泥河沟流域农林复合生态系统景观格局变化研究  

Landscape Pattern Variation of Agro-forestry Ecosystem in Nihegou Watershed

作　　者：张博[1] 吴发启[1] 张正华 

机构地区：[1]西北农林科技大学资源环境学院 [2]山东省东营市水利局,山东东营257091

出　　处：《西北林学院学报》2006年第6期5-8,共4页Journal of Northwest Forestry University

基　　金：中国科学院知识创新项目"农果复合型生态农业建设模式示范-2"(KZCX1-06-02-03)

摘　　要：以淳化县泥河沟流域为研究对象,利用该区1986年和2004年的土地利用现状图,在A rc/in fo和A rcveiw软件支持下,对该流域18 a来农林复合生态系统景观格局的变化进行了研究。结果表明,除水域不变外,林地、草地和未利用地面积均减少,其他用地面积有所增加,尤其是居民地企业及交通用地增幅最大,达47.48%;流域的斑块数量减少,斑块形状趋于复杂,多样性指数增加,景观的破碎程度加大,景观格局正朝多极化和破碎化方向发展。Based on the land use map of 1986 and 2004, changes of the agro-forestry ecosystem landscape pattern in Nihegou watershed during the eighteen years were studied by Arcview and Arc/info software in the paper. The results showed that all other kinds of patches except water area changed obviously in area, number ,figure etc. The areas of forest land, grassland and non-using land decreased, however, areas of all others increased, especially the residential land and road area increasd by 47.48%. During 18 years, the total number of patches decreased slightly, the shape of patches became more complex. Both diversity index and fragment index increased. The analysis indicated that the landscape pattern of agro-forestry ecosystem in this region was tending towards multipolar and fragmenting development.

关 键 词：泥河沟流域 农林复合生态系统 景观格局 斑块 

分 类 号：S727.22[农业科学—林木遗传育种]