|
|||||
|
|
| 侵蚀环境退耕撂荒地水稳性团聚体演变特征及土壤养分效应 | |
| 引用本文： | 戴全厚,刘国彬,薛萐,翟胜,李小利.侵蚀环境退耕撂荒地水稳性团聚体演变特征及土壤养分效应[J].水土保持学报,2007,21(2):61-64,77. |
| 作者姓名： | 戴全厚 刘国彬 薛萐 翟胜 李小利 |
| 作者单位： | 1. 贵州大学,林学院,贵州,贵阳,550025;中国科学院,西北农林科技大学,水土保持研究所,陕西,杨陵,712100;吉林省水土保持科学研究院,吉林,长春,130033 2. 中国科学院,西北农林科技大学,水土保持研究所,陕西,杨陵,712100 3. 聊城大学,环境与规划学院,山东,聊城,252059 |
| 基金项目： | 国家自然科学基金;中国科学院知识创新工程项目;国家重点基础研究发展计划(973计划) |
| 摘 要： | 研究了侵蚀环境退耕撂荒地生态恢复过程中水稳性团聚体的变化规律及其与土壤养分状况及土壤微生物量的关系，结果表明，侵蚀环境退耕撂荒地土壤水稳性团聚体含量迅速提高，在退耕撂荒的第一个10年，水稳性团聚体增大约253．45％。随着退耕撂荒年限的延长，其增大幅度趋缓，第10～50年，水稳性团聚体仅增大16．42％，之后增大幅度更加缓慢，接近一个稳定的水平。相关性分析和回归分析表明侵蚀环境退耕地撂荒后土壤中〉0．25mm水稳性团聚体与土壤的有机碳、全氮、速磷、碳酸钙、微生物量（C，N，P）、CEC关系密切，达到显著（P〈0．05）或极显著水平（P〈0．01），而与速钾没有明显的相关性。要保持侵蚀环境退耕撂荒土壤良好的结构状况，必须坚持长期封禁，维持土壤有机碳变化处于平衡状态。 |
| 关 键 词： | 侵蚀环境 退耕撂荒地 水稳性团聚体 养分状况 |
| 文章编号： | 1009-2242（2007）02-0061-04 |
| 收稿时间： | 2006-10-01 |
| 修稿时间： | 2006-10-01 |
Dynamics of Soil Water Stable Aggregates and Relationship with Soil Properties on Abandoned Arable Land in Eroded Hilly Loess Plateau |
|
| DAI Quan-hou,LIU Guo-bin,XUE Sh,ZHAI Sheng,LI Xiao-li.Dynamics of Soil Water Stable Aggregates and Relationship with Soil Properties on Abandoned Arable Land in Eroded Hilly Loess Plateau[J].Journal of Soil and Water Conservation,2007,21(2):61-64,77. | |
| Authors: | DAI Quan-hou LIU Guo-bin XUE Sh ZHAI Sheng LI Xiao-li |
| Institution: | 1. Forestry College of Guizhou University, Guiyang 550025; 2. Institute of Soil and Water Consern,ation, Northwestern Sci-Tech University of Agriculture and Forestry, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100; 3. The Soil and Water Conservation Institute of Jilin Province ,Changchun 130033;4. College of Environment and Pro-gramming , Liaocheng University, Liaocheng 252059 |
| Abstract: | In order to understand dynamics of soil water-stable aggregates along chronosequences and relationship with soil physico-chemical properties on abandoned arable land in eroded hilly loess plateau,11 arable old land with different ages after being abandoned in Zhifanggou catchment were studied systematically through the approach of substituting the temporal serial with spatial serial.In addition,the correlation between soil water-stable aggregates and physico-chemical properties were examined.The results showed that the contents of soil water-stable aggregates increased promptly in early abandoned stage,and increased slowly with the extension of being abandoned,then kept a relatively stable content in the follow years.The contents increased by the percentage of 253.45% in the first 10 years of being abandoned,but by only of 16.42% in the follow 40 years.The significant correlations were observed between >0.25 mm aggregate and soil organic carbon,total nitrogen,available P,CaCO3,CEC and microbial biomass C,N,P,but not with available K.It is necessary to close and manage hillsides as well as keep soil organic carbon in a good balance in order to improve soil structure on abandoned arable land in eroded hilly loess plateau. |
| Keywords: | eroded hilly loess plateau abandoned arable land soil water stable aggregates soil properties |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
| 点击此处可从《水土保持学报》浏览原始摘要信息 | |
| 点击此处可从《水土保持学报》下载免费的PDF全文 | |