[1]韩崇选,张放,李惠萍,等.退耕还林不同整地方式油松林地鼢鼠种群动态研究[J].西北林学院学报,2010,25(04):120-126.
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退耕还林不同整地方式油松林地鼢鼠种群动态研究
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第25卷
期数:
2010年04期
页码:
120-126
栏目:
OA
出版日期:
2010-07-31

文章信息/Info

作者:
韩崇选;张放;李惠萍;杨清娥;
西北农林科技大学林学院;
关键词:
黄土高原退耕还林整地方式鼢鼠种群动态
摘要:
研究结果证明,整地造林初期,鼢鼠密度有一个上升过程,从反坡梯田到穴状整地,上升幅度递降,持续时间渐短。造林后,反坡梯田和水平沟的鼢鼠密度明显高于初期值,水平阶和水平带状的整体高于初始值,鱼鳞坑和穴状整地的整体小于初始值。带状整地造林后2~5 a,鼢鼠种群增长率大于零,极值出现以后,增长率随着林木的生长迅速降低,5 a以后,种群出现负增长。鱼鳞坑和穴状整地,增长率第2年最大,3 a以后,种群出现负增长。从反坡梯田到穴状整地,鼢鼠密度的时间正效应逐步转化成负效应,环境异质效应逐渐显现。

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备注/Memo

备注/Memo:
国家科技支撑计划,2006BAD08A1004
更新日期/Last Update: 2010-08-20