摘要
以宁夏红寺堡区为例,采用2015年遥感影像,综合运用遥感、GIS手段、景观指数法等多种研究方法,从景观的要素构成及景观形态、不同景观的空间关系和景观空间构型4个方面来研究了景观格局的粒度变化效应,并确定了最佳粒度值,根据最佳粒度进行了研究区景观格局分析。结果表明:粒度与景观指数都具有相关性且粒度与部分景观指数拟合效果较好,确定最佳粒度为80m;草地为研究区主要景观类型且草地景观优势明显,占景观总面积的61.8%,是基质景观;研究区耕地和林地景观分布较为均匀;景观形状指数为31.229,分维数为1.040 1,表明景观整体主要由团聚的大斑块组成,形状复杂程度适中,蔓延度指数为65.254 7,表明破碎化程度不高,稳定性较差,不利于土地利用景观格局现状的维持。
We selected Hongsibu as the study area,and used the remote sensing data of 2015 and RS,GIS and Fragstats 3.3 to explore landscape index characteristics with grain size change and the area loss,and ultimately determined the optimal grain size for analyzing land-use landscape pattern.We considered four aspects of landscape elements:spatial pattern,spatial form,spatial relations and spatial configuration.The results showed that some landscape indices and grain size could be fitted to a mathematical relationship,and the determined optimal grain size was 80 m.Grass was the main land-use landscape type across the study area,accountiong for 61.8%,the distribution of cultivated land and forest land in the study area is more uniform.The whole landscape was small heterogeneity and composed of large patches.The shape complexity was moderate,the degree of fragmentation was not serious and landscape stability was poor.
作者
叶均艳
王亚娟
刘小鹏
韩晓佳
温胜强
YE Junyan;WANG Yajuan;LIU Xiaopeng;HAN Xiaojia;WEN Shengqiang(College of Resources and Environment,Ningxia University,Yinchuan 750021,China;Key Laboratory of Resource Assessment and Environmental Control in Arid Region of Ningxia,Yinchuan 750021,China)
出处
《水土保持研究》
CSCD
北大核心
2018年第2期300-306,314,共8页
Research of Soil and Water Conservation
基金
国家自然科学基金"宁夏生态移民安置区生态风险及其空间分异研究"(41461039)
