[1]奚同行,左长清,尹忠东,等.红壤坡地土壤水分亏缺特性分析[J].水土保持研究,2012,19(04):30-33.
　XI Tong-hang,ZUO Chang-qing,YIN Zhong-dong,et al.Analysis on Characteristic of Soil Water Deficit on Red Soil Slope Land[J].Research of Soil and Water Conservation,2012,19(04):30-33.
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红壤坡地土壤水分亏缺特性分析

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 19 期数: 2012年04期 页码: 30-33 栏目: 出版日期: 2012-08-20
Title:
Analysis on Characteristic of Soil Water Deficit on Red Soil Slope Land
作者:
奚同行1, 左长清2, 尹忠东3, 王昭艳2, 张京凤2
1. 江西省水土保持科学研究所, 南昌 330029;
2. 中国水利水电科学研究院, 北京 100048;
3. 北京林业大学 水土保持学院, 北京 100083
Author(s):
XI Tong-hang1, ZUO Chang-qing2, YIN Zhong-dong3, WANG Zhao-yan2, ZHANG Jing-feng2
1. Jiangxi Provincial Research Institute of Soil and Water Conservation, Nanchang 330029, China;
2. China Institute of Water Resources and Hydropower Research, Beijing 100048, China;
3. College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China
关键词:
红壤坡地; 水分亏缺; 土壤水分; 特性分析
Keywords:
red soil slope-land; water deficit; soil water; characteristic analysis
分类号:
S152.7
摘要:
采用土壤水分张力计观测研究了江西红壤坡地年内土壤水分变化特征，分析对比了土壤不同层次、时间和坡位的土壤水吸力变化，以及在百喜草种植、百喜草覆盖、裸露3种处理下红壤坡地土壤水分亏缺状况。结果表明：不同土层、不同坡位、不同土地利用类型土壤水分亏缺程度不同。从土壤水分亏缺的垂直变化来看，底层>表层>中层。不同土层，其水吸力随时间变化的趋势与变化范围也不同，各土层年均土壤水吸力表现为：下层>上层>中层，同时上层土壤水吸力变化幅度大，中层、下层变化幅度较小；从不同坡段来看，上坡中坡土壤水分略微亏缺，下坡土壤水分充足。从不同土地利用措施来看，百喜草种植的区域水分亏缺度最大，百喜草覆盖的区域土壤水分亏缺度最小。
Abstract:
Based on the measurement with tensiometer, characteristics of soil water seasonal dynamic in sloping red soil lands in Jiangxi Province were investigated. The effects of soil depths and slope positions on changes of soil water potential were analyzed. The status of soil water deficiency under three treatments (Paspalum notatum flugge planting, mulched by Paspalum notatum flugge, bared land) was compared. The results showed that soil water deficiency status was different at different depths under different land use types. From the view of soil profile, the order of soil water deficiency was: bottom layer>surface layer>middle layer. The order of annual mean values of soil water potential was: bottom layer>surface layer>middle layer. The variation of soil water potential was higher at surface layer than other layers. The upper and middle slope had moderate soil water deficiency while foot of slope had sufficient water supply in soil. In terms of land use types, the soil water deficiency under Paspalum notatum flugge planting treatment was the highest while the treatment mulched by Paspalum notatum flugge was the lowest.

参考文献/References:

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备注/Memo

收稿日期:2012-3-3;修回日期:2012-4-16
基金项目:国家“十一五”科技支撑项目（2009BADC6B06）；国家“十二五”科技支撑项目（2012BAC16B03）；水利公益性行业科研专项经费项目（200901047）
作者简介:奚同行（1968- ），男，江西南康人，高级工程师，研究方向为土壤侵蚀与流域治理、生产建设项目水土流失防治。E-mail：tonghangxi@163.com。

更新日期/Last Update: 1900-01-01