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[G-1.6 Evaluation of indicators for the monitoring and assessment of desertification in China]

[Contact Person]

Kazuo Tobe
Senior Researcher
Environmental Biology Division
National Institute for Environmental Studies
Ministry of the Environment
16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan
Tel: +81-298-50-2486 Fax: +81-298-50-2586
E-mail: tobe@nies.go.jp

[Total Budget for FY2000]

1,800,000 Yen (FY2000; 1,800,000 Yen)

[Abstract]

　The objectives of this study are to evaluate the reliability of vegetation indicators of Leymus chinensis grassland, a typical grazingland in Inner Mongolia of China. Extensive literature reviews and field investigations were carried out. Results show that the degree of desertification of Leymus chinensis grassland can be divided into 4 stages: non-, slight, medium, and serious. As the development of desertification, biomass, quality of grassland, and other parameters changed greatly. The results showed that the desertification causes a significant change on the grazingland, which is mainly due to the change of dominant plant species. Therefore, variation of dominant plant species can be applied as indictors for determining the degree of grazingland desertification. The advantages of this indicator are sensitive, simple, and direct applicable.

[Key Words]

Assessment indicator, China, Desertification, Grasslands, Leymus chinensis