摘要
在RS和GIS技术支持下结合GIS软件中的景观分析软件FRAGSTAT3.2,分析1985年以来黑河流域景观格局的动态变化和景观占补平衡,同时采用景观重心模型计算黑河流域景观类型的重心偏移,分析景观动态变化及其特征.结果表明:景观重心分布,从流域上游到流域下游,依次为林地、水域、耕地、居工地、草地、未利用土地;生命支持能力较强景观和生命支持能力脆弱景观集中分布于黑河流域的上游和下游地区;流域景观分布呈现明显的地带性规律;在自然和人类活动影响下,1985～2000年间,黑河流域生态状况呈现出"局部有所改善,整体仍在恶化"的发展态势.
With the support of the RS and GIS techniques, the dynamic variation of landscape patterns and their balance in occupancy and supplement in the Heihe River Basin since 1985 were analyzed by use of the landscape analysis software FRAGSTAT3.2, and the offset of the center of gravity for different kinds of landscape was calculated. The results show that centers of gravity of landscape are in the sequence of wooded lands, water areas, croplands, habitation and building sites, grasslands, and unused lands from the upstream to the downstream of the river basin, with the landscapes of strong and vulnerable life sustaining powers mainly concentrating in the areas on the upper and lower Heihe River Basin, and that the landscape distribution in the river basin demonstrates an obvious regularity of zonality. Under the influence of nature and human activities, the ecological environment shows a variation trend of ' the part is improved, while the whole is deteriorated.' from 1985 to 2000.
出处
《河海大学学报（自然科学版）》
CAS
CSCD
北大核心
2005年第1期6-10,共5页
Journal of Hohai University(Natural Sciences)
基金
国家"十五"重点科技攻关项目(2001BA610A 02)
关键词
黑河流域
景观动态
占补平衡
Heihe River Basin
state of landscape
occupancy and supplement balance
