| 基于ALOS影像的黄土丘陵区典型流域景观空间格局 |
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| 作者姓名： | Mai KL Zhang WH |
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| 作者单位： | 西北农林科技大学西部环境与生态教育部重点实验室,陕西,杨凌,712100 |
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| 基金项目： | 国家"十一五"科技支撑计划项目,中国科学院两部行动计划项目 |
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| 摘 要： | 基于ALOS卫星的中、高分辨率遥感影像,解译出与燕沟流域(燕沟流域是黄土丘陵沟壑区的典型小流域)生态恢复、农业生产、生活密切相关的7种景观类型,利用景观多样性和景观异质性两类指数分析了2007年燕沟流域景观格局和景观功能,并结合数字高程模型(DEM)数据,对燕沟流域整体和局部的土地景观格局合理性进行评价.结果表明:燕沟流域的主导景观类型为灌丛和林地,且主要分布在大于25°的坡面上;研究区景观斑块分维数为1.09,景观空间格局稳定;生态防护、生产经济和生活服务型景观的面积比例约为23∶9∶1;燕沟流域的相对合理度为0.76,景观整体布局较合理,但半阴坡、海拔900 m以下区域的土地利用合理度较低,其合理度分别为0.74和0.02.
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| 关 键 词： | 黄土丘陵区 小流域 ALOS影像 数字高程模型 土地利用合理度 景观功能 |
Landscape spatial pattern of typical loess hilly-gully watershed based on ALOS imagery |
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| Mai KL,Zhang WH.Landscape spatial pattern of typical loess hilly-gully watershed based on ALOS imagery[J].Chinese Journal of Applied Ecology,2011,22(3):741-747. |
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| Authors: | Mai Kai-le Zhang Wen-hui |
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| Institution: | MAI Kai-le,ZHANG Wen-hui(Ministry of Education Key Laboratory of Environment and Ecology in Western China,Northwest A & F University,Yangling 712100,Shaanxi,China) |
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| Abstract: | Based on the ALOS satellite medium and high resolution images,seven landscape types closely related to the ecosystem restoration,farming,and living of Yan'gou watershed,a typical watershed in loess hilly-gully region,were interpreted.The landscape pattern and function of the watershed in 2007 were analyzed with the landscape indices of diversity and heterogeneity,and the landscape distribution suitability of the whole and parts of the watershed were evaluated,combined with the digital elevation model(DEM) d... |
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| Keywords: | loess hilly-gully region small watershed ALOS imagery digital elevation model land-use suitability landscape function |
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