期刊论文

Spatial Variability of Soil pH Value and Its Influencing Factors in the Soil Layer of Northwestern Hubei Province

中文

长江流域资源与环境

1004-8227

2020

29

2

488-498

10.11870/cjlyzyyhj202002022

41271534:国家自然科学基金 40971218:国家自然科学基金 2018-02-10:自然资源部国土整治中心重点项目 :农业部耕地质量提升与化肥减量增效项目

本校为第一机构

土壤pH值是耕地质量表征的重要指标之一,精确估算土壤pH值具有重要意义。以鄂西北山区十堰市为研究区,采集了701个耕作层土样,测定分析土壤pH值,运用地统计学方法和GIS技术探讨了鄂西北耕层土壤pH值的空间变异特征,利用方差分析和回归分析对其主要影响因素进行量化分析。结果表明:研究区土壤pH值为6.46±0.84,变异系数为13.00%,属中等变异强度。全市土壤pH值空间分布总体特征表现为低值区主要分布在研究区中部和西南部,高值区主要分布在北部和东南部;整体上呈现从东北向西南逐渐降低的空间分布格局,通过回归分析得出成土母质是研究区土壤pH值空间变异的主控因素,能够独立解释空间变异的13.6%,其...

Soil pH value is the major property influencing the cultivated land quality. It is important to measure and to understand the spatial distribution of soil pH value. In this research, Shiyan city was chosen as an example in the mountainous area of northwest Hubei province and a total of 701 soil samples of cultivated land were collected in Shiyan city for measurement of soil pH value. Furthermore, spatial variability of soil pH value in this region was analyzed by using the geo-statistics and GIS(Geographic Information System), and its dominatin...