期刊论文

Evaluation on Spatial Accessibility of Ecological Circulation of Landscape ——A Case of Jingzhou City

中文

河南科学

1004-3918

2014

8

1654-1658

10.13537/j.issn.1004-3918.2014.08.060

国家自然科学基金项目（71103073）； 国家水体污染控制与治理科技重大专项（2013ZX07105-005-04-02）；

本校为第一机构

生态流在地理空间中顺畅地运行是健康生态系统评价的重要标准,也是构建景观生态安全格局的基本前提.以荆州第二次土地利用调查数据为基础,遴选长江干流（荆州段）、洪湖湿地自然保护区、长湖湿地自然保护区、洈水森林公园、黄山头森林公园、八岭山森林公园作为生态"源",参考生态价值密度确定各类景观单元的阻力值,并利用最小耗费距离模型对景观生态流的空间通达性进行评价.研究显示,荆州景观空间通达性总体呈现出明显的"西难、东易、中间总体偏难"的基本格局.其中,市域西缘阻力最高,景观生态过程受限非常严重;中部长江干流东西两侧阻力偏高,生态过程受限严重;市域东缘阻力最低,生态过程受限较小...

Selecting six landscape units in Jingzhou as ecological sources to determine the resistance value of each landscape unit, the resistance surface was established based on minimum cost distance model. GIS platform was used to get the minimum cost distance and its path of the six sources. Taking a small superposition to form total minimum cost resistance of surface landscape patterns for Jingzhou. The landscape ecological processes in Jingzhou showing a clear pattern that ＂the west is difficult, the east is easy, the middle part is overall somewh...