安固里淖干湖区土壤理化因子空间分布特征

发布时间：2018-01-03 17:34

  本文关键词：安固里淖干湖区土壤理化因子空间分布特征　出处：《湿地科学》2016年04期 　论文类型：期刊论文

  更多相关文章： 表层土壤 土壤理化性质 空间分布 安固里淖

【摘要】：对安固里淖干湖区的土壤粒度组成、含盐量、含水量、有机质和p H的空间分布特征进行了研究。结果表明,湖区内土壤主要以粉粒(0.002~0.05 mm)为主,湖区外围土壤主要以粉粒(0.002~0.05 mm)、极细砂(0.05~0.1 mm)和细砂(0.1~0.25 mm)为主,湖区东部土壤比西部土壤质地更细。土壤含水量由湖区内部向外围逐渐减小,但湖岸边缘土壤含水量最高。研究区土壤盐碱化现象明显,含盐量和p H都较高,湖区东部土壤含盐量和p H都高于西部。研究区土壤有机质含量总体偏低,与西部相比,干湖区东部土壤有机质含量较高。研究区土壤含盐量、含水量与p H显著正相关,有机质含量与p H显著负相关。
[Abstract]:The spatial distribution characteristics of soil granularity, salt content, water content, organic matter and pH were studied. In the lake area, the main soil is 0. 002 ~ 0. 05 mm), and in the peripheral soil of the lake area is 0. 002 ~ 0. 05 mm). Very fine sand (0. 05 ~ 0. 1 mm) and fine sand (0. 1 ~ 0. 25 mm) are dominant. The soil texture in the eastern part of the lake area is thinner than that in the west, and the soil moisture content decreases gradually from the inside to the periphery of the lake area. But the soil water content was the highest at the edge of the lake. The salinization of the soil in the study area was obvious, and the salt content and pH were both high. The soil salinity and pH in the eastern part of the lake area were higher than those in the western region. The content of soil organic matter in the study area was on the low side. Compared with the western region, the soil organic matter content in the eastern part of the dry lake region was higher than that in the western region. Water content was positively correlated with pH, and organic matter content was negatively correlated with pH.
【作者单位】： 河北师范大学资源与环境科学学院河北省环境演变与生态建设省级重点实验室;河北省科学院地理科学研究所;北京师范大学地表过程与资源生态国家重点实验室北京师范大学防沙治沙教育部工程研究中心;
【基金】：国家自然科学基金重点项目(41330746) 国家自然科学青年基金项目(41301291)资助
【分类号】：S153
【正文快照】： 北京师范大学防沙治沙教育部工程研究中心,北京100875)干湖区通常指干旱半干旱地区尾闾湖或积水洼地水面萎缩后,裸露出来的曾被水面覆盖的部分及其滨岸地带[1]。干湖区是自然环境演变和人为干扰下湖泊变迁的结果,不仅能反映土壤结构状况,也影响植物的生长[2]。国内外学者在干，

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