文档介绍：红壤地区土壤退化及恢复重建研究
Ⅱ退化红壤的防治对策
刘杰,张杨珠收稿日期:
基金项目:国家“863”计划项目(2006AA10Z419)
作者简介:刘杰(1980-),男,湖南湘潭人,在读博士,主要从事退化土壤与土壤质量保育方面研究。E-mail: jiebaz@
通讯作者:张杨珠
(湖南农业大学资源与环境学院,湖南长沙 410128)
摘要:由于红壤的生态脆弱性及亚热带的暖湿气候特征,亚热带红壤区已成为自然生态系统破坏与退化的严重区域,亚热带红壤的退化机理及恢复与重建成为土壤学、水土保持、生态学研究的热点问题之一。本文论述了退化红壤的防治对策及重建措施,旨在为开展该领域的研究与技术推广提供参考。
中图分类号: 文献标识码: 文章编号:
关键词:红壤;退化;防治对策;恢复重建
On The Degradation and Restoration of Red Soil
ⅡThe controlling and reconstruction techniques of degraded Red Soil
Liu Jie, Zhang Yangzhu
(Collage of Resources and Environment, Hunan Agriculture University, Changsha, Hunan 410128)
Abstract: The red soil region of subtropic area is one of the most densely populated areas in China in which natural ecosystem has been heavily destructed and degraded to ecological weakness and climatic characteristics. The research of degradation, restoration and reconstruction in these regions has e one of the hot points in soil science, water and soil conservation science and ecology. The research has concentrated on the control methods and ecological restoration about degraded red soil was discussed.
Keyword: red soil; degradation; control methods; restoration and reconstruction
红壤是亚热带地区具有富铝化特征的主要土壤类型,该区水热的季节分布很不平衡,富铝化和生物富集化两种过程长期作用导致红壤土层深厚,酸、黏、板、瘦,脱硅富铝作用强烈、铁游离度高、风化淋溶作用强、黏粒及次生矿物含量高等显著特点。由于高温多湿的气候条件,加上土地利用过度、耕作管理不当等的影响,该地区土壤退化严重,主要表现为水土流失严重,养分贫瘠化,土壤化学污染,土壤酸化等形式,面对红壤地区十分严峻的土壤退化现实,如何防止土壤退化