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| Desert grassland ecosystem health evaluation under different fenced enclosure conditions |
Wang Guanqi,Zhang Kebin,Wang Zhishu
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College of Soil and Water Conservation, Beijing Forestry University, Key Lab. of Soil & Water Conservation and Desertification Combating of the Ministry of Education, 100083, Beijing, China
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Abstract In order to quantitatively assess the influence of fenced enclosure on the grassland ecosystem health, this paper took the Liuyangpu enclosure region of Yanchi County, Ningxia, as research area, using ecosystem health index to evaluate desert grassland under different fenced enclosure conditions. The results are as follow. 1) From the perspective of enclosure time, long-time fencing is not conducive to the vegetation recovery. 2) From the viewpoint of stocking pressure, during the early enclosure time, grazing is not beneficial to the recovery of grassland ecosystem health; after certain years, moderate grazing benefits the recovery of grassland ecosystem health. Therefore, in the research of the recovery of desert grassland, it is necessary to adjust the enclosure time and moderate grazing. It may not only obtain certain economic benefits, but also promote the recovery of grassland ecosystem health.
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Received: 30 September 2013
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