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科尔沁沙地流动沙丘土壤水分和特征常数的空间变化分析
引用本文:刘新平,张铜会,赵哈林,赵学勇,移小勇.科尔沁沙地流动沙丘土壤水分和特征常数的空间变化分析[J].水土保持学报,2005,19(3):156-159,164.
作者姓名:刘新平  张铜会  赵哈林  赵学勇  移小勇
作者单位:中国科学院寒区旱区环境与工程研究所,奈曼沙漠化研究站,甘肃,兰州,730000
基金项目:国家自然科学基金资助项目(40471004);中国科学院野外台站基金资助项目(1731690200015)
摘    要:选择科尔沁沙地典型流动沙丘作为研究对象,分析了流动沙丘土壤水分的时空变化以及土壤水分特征常数的空间变化规律。结果表明,流动沙丘土壤水分受降雨的响应呈现出明显的时空变化特征;土壤容重、凋萎湿度和机械组成的空间变化,由于流动沙丘风蚀运动的复杂化而表现为无规律性;各部位土壤田间持水量和容重随深度具有显著的负相关关系。同时土壤水分特征常数的量化,可以为流动沙丘的综合整治、恢复和开发利用提供一定的理论支持。

关 键 词:流动沙丘  土壤水分  水分特征常数  时空变化
文章编号:1009-2242(2005)03-0156-04

Analysis on Spatial Variety of Soil Moisture and Characteristic Constant on Mobile Dune in Horqin Sandy Land
LIU Xin-ping,ZHANG Tong-hui,ZHAO Ha-lin,ZHAO Xue-yong,YI Xiao-yong.Analysis on Spatial Variety of Soil Moisture and Characteristic Constant on Mobile Dune in Horqin Sandy Land[J].Journal of Soil and Water Conservation,2005,19(3):156-159,164.
Authors:LIU Xin-ping  ZHANG Tong-hui  ZHAO Ha-lin  ZHAO Xue-yong  YI Xiao-yong
Abstract:This paper analyzes the spatial and temporal variety regulation of soil moisture and soil moisture characteristic constants on mobile dune in Horqin sandy land. The research shows that the soil moisture of mobile dune takes on obvious spatial and temporal variety characteristics with the rainfall, withered moisture and mechanical composition present ruleless variety because of the complication of aeolian movement. There exists notable negative correlativity between the field moisture capacity and soil unit weight with the variety of depth. Atthe same time, the quantification of soil moisture characteristic constants provides some theories for controlling and restoring the mobile dune.
Keywords:mobile dune  soil moisture  characteristic constant  spatial and temporal variety
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