郑州市土壤多样性和土地利用多样性研究及关联分析

以郑州市为研究对象,将多样性理论及其测度方法应用于土壤和土地利用多样性研究.选取2004年和2009年两个时期的TM影像进行土地利用分类,并基于第二次土壤普查的郑州市土壤矢量数据,对郑州市土壤和土地利用的组成分布多样性和空间分布多样性进行了初步分析和定量化研究,探索了土壤和土地利用之间的关联性。结果表明:郑州市土壤构成组分较为复杂,其组成分布多样性指数取值0.776,土地利用组成分布多样性指数由2004年的0.610增加为2009年的0.651;郑州市同一土属或土地利用类型的空间分布多样性指数在不同网格尺度下存在相似的分异规律,其中空间分布最离散的土壤类型为砂土,空间分布最离散的土地利用类型为耕地;在3种空间网格尺度下,城镇建筑用地、农村居民点和工矿用地与各典型土壤的关联系数随研究时期推进均呈不同程度的增加趋势。

Evaluation and Correlative Analysis of Pedodiversity and Land Use Diversity in Zhengzhou

Taking Zhengzhou as the research object,the diversity theory and measure method were applied to the research on pedodiversity and land use diversity.Based on TM image in 2004 and 2009 whose land use types were classified while the soil vector data was used based on the second national survey,the preliminary analysis and the quantitative research of the diversity between soil and land use in both composition distributions and spatial distributions were conducted and discussed the relationship between soils and land use types.Results showed that soil composition with composition diversity index(0.776) in Zhengzhou was relatively complicated and the composition diversity index of land use was increased from 0.610 in 2004 to 0.651 in 2009.The spatial diversity index of the same soil or land use in Zhengzhou had similar differentiation laws in different grid scales with the most discrete space distribution types of soils for sandy soil and cultivated land.In the three kinds of space grid scales with the propelling of the study period,the connection index between urban construction land,countryside residential area and industry and mining land and typical types of soils presented the increasing tendency in varying degrees.