黄土丘陵沟壑区不同地貌类型土地利用景观格局
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国家自然科学基金项目“黄土高原植被恢复对土壤有机碳影响机理及其储量估算研究”(30872073)


Landscape Patterns of Land Utilization Under Different Geomorphologic Types in Loess Hilly-gully Region
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    摘要:

    地貌是自然地理环境的重要要素之一,对土地利用景观格局具有深刻的影响。以陕西省安塞县为例,依据景观生态学原理,运用ArcGIS软件,对不同地貌类型下的土地利用景观格局进行了分析研究。结果表明,不同地貌区景观类型组合不相同,不同景观类型在同一地貌区内的格局特征大不一样,同一景观类型在不同地貌区的空间格局也有明显差异。河谷阶地区景观的空间异质化程度高,多样性和均匀度指数大,黄土梁涧区次之;黄土峁状丘陵区以草地作为本底,其他景观要素镶嵌于这一本底,优势度高;黄土梁峁丘陵区形状最复杂,斑块凸起多,形状不规整,斑块间大小差异十分明显。

    Abstract:

    Landform is the most important natural environment element and it has profound effects on thelandscape pattern of land utilization.Ansai County of Shaanxi Province located in the loess hilly-gully regionwas selected as the special case to conduct the research on landscape pattern of land utilization under differentgeomorphologic types based on the principles of landscape ecology using ArcGIS software package.Resultsshow that the combinations of landscape types are dissimilar in different geomorphologic types.Meanwhile,the patterns of different landscape types are distinct in the same geomorphologic area.The same landscapetype distributed in the different geomorphologic areas is dissimilar.Generally,the landscape in the valley terrace area shows higher spatial heterogeneity and greater> 类> ? diversity and evenness indexes,followed by thelandscape in the loess ridge ravine area.In the loess hilly and valley area,the landscape for grassland with ahigher value of dominance index is the substratum element,surrounded by other landscape types.In theloess flat-topped ridge area,the shapes of landscape types are complex and irregular,and many plaques risewith obvious difference in size.

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钟德燕,常庆瑞.黄土丘陵沟壑区不同地貌类型土地利用景观格局[J].水土保持通报,2012,(3):192-197

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  • 收稿日期:2011-04-21
  • 最后修改日期:2011-08-30
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  • 在线发布日期: 2014-11-25
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