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[G-1.2 Study on Land Use Planning Applying Preventive Technology against Desertification in China]

[Contact Person]

Toshiaki Imagawa
Head of Laboratory of Land Evaluation
Department of Environmental Management
National Institute for Agro-Environmental Sciences
Ministry of Agriculture, Forestry,and Fisheries
3-1-3 Kannondai,Tsukuba,Ibaraki,305-8604 Japan
Tel:+81-298-38-8277 Fax:+81-298-38-8199
E-mail:imagawa@affrc.go.jp

[Total Budget for FY1998-FY2000]

67,251,000 Yen (FY2000;  20,133,000 Yen)

[Abstract]

　The purpose of this study is to develop a land use planning applying preventive technology in desertified areas of China for sustainable land use. In Horqin grassland of Inner Mongolia as a wind erosion area, we clarified the effectiveness of prevention technology for desertification on the soil properties or vegetation. Horqin Grassland was divided into five parts based on topography, soil, vegetation and desertification processes. It is possible to reduce pasture pressure with no decrease in total livestock farming through introducing and enlarging domestic livestock raising. In Sichuan and Yunnan Province as a water erosion area, we clarified that massive deforestation in the 1950's for fuel wood supply and afforestation in the 1970's. The calculated total soil losses in 1965 and 1995 were 1.7x10² t/ha and 5.1x10 t/ha, respectively. These values showed that reforestation had been effective. In bio-resources utilization nitrogen input mainly consisting of chemical fertilizer exceeds nitrogen output.

[Key Words]

China,   Desertification,   Farm Management,   Land Use Planning,   Preventive Technology