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Study on Relationship between Growth of Artificial Robinia pseudoacacia Plantation and Soil Desiccation in the Loess Plateau of Northern Shannxi Province
Authors
李裕元
王力
邵明安
Publication date
1 January 2004
Publisher
Abstract
通过对陕北黄土高原南北 6个人工刺槐林样地进行标准地调查 ,结合树干解析与土壤含水量资料 ,分析了人工刺槐林树高、胸径、材积等指标的生长状况与土壤含水量亏缺的关系。结果表明 ,土壤含水量的亏缺程度与刺槐林的生长有明显的一致性。南部的宜君降雨充沛 ,土壤含水量基本没有亏缺 ,没有产生明显的土壤干化现象 ,相应刺槐林的生长状况良好 ,没有产生衰退迹象。随着降雨量的减少 ,从富县开始 ,土壤含水量发生了严重程度不一的亏缺现象。富县样地因水分亏缺而形成的干化层已影响到了人工刺槐林的生长 ,林分已有了衰退的迹象。样地吴旗、安塞、绥德和米脂则土壤含水量亏缺严重 ,形成了明显的土壤干化层 ,并且严重影响到了人工刺槐林的生长和发育 ,导致人工刺槐林成为低效低产林 ,限制了林分的生态防护效益 ,说明这些地区属于不适宜人工刺槐林生长的分布区
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Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources
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oai:ir.iswc.ac.cn/:361005/2029
Last time updated on 21/09/2018