Evaluation of Ecological Functions in Returning Farmland to Afforestation Project Area in Datong County of Qinghai Province

LI Shi-rong; LI Wen-zhong; LI Fu-yuan; ZHAO Wan-qi; ZHOU Xin-cheng

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Evaluation of Ecological Functions in Returning Farmland to Afforestation Project Area in Datong County of Qinghai Province

- Evaluation of Ecological Functions in Returning Farmland to Afforestation Project Area in Datong County of Qinghai Province
- Bulletin of Soiland Water Conservation Vol. 25, Issue 2, Pages: 65-68(2006)
- 作者机构：
  
  1. 北京林业大学水土保持学院,北京,100083
  2. 青海大通县林业旅游局,青海大通,810100
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2006
- 稿件说明：
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LI Shi-rong, LI Wen-zhong, LI Fu-yuan, et al. Evaluation of Ecological Functions in Returning Farmland to Afforestation Project Area in Datong County of Qinghai Province[J]. Bulletin of Soiland Water Conservation, 2006, 25(2): 65-68.
DOI：

LI Shi-rong, LI Wen-zhong, LI Fu-yuan, et al. Evaluation of Ecological Functions in Returning Farmland to Afforestation Project Area in Datong County of Qinghai Province[J]. Bulletin of Soiland Water Conservation, 2006, 25(2): 65-68. DOI：

摘要

根据生态经济学原理

采用层次分析法(AHP)

建立了黄河上游退耕还林还草综合生态效益评价指标体系和数学模型.以青海大通县为例

对天然云杉林、退耕林地、天然荒草地、天然灌丛等植被类型进行综合生态效益评价

与农田生态系统进行对比研究.评价结果表明:天然云杉林、退耕林地、天然灌丛等类型的生态效益指数均大于农田生态系统

其综合生态效益指数排列顺序为

天然云杉林>退耕林地>天然灌丛>农地>天然荒草地.这一研究结果可为黄河上游退耕还林生态工程建设提供参考.

Abstract

On the basis of the theory of eco-economics and by the applying analy tic hierarchy process(AHP)

an evaluation index system and an evaluation model for compreneasive ecological benefits of the returning farmland to afforestation in the upper reaches of the Yellow River are proposed.A case study was carried out in Datong County

Qinghai Province

for comprehensive ecological benefits of the returning farmland to af forestation in the vegetationtypes of nature spruce forests

reuse farmland for woodland

natural wasteland and natural shrub in comparisonwith the agro-ecosystems.Results show that ecological benefit indexes of all the vegetation types

such as naturalspruce forests

reuse farmland for woodland

natural wasteland and natural shrub

are higher than that of theagro-ecosystem.The comprehensive ecological benefit indexes are in an order of natural spruce forests > reuse farmlandfor woodland > natural shrub > farmland > natural wasteland.The study results can be referred for the ecologicalregeneration project of the returning farmland to afforestation in the upper reaches of the Yellow River.

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