[1]ZHANG Ning,TIAN Meirong,GAO Jixi,et al.Studies on Diagnosis of Ecosystem Health Nearly 35 Years in Horqin Sandy land—A Case Study in Balinyouqi[J].Research of Soil and Water Conservation,2016,23(04):206-211.
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Studies on Diagnosis of Ecosystem Health Nearly 35 Years in Horqin Sandy land—A Case Study in Balinyouqi
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
23
Number of periods:
2016 04
Page number:
206-211
Column:
Public date:
2016-04-28
- Title:
- Studies on Diagnosis of Ecosystem Health Nearly 35 Years in Horqin Sandy land—A Case Study in Balinyouqi
- Keywords:
- Horqin Sandy Land; ecosystem health; entropy weight method
- CLC:
- X171.1
- DOI:
- -
- Abstract:
- The health condition of arid sandy ecosystem determines not only the size of the ecological services they provide, but also the level of regional ecological security. Therefore, carrying out ecosystem health diagnosis is of great importance to the background value of ecosystem and to the increase of ecological restoration efficiency. We took Balinyouqi of Horqin Sandy Land as research site, used PSR model to construct the index system of ecosystem health diagnosis, and determine the ecosystem health index and overall health condition of the study area with the combination of entropy method and comprehensive evaluation method. And we also diagnosed the ecosystem health of the study area at different levels. The results show that the coverage rate of the enclosed grassland area in the selected index reaches to a maximum (0.065 5), indicating that the area of enclosed pasture is the main indicator influencing the health of sandy ecosystem. It also finds that in the recent 35 years, the ecological system of Horqin Sandy Land has been in the sub-healthy state for 32 years and was in unhealthy state in 1982, 2009 and 2010, which results from that the ecosystem health and state indexes are positively correlated. Human activities can assist the recovery of ecosystem health while excessive interference of ecosystem structure will affect the ecosystem health.
- References:
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