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黄土高原恢复植被防止土地退化效益研究
引用本文:常庆瑞,安韶山,刘京,王斌,魏永胜.黄土高原恢复植被防止土地退化效益研究[J].水土保持学报,1999,5(4):6-9.
作者姓名:常庆瑞  安韶山  刘京  王斌  魏永胜
作者单位:西北农业大学,陕西杨陵,712100
基金项目:国家科技攻关项目,96-004-05-08,
摘    要:通过野外考察和室内分析,研究结果表明:在黄土高原地区恢复植被能显著提高土壤有机质和速效氮、钾等营养元素的含量,降低土壤pH和容重,增加土体中水稳性团聚体的数量,提高土地的生产能力,促进土壤腐殖化和粘化过程的进行.乔木林地速效养分丰富,粘粒和>0.25mm团聚体的数量大;灌丛草地则酸性较强,坚实度偏低,>0.05mm的微团粒含量较高.乔木林地防止土地退化的效益好于灌丛草地.

关 键 词:黄土高原  植被恢复  土地退化  改良效益
文章编号:1007-2209(1999)04-0006-04
修稿时间:1999-06-18

Study on Benefits of Recovering Vegetation to Prevent Land Deterioration on Loess Plateau
CHANG Qing-rui,AN Shao-shan,LIU Jing,WANG Bin,WEI Yong-sheng.Study on Benefits of Recovering Vegetation to Prevent Land Deterioration on Loess Plateau[J].Journal of Soil and Water Conservation,1999,5(4):6-9.
Authors:CHANG Qing-rui  AN Shao-shan  LIU Jing  WANG Bin  WEI Yong-sheng
Abstract:Based on field investigation and indoor analysis,the results showed thatOn the Loess Plateau region, recovering vegetation can improve remarkably the content of soil organic matter and available N,K etc.,and drop soil pH and bulk density,add the quantity of waterstable aggregate of soil,improve the productive capability of land,enhence the process of humification and illimerization;Available nutrients,clay and>0.25 mm aggregate are all rich in high forest land,however,bush grass land shows more acid and>0.05 mm microaggregate and less solidity.The benefit of high forest land is better than that of bush grass land in preventing soil deterioration.
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