退耕政策下小流域景观格局变化研究  

Landscape pattern changes in small watershed on the basis of policies of land withdrawing from cultivation

作　　者：董有福[1] 赵永华[2] 全志杰[3] 

机构地区：[1]南京工业大学土木工程学院,南京210009 [2]中国科学院沈阳应用生态研究所树木园,沈阳110016 [3]西北农林科技大学林学院,杨凌712100

出　　处：《生态学杂志》2004年第6期29-32,共4页Chinese Journal of Ecology

基　　金：中国科学院知识创新工程重大资助项目 (KZCX1-0 6-0 1)

摘　　要：在景观生态学理论指导下 ,对陕北纸坊沟流域 2 0世纪末景观变化进行了综合分析。研究表明 ,该流域在退耕还林还草政策的影响下 ,形成了以草地和林地为主体的景观格局 ,景观结构趋于简化 ,斑块复杂性和景观异质性程度降低 ,景观要素的空间联系得以加强 ,总体生态环境明显改善。Landscape pattern changes of Zhifanggou watershed during the late 20 th century in North Shaanxi Province were studied.The results showed that grassland and forest were the main landscape tgres in the watershed,because of the policies of land withdrawing from cultivation.The landscape structure tended to be simplified,and the complexity of landscape were reduced,and spatial relationships among landscape elements were intensified.The whole ecological environment has been greatly improved.

关 键 词：景观格局 地理信息系统 生态环境 退耕还林 纸坊沟 

分 类 号：Q149[生物学—生态学]