白杨河-艾里克湖湿地土壤理化性质的空间分布特征  

Spatial Distribution of Soil Physiochemical Properties in Wetlands in the Basin of Baiyang River and Arik Lake

作　　者：闫培锋[1] 周华荣[1] 刘宏霞[1] 

机构地区：[1]中国科学院新疆生态与地理研究所

出　　处：《干旱区研究》2008年第3期406-412,共7页Arid Zone Research

基　　金：国家自然科学基金项目(40271011);中国科学院新疆生态与地理所绿洲学者“博士人才”培养计划项目(20052109);克拉玛依市科技项目(SK2005-15)

摘　　要：通过对白杨河—艾里克湖湿地土壤理化性状的研究,包括土壤颗粒组成、水分含量、盐分、pH值和养分等的空间分布特征。结果表明:大范围分布的土壤主要由细砂和粉砂组成,少数由粗砂粒组成;土壤水分的空间分布特征反映了白杨河河谷沿线局部干旱的现象;在艾里克湖周边发育着盐土和盐渍化土,对植物生长发育有明显的胁迫作用;土壤有机质、全N和全P总体贫乏,全K含量较高,并且有机质和水分的相关性较好,不同植被下土壤有机质含量和含水量的相关系数也不尽相同,但总体反映出干旱区湿地水在土壤有机质分解中的关键作用。In this paper, the soil physiochemical properties in the basin of Baiyang River and Arik Lake are researched. The research contents includes the spatial distribution of soil particle composition, soil moisture content, soil salt content, pH values and soil nutrients sampled from 52 plots in 20 quadrants of the wetlands in the basin of the Baiyang River and Arik Lake. The results show that the soil texture of most samples is composed of fine sand and silt, and that of a few samples is composed of coarse sand. Soil mineralization around the Arik Lake is higher than that in other areas because of the high groundwater level. The spatial distribution of soil moisture content reveals that drought occurs in some wetlands along both riversides of the Baiyang River, especially along the middle reaches, which is closely related to human activities. Solonchak and salinized soil develop around the Arik Lake and stress significantly the plant growth. The organic matter, total N and total P in soils in the basin are generally poor, but the total K is at a high level. There is a significant correlation between the soil organic matter content and the soil moisture content, however, their coefficients are different from different vegetation types. The study results reveal that stream water plays an important role in soil formation and decomposition of soil organic matter in the wetlands in arid areas.

关 键 词：土壤 理化性状 空间分布 湿地 白杨河-艾里克湖 新疆 

分 类 号：S153[农业科学—土壤学]