YANG Shi-qi,YANG Zheng-li.The Changes of Soil Organic Matter and pH in the Course of Ecosystem Succession in the Loess Plateau[J].Research of Soil and Water Conservation,2008,15(02):159-163.
黄土高原生态系统演替进程中土壤有机质和pH值变化规律
- Title:
- The Changes of Soil Organic Matter and pH in the Course of Ecosystem Succession in the Loess Plateau
- Keywords:
- the Loess Plateau; ecosystem succession; organic matter; pH value
- 分类号:
- S153.621
- 摘要:
- 通过对黄土高原生态系统演替进程中土壤有机质和pH值变化进行分析,结果表明:在同一演替系列中,随演替进程的推移,土壤中有机质增加,pH值减小;在不同地段上,演替高级阶段土壤的有机质高于低级阶段,pH值正好相反;人为间断干扰的生态系统土壤有机质下降,pH值升高;人为持续干扰的亚顶级生态系统土壤有机质明显降低,PH值明显升高.
- Abstract:
- The soil organic matter and pH value were analyzed in the course of ecosystem succession in the Loess Plateau.The results are:the soil organic matter increases and pH value decrease by succession process in the same sere;the soil organic matte is higher in advanced stage than early stage,and pH value is lower in advanced stage than early stage;the soil organic matter decreases and pH value increase because of interrupted jamming,and the soil organic matter decreases distinctly and pH value increases distinctly in sub-climax ecosystem.
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备注/Memo
收稿日期:2007-5-22;改回日期:。
基金项目:中央级公益科研基金"农业环境演变及其修复研究";土壤有机质提升试点补助(2007A002)
作者简介:杨世琦(1970- ),男,副研究员,博士,主要从事农业生态与环境保护研究.E-mail:shiqiyang@126.com
通讯作者:杨正礼.E-mail:yangzl@cjac.org.cn
通讯作者:杨正礼.E-mail:yangzl@cjac.org.cn