction with Natural Conservation and Sustainable Resources Use

Ecological Civilization Construction and natural conservatiorl and sustain- able resources use are three aspects of same object proposed from various angles of theory and practice. The paper intends to simply deal with some problems of this aspect and to propose corresponding suggestions for related departments.

Ecological water demand of natural vegetation in the lower Tarim River

We have appraised the relationships between soil moisture, groundwater depth, and plant species diversity in the lower reaches of the Tarim River in western China, by analyzing field data from 25 monitoring wells across eight study sites and 25 permanent vegetation survey plots. It is noted that groundwater depth, soil moisture and plant species diversity are closely related. It has been proven that the critical phreatic water depth is five meters in the lower reaches of the Tarim River. We acquired the mean phreatic evaporation of different groundwater levels every month by averaging the two results of phreatic evaporation using the Qunk and Averyanov formulas. Based on different vegetation types and acreage with different groundwater depth, the total ecological water demand （EWD） of natural vegetation in 2005 was 2.4×10^8 m^3 in the lower reaches of the Tarim River. Analyzing the monthly EWD, we found that the EWD in the growth season （from April to September） is 81% of the year＇s total EWD. The EWD in May, June and July was 47% of the year＇s total EWD, which indicates the best time for dispensing artificial water. This research aims at realizing the sustainable development of water resources and provides a scientific basis for water resource management and sound collocation of the Tarim River Basin.

The Thought of the Oneness Between Man and Nature in Walden

From the view of the ecological theory, this paper tries to analyze that Thoreau uses Chinese traditional philosophical thought--- the oneness of man and nature to deal with the relationship of human beings and the nature in Walden.

Evaluation of Natural Ecological Environment in Guangzhou City Based on Remote Sensing Technology and Comprehensive Index Method

Based on the ETM remote sensing images of Guangzhou City in 2014, the spatial distribution results o f three environmental factors including vegetation coverage(NDVI), soil index(vegetation index of bare soil) and sl ope were obtained. By using comprehensive index method, the normalized environmental factors were weighted and superimposed, and the fi nal evaluation results of ecological environment in Guangzhou City were obtained. The results showed that overall situation of natural ecological environment in Guangzhou was not optimistic, that is, the area of land with bad, moderate, good and superior environment accounted for 59.70%, 35.79%, 4.50% and around 0.01% of total area of land in Guangzhou City respectively. Ecological environment was generally poor in the central urban districts in the south of Guangzhou City, while it was relatively better in the north and northeast. Attaching importance to the constr uction of greenbelts and greenways is an effective way to improve regional environmental quality and natural ecological e nvironment level.

Planning and Design of Zhengzhou Forest Park Based on Natural Ecological Experience

Through summarizing and analyzing planning objectives, landscape division and natural ecological experience planning of Zhengzhou Forest Park, the authors discussed the application of human-nature harmony in the planning, stressed citizens' needs for experiencing natural ecological environment, and tried to build Zhengzhou Forest Park with picturesque scenery, complete facilities, and harmonious human-nature coexistence.

Reforming the natural resource auditing system from the ecological civilization perspective

Perfecting the natural resource system and auditing natural resource assets are requirements in protecting natural resources and developing an ecological civilization in practice.While the natural resource asset audit both confirms and quantifies natural resources,the nature of such resources makes it difficult to identify their ownership.Further,these resources'diversity creates complex measurement standards and activities,all of which require relevant institutional guarantees.However,the existing audit system for natural resource assets includes insufficient stock,incremental difficulties,and poor guidance,which cannot meet the requirements for environmental governance and an ecological civilization.Thus,it is necessary to define natural resource assets’rights and measurement systems and responsibility regulations,among others;construct an auditing participation system,technical regulations,and evaluation criterion for natural resource assets;amend the Audit Law in a timely manner;and enact natural resource asset legislation.Ultimately,such efforts would eliminate the bottleneck in the natural resource asset auditing system and facilitate the construction of a resource-saving,environmentally friendly society.