摘要
研究陕西省神木县中鸡镇不同植被类型下土壤含水量的变化特征,主要对不同植被类型下0~70 cm剖面土壤水分总体分布特征进行分析.研究区土壤水分平均值范围3.42%~5.66%,从垂直分布分析,不同地类下土壤水分含量沿垂直剖面的变化具有波动性.小叶杨林地剖面土壤水分的变化呈波浪形趋势,沙柳灌丛剖面土壤水分的变化总体呈降低型趋势,沙葱草地剖面土壤水分的变化总体上呈增长型趋势,裸露沙地剖面土壤水分的变化总体呈稳定型趋势.对研究区土壤水分进行半方差函数分析,块基值显示小叶杨林地、沙葱草地、沙柳灌丛、裸露沙地的土壤水分属于强烈的空间自相关.
The variation of soil moisture in different vegetation types in Zhongji town which mainly for different vegetation types in 0~70 cm soil moisture distribution characteristics are analyzed. We find the average range of soil moisture in the study area is 3.42% to 5.66%and the analyze the vertical distribution and changes in volatility under different soil moisture content along the vertical profile change of soil moisture of Pupulus simonii in a wavy trend. The overall change of soil moisture of Salix psammophila has a decreasing trend. The overall changes of soil moisture on the grassland Allium mongolicum has a growing trend. The overall change of bare sandy soil moisture has a stable trend.This paper analyses the semivariogram of soil moisture in the study area and finds the block value display of P. simonii,Allium grass,bare sand,and S. psammophila soil moisture are due to the strong spatial auto-correlation.
出处
《河南科学》
2018年第1期65-69,共5页
Henan Science
基金
国家自然科学基金(40071005)
教育部科学技术重点项目(105152)
关键词
土壤含水量
植被类型
半平方差函数
中鸡镇
soil moisture content
vegetation type
half-squared variance function
Zhongji town
