银川平原土壤盐渍化与植被发育和地下水埋深关系

现代地质 ›› 2009, Vol. 23 ›› Issue (1): 23-27.

银川平原土壤盐渍化与植被发育和地下水埋深关系

金晓媚¹，胡光成¹，史晓杰²

1中国地质大学水资源与环境学院，北京100083; 2宁夏地质调查院，宁夏银川750021

收稿日期:2008-07-20 修回日期:2009-01-10 出版日期:2009-02-20 发布日期:2011-12-21
作者简介:金晓媚，女，副教授，1968年出生，水文学与水资源专业，主要从事生态水文学方面的研究工作。Email:jinxm@cugb.edu.cn
基金资助:
国家自然科学基金项目(40772158)。

Relationship between Soil Salinization and the Vegetation Growing, Groundwater Depth in the Yinchuan Plain

JIN Xiao-mei¹, HU Guang-cheng¹, SHI Xiao-jie²

1School of Water Resources and Environment, China University of Geosciences, Beijing100083, China;
2Institute of Geological Survey of Ningxia, Yinchuan,Ningxia750021,China

Received:2008-07-20 Revised:2009-01-10 Online:2009-02-20 Published:2011-12-21

摘要/Abstract

摘要：

土壤盐渍化是制约银川平原内部植被生长最主要的生态环境地质问题，也是影响区域农业生产的第一障碍性问题。基于遥感数据，结合表层土壤含盐量及地下水位观测资料，对银川平原土壤盐渍化与植被和地下水的关系进行了定量研究。结果表明：随着表层土壤含盐量的增大，NDVI(归一化植被指数)逐渐减小，植被发育较好的区域土壤含盐量均小于3 g/kg；植被主要生长在没有盐渍化或轻微盐渍化的地区，在中度和重度盐渍化地区几乎没有植被发育；在枯水季节，研究区土壤盐渍化最严重的地下水位埋深为1.5 m，而土壤盐渍化较为严重的地下水位埋深范围为1~3 m。

关键词: 土壤盐渍化, 植被发育, MODIS NDVI, 地下水位埋深, 银川平原

Abstract:

Soil salinization is one of the most important eco-environmental problems constraining the vegetation growth in the Yinchuan plain. It is the first obstruction for the regional agricultural production. Based on the remote sensing data, surface soil salt and groundwater table data, this paper studied the relationships between the soil salinization and the vegetation, groundwater depth in Yinchuan plain. The results indicated that the NDVI(normalized difference vegetation index) decreased with the increase of surface soil salt contents; and the vegetation growth is well developed as the surface soil salt content is smaller than 3 g/kg. The vegetation mainly grows in the area with no salinization or slight salinization;little vegetation grows in the area with moderate salinization and serious salinization. In dry seasons, the most serious salinization occurs when the groundwater depth is 1.5 m and the salinization is more serious as the groundwater depth is between 1 and 3 m.

Key words: soil salinization, vegetation growing, MODIS NDVI, groundwater depth, Yinchuan plain

中图分类号:

P641
Q948.15

金晓媚胡光成史晓杰. 银川平原土壤盐渍化与植被发育和地下水埋深关系[J]. 现代地质, 2009, 23(1): 23-27.

JIN Xiao-Mei HU Guang-Cheng SHI Xiao-Jie. Relationship between Soil Salinization and the Vegetation Growing, Groundwater Depth in the Yinchuan Plain[J]. Geoscience, 2009, 23(1): 23-27.

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