Diagnosis and Analysis on Ecological Degradation of Hunshandake Desertification Control Function Area
Diagnosis of ecological degradation is the basis and the precondition of ecological restoration. In order to improve the ecological restoration efficiency of Hunshandake area, the vigor-organization-resilience model was adopted to establish an index system for quantitatively analyzing the temporal and spatial pattern of ecological degradation degree between 2000 and 2010. Results indicate that the severe degraded area has been increased by30 701 km2 and moderately degraded has been reduced by 35 418 km2, mainly concentrated in Sonid Right Banner, Sonid Left Banner, Plain Blue Banner and Duolun County. Lightly degraded, critical and steady state have been increased by 1 885 km2, 2 826 km2 and 5. 82 km2, mainly distributed in Manchu Autonomous County of Fengning, Guyuan County and Zhangbei County. The ecological environment quality of other county was mainly moderate degradation, and no significant change occurred. Control the scale of construction land, optimize the development of the layout, improve the way of land use, reduce grassland grazing pressure and carry out a reasonable ecological construction are important ways to enhance the ecological function of Hunshandake area.
windbreak and sand-fixationecological degradationchange of time and spacediagnosis
NETL
NSTL
万方数据
维普
