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STUDIES ON SOIL AND WATER CONSERVATION FUNCTIONS OF LITTER IN CHINESE PINE STAND ON LOESS PLATEAU
Authors
刘国彬
吴钦孝
赵鸿雁
Publication date
1 January 2003
Publisher
Abstract
自 1 8 68年巴乌尔研究栎类林枯枝落叶层的持水性以来 (苏宁虎 ,1 989) ,各国科研人员先后开展了森林枯枝落叶层截留降水、持水特性等方面的研究 (刘向东等 ,1 989;杨吉华等 ,1 993;Laws,1 941 )。特别是黄土高原 ,植被稀少 ,人为活动剧烈 ,降雨集中 ,且雨强大 ,加之黄土的易蚀特性 ,水土流失十分严重 ,生态环境非常脆弱。 1 999年 ,江泽民总书记提出“再造一个山川秀美的西北地区” ,为本区的生态环境建设指明了方向。本项研究以人工油松林枯枝落叶层为对象 ,系统的研究了它的多项水土保持功能 (吴钦孝等 ,1 992 ;苏宁虎 ,1 988;Jakson ,1 975 ) ,使人们认识到枯枝落叶层在抵御自然灾害方面所发挥的巨大功能。1 试验区概况本试验于 1 996~ 2 0 0 0年在宜川县铁龙湾林场森林水文和水土保持效益监测站完成。该区海拔 860~ 1 2 0 0m ,坡度 2 0°~ 2 5°,年均降水量 5 74 0mm ,试验期年均降水量 436 3mm ,平均气温 9 7℃ ,土壤为灰褐色森林土。供试油松 (Pinustabulaeformis)林为 1 96..
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Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources
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Last time updated on 21/09/2018