As an important measure of eco-environmental construction, the process ofde-farming in slope farmland is being undertakengradually in the whole China. Meanwhile, theproblem of reducing in food yield in de-farming area...As an important measure of eco-environmental construction, the process ofde-farming in slope farmland is being undertakengradually in the whole China. Meanwhile, theproblem of reducing in food yield in de-farming areas can not be neglected any more. It is especially the case in areas with concentrated slope farmland andinconvenient transportation. In this paper, we analyze the causes of hidden troubles in food security, and the spatial relationship between farmland and slopefarmland in the reservoir area of Three Gorges, and unveil the spatial disparity of contradictions between food supply and demand. Finally, combining the accessibility of areas, three different spatial types offood security, food security area, food alert area, and food crisis area, are divided.展开更多
To speed up the regional development in cen- tral and western China is a strategic decision made by the Chinese government at the turn of the century. For CAS research professionals, ac- tive participation into the ca...To speed up the regional development in cen- tral and western China is a strategic decision made by the Chinese government at the turn of the century. For CAS research professionals, ac- tive participation into the campaign is a solemn his- toric commitment and a major task of the CAS-piloted national Knowledge Innovation Program. In early 2000, the CAS leadership formulated an Action Plan for Western China Development and initiated a re- search program aiming at the environmental evolution, ecological restoration and the sustainable exploita- tion of the local resources in the region. The Program is composed of seven key projects, namely, studies on western China’s environmental evolution laws, and sustainable utilization of its wa- ter-and-soil resources; an experimental demonstration of the comprehensive management of the ecology and environment in Hunshandak Sands and the transitional belts between farming and pastoral areas at the north- ern fringe of Beijing; an experimental demonstration of water-and-soil preservation and ecological resto- ration on the Loess Plateau; an experimental demon- stration of comprehensive management of the water resources, ecosystems and local economies in the Heihe River Valley; an experimental demonstration of the rehabilitation and rebuilding of the typically de- pleted ecosystems in the upper reaches of Minjiang River Valley; an experimental demonstration of the control of desertification and ecosystem management of oases in the lower reaches of Tarim River; and re- search and development of new drugs with indepen- dent intellectual properties.展开更多
基金the Knowledge-Innovation Project of Institute of Geographical Science and Natural Resources Research of the Chinese Academy of Science(No.CXIOG-Boo-04)for financial support.
文摘As an important measure of eco-environmental construction, the process ofde-farming in slope farmland is being undertakengradually in the whole China. Meanwhile, theproblem of reducing in food yield in de-farming areas can not be neglected any more. It is especially the case in areas with concentrated slope farmland andinconvenient transportation. In this paper, we analyze the causes of hidden troubles in food security, and the spatial relationship between farmland and slopefarmland in the reservoir area of Three Gorges, and unveil the spatial disparity of contradictions between food supply and demand. Finally, combining the accessibility of areas, three different spatial types offood security, food security area, food alert area, and food crisis area, are divided.
文摘To speed up the regional development in cen- tral and western China is a strategic decision made by the Chinese government at the turn of the century. For CAS research professionals, ac- tive participation into the campaign is a solemn his- toric commitment and a major task of the CAS-piloted national Knowledge Innovation Program. In early 2000, the CAS leadership formulated an Action Plan for Western China Development and initiated a re- search program aiming at the environmental evolution, ecological restoration and the sustainable exploita- tion of the local resources in the region. The Program is composed of seven key projects, namely, studies on western China’s environmental evolution laws, and sustainable utilization of its wa- ter-and-soil resources; an experimental demonstration of the comprehensive management of the ecology and environment in Hunshandak Sands and the transitional belts between farming and pastoral areas at the north- ern fringe of Beijing; an experimental demonstration of water-and-soil preservation and ecological resto- ration on the Loess Plateau; an experimental demon- stration of comprehensive management of the water resources, ecosystems and local economies in the Heihe River Valley; an experimental demonstration of the rehabilitation and rebuilding of the typically de- pleted ecosystems in the upper reaches of Minjiang River Valley; an experimental demonstration of the control of desertification and ecosystem management of oases in the lower reaches of Tarim River; and re- search and development of new drugs with indepen- dent intellectual properties.
