塔里木河流域荒漠河岸林土壤理化性质

Soil Physical and Chemical Properties of Desert Riparian Forest in Different Areas of the Tarim River

以塔里木河上、中、下游荒漠河岸林为研究对象,采用外业调查取样与实验检测分析法,比较3个地区河岸林土壤理化性质。结果表明:3个地区土壤的理化性质指标存在显著性差异。上、中游土壤含水率、有机质、全氮、全磷、全盐量、碱解氮、速效磷质量分数较高,而全钾质量分数较低,p H值下游最高;从相关性来看,土壤含水率与有机质、全磷、速效磷呈显著相关,而与p H值、全钾、速效钾呈显著性负相关。表明水分条件是影响塔里木河流域土壤性质的关键因子。

With the riparian forest of Tarim River in the different areas desert,we used the field investigation and laboratory test to study the soil physical and chemical properties of three different areas. There was significantly different in the three districts. In upper and middle reaches,the soil moisture content,the organic matter,N,P,total salt,available N and available P were with much higher value,however,K was with a relative lower value,and the highest pH was in downstream.By correlation analysis,the soil moisture content and organic matter,P and available P were significant correlation,and pH,K,available K were significant negative correlation. So,the water condition was the key factor of soil properties in Tarim River Basin.