【摘要】 运用景观生态学原理,借助GIS技术,选取景观指数对豫西黄河流域土地利用景观格局进行分析。结果表明,林地和以旱地为主的农业景观是豫西黄河流域的主体景观类型;各景观类型间斑块密度值差距较大,斑块形状指数差异较明显,总体上较简单;研究区域景观异质性和多样性较高,各景观类型所占比例差异较大,农田和林地占有较大优势。该区域景观破碎化程度较小,特别是西部地区地形起伏较大,人类干扰活动相对较小。更多还原

【Abstract】 There was an obvious spatial difference in landscape spatial patterns of land-use in Henan Province,because of the double effects of natural conditions and human activities.The landscape spatial patterns of land-use in Yellow River Basin in west Henan Province were quantitatively analyzed by using landscape indices in the article.The results showed that the landscape patches were mainly agricultural landscape and forest landscape type,which showed that the matrix of landscape was agricultural and forest.The gap of Patch Density and Mean Shape Index among landscape types was significant,the patches type of landscape elements was simple in the mass.The Shannon Diversity Index,Shannon Evenness Index and Landscape Dominance Index were 1.909,0.615 and 4.682 respectively.And this showed that there were a high heterogeneity and abundant landscape types in the form of mosaic.The Landscape Fragmentation Index and Edge Density were 0.00047 and 45.855m/hm2 respectively in study area.And the landscape fragmentation degree in study area was rather low especially in western hilly-gully region with slight human-caused disturbance.更多还原