[Objective] The study aimed to explore the degradation law and trend of artificial grassland. [Method] Taking the ryegrass (Lolium perenne) - white clover ( Trifolium repens) artificial grassland in Maiping Townsh...[Objective] The study aimed to explore the degradation law and trend of artificial grassland. [Method] Taking the ryegrass (Lolium perenne) - white clover ( Trifolium repens) artificial grassland in Maiping Township, Guizhou Province as the research object, the grassland vegetation of 40 quadrate from different areas (area around the sheep shed, hilltop, hillside, flatland at the foot of the hill) were analyzed by comparing the dominance and richness index. [ Result] Degradation of different degrees appeared in various areas of this artificial grassland. To be specific, the degradation of grassland around the sheep shed was not serious for less consumption by the sheep; however, the areas on the hilltop and hillside degenerated to the grassland types of dallis grass ( Paspalum dilatatum Poir. ) -Indian lovegrass ( Eragrostis pilosa) and dallis grass - cogongrass [ Imperata cylindrica ( Linn. ) Beauv. ], respectively, and the area at the foot of the hill degenerated to the grassland type dominated by garland chrysanthetnum ( Chrysanthemum coronarium L. ) and knotgrass ( Paspalum distichum L. ). [ Conclusion ] This study provided a basis for grassland improvement as well as the efficient and sustainable utilization of grazing-type artificial grassland in South China.展开更多
China hopes the European Union will recognize China's full market economy status (MES) as soon as possible, Chinese Foreign Ministry spokesman Qin Gang said.
The research of the Russian issue in academic level has a great importance. The Putin-term Russian economy is inadvance, and it reminds of the great economy of the old Soviet Union. For that reason, Putin was given th...The research of the Russian issue in academic level has a great importance. The Putin-term Russian economy is inadvance, and it reminds of the great economy of the old Soviet Union. For that reason, Putin was given the nicknameof the new Russian Tsar. Putin is well-liked by the Russian citizens; as a person he is liked by a vast majority of theRussian population. Putin is indepted his great personality both to the successes achived from the Chechen War andto the numerous successes he has achieved in the economic stabilization since he undertook the management of Rsia. It is true that today Russia has no enough political and economical power to maintain the bipolar world as Ria has an economy of smaller than the one-tenth of the US economy. Nonetheless, Russia is still the secondsuper power of the world as she has nuclear weapons and more than 20 satellites in the space. Russia, today, is aself-sufficient country in having the technology of launching her own satellites, and the very first inventors of therocket technology are Russians. Today, Turkey has a lot to learn from Russia. Putin has been able to attract foreigncapital. The removal of the bureaucratic obstacles affecting the foreigners can be an example to this. Today, Turkeychooses the way of selling of the lands to attract the foreign capital. I think the selling of the lands is not a sensiblepolicy to attract foreign capital, and if the Russian model is adopted more efficient results can be obtained.展开更多
Underground building with such major functions as underground traffic, commerce, culture and recreation, especially the multifunctional underground large-scale public complex, has become a significant part of the over...Underground building with such major functions as underground traffic, commerce, culture and recreation, especially the multifunctional underground large-scale public complex, has become a significant part of the overaU functional structure or even the core of a city. Therefore, the expression of the architectural appearance, and characters of underground building, as well as the integration between the building and its external environment constitute an important part in improving overall functional structure and optimizing cityscape. From the perspective of space and environment shaping, the author explores the architectural appearance, and characters of underground building and its external environment, provides several basic design patterns with further discussion.展开更多
Self-localization is one of the most important aspects for using mobile robots in unstructured environments. In this paper, the authors introduce a new approach for a self-localization and navigation unit for mobile p...Self-localization is one of the most important aspects for using mobile robots in unstructured environments. In this paper, the authors introduce a new approach for a self-localization and navigation unit for mobile platforms in extraterrestrial environments, based on the authors" successful results in self-localization of forestry machines on earth. The presented approach is developed from a highly modular concept, which allows a simple but efficient adaption to specific applications by just substituting some scenario dependent components. In this paper, the authors will explain the general concept and the terrestrial implementation so far. On this basis, the authors will demonstrate and discuss the necessary adaptions to the general concept in order to handle the different conditions on extraterrestrial surfaces.展开更多
In the relationship between humans and the environment,all human activities depend on the geographical environment,which serves as the spatial place and material foundation for human life.This study provides a persp...In the relationship between humans and the environment,all human activities depend on the geographical environment,which serves as the spatial place and material foundation for human life.This study provides a perspective on the human-environment relationship,using a case study of the Dashanbao Mountainous Outdoor Tourism Planning Area in Zhaotong,Yunnan.This study employed methods such as literature review,on-site investigation,and GIS spatial analysis to analyze the functional characteristics of the regional subject,spatial structuring,and spatiotemporally variable ordered processes of Dashanbao as a tourism destination from the perspective of human-environment relationships.The results indicate that under the guidance of the human-environment relationship system philosophy,the construction path of the“ecological space,production space,and living space”includes three main aspects:(1)The formation of five major project blocks and five functional zones to meet the diverse needs of different groups;(2)The establishment of a"multi-core module"structure optimizing the spatial layout of the tourism destination;and(3)With the changes in space and time,the convergence of elements in each block can form a composite mountainous outdoor tourism space with the characteristics of“ecology,life,and production”.The results of this study provide a scientific basis for promoting the sustainable development of tourism regional systems with mountainous characteristics.展开更多
基金Supported by National Key Technology R & D Program(2006BAD16B07) Fund of Science and Technology in Guizhou Province ([2008]2074)~~
文摘[Objective] The study aimed to explore the degradation law and trend of artificial grassland. [Method] Taking the ryegrass (Lolium perenne) - white clover ( Trifolium repens) artificial grassland in Maiping Township, Guizhou Province as the research object, the grassland vegetation of 40 quadrate from different areas (area around the sheep shed, hilltop, hillside, flatland at the foot of the hill) were analyzed by comparing the dominance and richness index. [ Result] Degradation of different degrees appeared in various areas of this artificial grassland. To be specific, the degradation of grassland around the sheep shed was not serious for less consumption by the sheep; however, the areas on the hilltop and hillside degenerated to the grassland types of dallis grass ( Paspalum dilatatum Poir. ) -Indian lovegrass ( Eragrostis pilosa) and dallis grass - cogongrass [ Imperata cylindrica ( Linn. ) Beauv. ], respectively, and the area at the foot of the hill degenerated to the grassland type dominated by garland chrysanthetnum ( Chrysanthemum coronarium L. ) and knotgrass ( Paspalum distichum L. ). [ Conclusion ] This study provided a basis for grassland improvement as well as the efficient and sustainable utilization of grazing-type artificial grassland in South China.
