[1]赵世伟,苏静,杨永辉,等.宁南黄土丘陵区植被恢复对土壤团聚体稳定性的影响[J].水土保持研究,2005,12(03):27-28,69.
　ZHAO Shi-wei,SU Jing,YANG Yong-hui,et al.Influence of the Soil Structure in Loess Hilly Region of Southern Ningxia Under Different Man-made Vegetation[J].Research of Soil and Water Conservation,2005,12(03):27-28,69.
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宁南黄土丘陵区植被恢复对土壤团聚体稳定性的影响

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 12 期数: 2005年03期 页码: 27-28,69 栏目: 出版日期: 1900-01-01
Title:
Influence of the Soil Structure in Loess Hilly Region of Southern Ningxia Under Different Man-made Vegetation
作者:
赵世伟1, 苏静2, 杨永辉1, 刘娜娜2
1. 中国科学院水利部水土保持研究所;
2. 西北农林科技大学资源环境学院, 陕西杨陵 712100
Author(s):
ZHAO Shi-wei1, SU Jing2, YANG Yong-hui1, LIU Na-na2
1. Institute of Soil and Water conservation, Chinese Academy of Science and Ministry of Water Resources;
2. Northwest Sci-tech University of Agriculture and Forestry, Yangling, Shaanxi 712100, China
关键词:
土壤结构; 分形维数; 平均重量直径
Keywords:
soil structure; fractal fraction; mean weight diameter
分类号:
S152.4
摘要:
应用分形维数和平均重量直径对宁南黄土丘陵人工植被下土壤团聚体的结构进行了分析，结果发现团聚体分形维数农田最大，山杏、沙棘和柠条其次，荒草地最小，分形维数与>0.25mm团聚体含量负相关。土壤团聚体平均重量直径柠条>沙棘>荒草地>山杏>农田，平均重量直径与>0.25mm团聚体含量成显著的正相关关系。植被恢复改善了土壤结构，提高土壤抗侵蚀能力。在评价土壤团聚体稳定性方面，分形维数与平均重量直径间的相关性较好。
Abstract:
The soil structure in Loess Plateau of Southern Ningxia was studied with the fractal fraction and mean weight diameter. The result showed that:fractal fraction of cropland was the highest, pasture was the lowest, and there was a negative correlation between the fractal fraction and the amount of>0.25 mm aggregate. Mean weight diameter (MWD) in vegetation was bigger than cropland, there was a positive correlation between MWD and amount of>0.25 mm aggregate. It was gotten that fractal fraction and mean weight diameter can be used to appraise the soil structure.

参考文献/References:

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备注/Memo

收稿日期:2004-12-22;改回日期:。
基金项目:国家“十五”重大科技攻关计划课题（2001BA606A—4）；中科院知识创新工程重要方向项目（KZCX3-SW-421）资助
作者简介:赵世伟（1962- ），男，研究员，主要从事土壤与水资源管理研究。

更新日期/Last Update: 1900-01-01