闻喜县不同乡镇耕地利用的景观结构分析  

Landscape Patterns Analysis for Farmland Use of the Different Towns in Wenxi County

作　　者：杨燕新[1] 毕如田[2] 刘庚[2] 

机构地区：[1]山西农业大学文理学院,山西太谷030801 [2]山西农业大学资源环境学院,山西太谷030801

出　　处：《山西农业大学学报（自然科学版）》2008年第2期125-128,共4页Journal of Shanxi Agricultural University(Natural Science Edition)

基　　金：山西省自然科学基金项目(20041098)

摘　　要：应用景观生态学的理论和方法,计算分析了闻喜县13个乡镇耕地利用的景观多样性指数、优势度、均匀度和分维数等指标。结果表明:各乡镇耕地利用的景观结构受地理位置、地形和地貌的影响,地理位置优越、交通便利、地势平坦、海拔较低的乡镇,其人口较多,耕地斑块数较多、景观多样性指数相对较大;各个乡镇耕地斑块的分维数受地理位置的直接影响,分维数指标呈现以南同蒲铁路为轴线,两边距离轴线越远分维数越低,越靠近轴线分维数越高。By analyzing the landscape patterns of farmland use in different towns of Wenxi county,we can draw the following conclusions： The landscape structure of farmland in different towns of Wenxi county is affected not only by the every town geographical position,but also by the terrain and geomorphology and other natural conditions.Located in the middle of Wenxi county,such towns as Tongcheng,Dongzhen,Guojiazhuang,Liyuanzhen,are with an advantageous geographical disposition,convenient transposition,plain terrain,low sea level and widespread hills.In addition to these advantages,these towns have advantageous factors including inclined plains in front of hills and river valley alluvial plain.These terrain and geomorphology result in a larger number of patches and higher landscape diversity index.The landscape shapes for farmland use in respective towns are directly affected by geographical disposition.The more distance the town has to Nantongpu railway,the more the low fractal dimension is,vice versa.

关 键 词：景观格局 景观指数 耕地利用 

分 类 号：S152.4[农业科学—土壤学]