文摘China hopes the European Union will recognize China's full market economy status (MES) as soon as possible, Chinese Foreign Ministry spokesman Qin Gang said.
文摘The research of the Russian issue in academic level has a great importance. The Putin-term Russian economy is inadvance, and it reminds of the great economy of the old Soviet Union. For that reason, Putin was given the nicknameof the new Russian Tsar. Putin is well-liked by the Russian citizens; as a person he is liked by a vast majority of theRussian population. Putin is indepted his great personality both to the successes achived from the Chechen War andto the numerous successes he has achieved in the economic stabilization since he undertook the management of Rsia. It is true that today Russia has no enough political and economical power to maintain the bipolar world as Ria has an economy of smaller than the one-tenth of the US economy. Nonetheless, Russia is still the secondsuper power of the world as she has nuclear weapons and more than 20 satellites in the space. Russia, today, is aself-sufficient country in having the technology of launching her own satellites, and the very first inventors of therocket technology are Russians. Today, Turkey has a lot to learn from Russia. Putin has been able to attract foreigncapital. The removal of the bureaucratic obstacles affecting the foreigners can be an example to this. Today, Turkeychooses the way of selling of the lands to attract the foreign capital. I think the selling of the lands is not a sensiblepolicy to attract foreign capital, and if the Russian model is adopted more efficient results can be obtained.
文摘Underground building with such major functions as underground traffic, commerce, culture and recreation, especially the multifunctional underground large-scale public complex, has become a significant part of the overaU functional structure or even the core of a city. Therefore, the expression of the architectural appearance, and characters of underground building, as well as the integration between the building and its external environment constitute an important part in improving overall functional structure and optimizing cityscape. From the perspective of space and environment shaping, the author explores the architectural appearance, and characters of underground building and its external environment, provides several basic design patterns with further discussion.
文摘Self-localization is one of the most important aspects for using mobile robots in unstructured environments. In this paper, the authors introduce a new approach for a self-localization and navigation unit for mobile platforms in extraterrestrial environments, based on the authors" successful results in self-localization of forestry machines on earth. The presented approach is developed from a highly modular concept, which allows a simple but efficient adaption to specific applications by just substituting some scenario dependent components. In this paper, the authors will explain the general concept and the terrestrial implementation so far. On this basis, the authors will demonstrate and discuss the necessary adaptions to the general concept in order to handle the different conditions on extraterrestrial surfaces.
基金The Sichuan Provincial Key Research Base of Philosophy and Social Sciences(WRF202401)The Key Research Base of Sichuan Provincial Department of Education Humanities and Social Science(XXTYCY2023C17)The Sichuan Provincial Key Research Base for Humanities and Social Sciences in Higher Education(HWYD2024B10)。
文摘In the relationship between humans and the environment,all human activities depend on the geographical environment,which serves as the spatial place and material foundation for human life.This study provides a perspective on the human-environment relationship,using a case study of the Dashanbao Mountainous Outdoor Tourism Planning Area in Zhaotong,Yunnan.This study employed methods such as literature review,on-site investigation,and GIS spatial analysis to analyze the functional characteristics of the regional subject,spatial structuring,and spatiotemporally variable ordered processes of Dashanbao as a tourism destination from the perspective of human-environment relationships.The results indicate that under the guidance of the human-environment relationship system philosophy,the construction path of the“ecological space,production space,and living space”includes three main aspects:(1)The formation of five major project blocks and five functional zones to meet the diverse needs of different groups;(2)The establishment of a"multi-core module"structure optimizing the spatial layout of the tourism destination;and(3)With the changes in space and time,the convergence of elements in each block can form a composite mountainous outdoor tourism space with the characteristics of“ecology,life,and production”.The results of this study provide a scientific basis for promoting the sustainable development of tourism regional systems with mountainous characteristics.