HUANG Ye,WANG Xuemei.Spatial Difference of Soil Water and Salt in Typical Plant Communities in Arid Region[J].Research of Soil and Water Conservation,2018,25(02):126-130.
干旱区典型植物群落土壤水盐空间差异
- Title:
- Spatial Difference of Soil Water and Salt in Typical Plant Communities in Arid Region
- Keywords:
- typical plant community; soil water and salt; spatial difference; oasis-desert transition zone
- 分类号:
- Q948
- 摘要:
- 以渭干河-库车河三角洲绿洲-荒漠过渡带典型植物群落以及土壤因子作为研究对象，通过野外调查、样品采集和室内分析，对典型植物群落物种与土壤因子的空间关系进行了统计分析，探讨了土壤盐渍化的影响因素及其变化规律。结果表明：（1）随着土壤剖面深度的增加，土壤含水量整体逐渐升高，土壤含盐量和电导率在各层均具有较高的含量分布，土壤pH值在不同样线不同剖面整体呈碱性。（2）随着土壤的含盐量、电导率和pH值的增加，植物多样性指数与优势度指数等呈相应下降趋势，典型植物群落的物种多样性与土壤含水量和pH值具有显著的相关性（p<0.05），而与土壤含盐量和电导率无明显的相关关系（p>0.05）。（3）研究区土壤表层的盐渍化现象非常严重，对植物群落的物种多样性影响较大，土壤水盐空间分布呈由东向西逐渐增加的趋势。
- Abstract:
- Based on the field investigation, sample collection and laboratory analysis, the spatial relationship between typical plant community and soil factor was analyzed statistically in order to explore the influencing factors on soil salinization and its variation. The results showed that:(1) with the increase of soil depth, the soil water content increased gradually, and the soil salinity and conductivity had higher distribution in each layer, and the soil pH values in different profiles of different sections were alkaline in general; (2) with the increase of soil salinity, electrical conductivity and pH value, the plant diversity index and dominance index of the corresponding area decreased correspondingly; the species diversity of typical plant community was related to soil water content and pH value (p < 0.05), but had no significant correlation with soil salinity and electrical conductivity (p > 0.05); (3) the salinization of the surface soil in the study area is very serious, which has a great influence on the species diversity of the plant community, and the spatial distributions of soil water and salt are increasing from east to west.
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备注/Memo
收稿日期:2017-4-26;改回日期:2017-5-31。
基金项目:国家自然科学基金（41561051，41261051）；新疆师范大学国家级大学生创新创业训练计划项目（201610762020）
作者简介:黄晔(1997-),女,河南商丘人,本科生,研究方向为地理信息科学。E-mail:1041166949@qq.com
通讯作者:王雪梅(1976-),女,江苏铜山人,博士,教授,硕士生导师,主要从事干旱区资源环境遥感应用研究。E-mail:502529672@qq.com