This paper expounds on the meaning of migration and the status quo of studies at home and abroad on migration and ecological migration. It focuses on the discussion of the necessity of ecological migration in Xinjiang...This paper expounds on the meaning of migration and the status quo of studies at home and abroad on migration and ecological migration. It focuses on the discussion of the necessity of ecological migration in Xinjiang, and the problems faced by the ecological emigrants, such as the lack of water, the serious land salination and basification, sand storms, and the adaptation to the environment. Besides, it probes into the problems existing in the ecological migration, including the unscientific design of the moving project, the defects of the reclamation work, and the irrational treatment of the relation between ecological migration and regional development. Based on this, we put forward some suggestions about and countermeasures against those problems.展开更多
The Tonle Sap Lake is home to three types of communities： land-based, water-based and land-water based communities, whose livelihoods are dependent on Lake＇s resources. This paper examines how fishing communities in...The Tonle Sap Lake is home to three types of communities： land-based, water-based and land-water based communities, whose livelihoods are dependent on Lake＇s resources. This paper examines how fishing communities in the Tonic Sap Lake make their living in the context of declined resources, increased competition between fishers, the resources politics and the increased trades around the Lake. The paper concludes that in the old day, communities around the lake were related to one another through bartering rice and fish. However, at present, as resources declining, these communities compete over resources, and in doing so, they build relationship and connection with powerful elites including officials, fish traders and the fishing operators, who could protect them in fishing. As a consequence, fishers are trapped in the webs of vicious cycle of poverty, conflicts, corruption and patronage system and exploited and sucked in these webs.展开更多
Xainza County on the Qiangtang Plateau（QP） spans a transitionally climatic and eco-environmental zone and is therefore a very sensitive region.Glaciers in this area are one of the most important kinds of land cover ...Xainza County on the Qiangtang Plateau（QP） spans a transitionally climatic and eco-environmental zone and is therefore a very sensitive region.Glaciers in this area are one of the most important kinds of land cover as well as key water resources,yet our understanding of their current status and spatio-temporal change remains limited.Using Landsat images,this study investigated the current distribution of glaciers（2015） in the Xainza Xiegang Mountains as well as the spatio-temporal changes that took place over six time periods between 1976 and 2015.Results show that,in 2015,131 glaciers covered a total area of 74.59 ± 5.25 km^2,mainly located between 5,600 and 6,000 m above sea level（a.s.l）.Between 1976 and 2015,the total number of glaciers increased by 12,while their areas decreased by 24.98%（24.83 km^2）.Glacial retreat has induced a loss of water resources of 11.77 × 10~8 m^3 over the last 39 years,while spatial heterogeneities in glacial changes across various sub-basins,aspects,and altitudinal zones are also clearly observed.Climate warming is the key factor driving this continuous glacial retreat;the high-quality dataset presented in this paper for the Xainza Xiegang study area is crucial for the ongoing assessment of climatic and eco-environmental changes.展开更多
文摘This paper expounds on the meaning of migration and the status quo of studies at home and abroad on migration and ecological migration. It focuses on the discussion of the necessity of ecological migration in Xinjiang, and the problems faced by the ecological emigrants, such as the lack of water, the serious land salination and basification, sand storms, and the adaptation to the environment. Besides, it probes into the problems existing in the ecological migration, including the unscientific design of the moving project, the defects of the reclamation work, and the irrational treatment of the relation between ecological migration and regional development. Based on this, we put forward some suggestions about and countermeasures against those problems.
文摘The Tonle Sap Lake is home to three types of communities： land-based, water-based and land-water based communities, whose livelihoods are dependent on Lake＇s resources. This paper examines how fishing communities in the Tonic Sap Lake make their living in the context of declined resources, increased competition between fishers, the resources politics and the increased trades around the Lake. The paper concludes that in the old day, communities around the lake were related to one another through bartering rice and fish. However, at present, as resources declining, these communities compete over resources, and in doing so, they build relationship and connection with powerful elites including officials, fish traders and the fishing operators, who could protect them in fishing. As a consequence, fishers are trapped in the webs of vicious cycle of poverty, conflicts, corruption and patronage system and exploited and sucked in these webs.
基金National Natural Science Foundation of China(41571104,41101082)the Key Foundation Project of Basic Work of the Ministry of Science and Technology of China(2012FY111400)China Scholarship Council(20140491029)
文摘Xainza County on the Qiangtang Plateau（QP） spans a transitionally climatic and eco-environmental zone and is therefore a very sensitive region.Glaciers in this area are one of the most important kinds of land cover as well as key water resources,yet our understanding of their current status and spatio-temporal change remains limited.Using Landsat images,this study investigated the current distribution of glaciers（2015） in the Xainza Xiegang Mountains as well as the spatio-temporal changes that took place over six time periods between 1976 and 2015.Results show that,in 2015,131 glaciers covered a total area of 74.59 ± 5.25 km^2,mainly located between 5,600 and 6,000 m above sea level（a.s.l）.Between 1976 and 2015,the total number of glaciers increased by 12,while their areas decreased by 24.98%（24.83 km^2）.Glacial retreat has induced a loss of water resources of 11.77 × 10~8 m^3 over the last 39 years,while spatial heterogeneities in glacial changes across various sub-basins,aspects,and altitudinal zones are also clearly observed.Climate warming is the key factor driving this continuous glacial retreat;the high-quality dataset presented in this paper for the Xainza Xiegang study area is crucial for the ongoing assessment of climatic and eco-environmental changes.
