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Effects Different Improvement Measures of Degradated Robinia pseudoacacia in Semi-arid Loess Hilly Region
Authors
吴芳
许鹏辉
陈云明
Publication date
1 January 2009
Publisher
Abstract
采用野外典型抽样调查和室内分析测定的方法,在黄土丘陵半干旱区-安塞水土保持综合试验站研究了退化刺槐林经萌蘖更新和重造侧柏林改造后林地土壤水分含量、乔木根系生物量和生物多样性指标的差异。结果表明:萌蘖更新林地内的土壤水分含量和生物多样性指数均高于重造侧柏林地;不同改造方式下整个土层内根系生物量的差异较大,根系生物量最大的是重造侧柏林地,为17.59 g,最小的是退化刺槐林,为16.59 g。萌蘖刺槐林与退化刺槐林相比,土壤水分含量和生物多样性指数变化不大,但林内乔木种类较退化刺槐林内丰富。因此利用间伐萌蘖方式对退化刺槐林改造是可行的
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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