| 林区啮齿动物群落管理中的生态阈值研究 |
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| 引用本文： | 韩崇选,杨学军,王明春,卜书海,张宏利,杨清娥.林区啮齿动物群落管理中的生态阈值研究[J].西北林学院学报,2005,20(1):156-161. |
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| 作者姓名： | 韩崇选 杨学军 王明春 卜书海 张宏利 杨清娥 |
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| 作者单位： | 西北农林科技大学,林学院,陕西,杨陵,712100 |
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| 基金项目： | 国家“十五”科技攻关课题(2001BA509B07 2 02)，国家林业局“黄土高原林木培育实验室”资助 |
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| 摘 要： | 以人工林生态系统中的啮齿动物群落和主要造林树种为研究对象,提出了人工林群落生态阈值概念.采用系统分析法,组建了刺槐、油松、侧柏被害模型和飞播造林30 d种子损失模型,并以国家及地方标准的最大允许损失指标偶联求得林区啮齿动物群落管理中的生态阈值模型.结果表明,群落总密度和地面鼠的单因子群落生态阈值刺槐最大,油松次之,侧柏最小;鼢鼠和田鼠在高允许损失率下为刺槐＞油松＞侧柏,而在低允许损失率下为油松＞侧柏＞刺槐;草兔为油松最大,侧柏最小;飞播造林中的单因子群落生态阈值不仅决定于地面鼠的总密度,而且还决定于群落各
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| 关 键 词： | 啮齿动物 群落结构 群落管理 允许损失率 生态阈值 |
| 文章编号： | 1001-7461(2005)01-0156-06 |
| 修稿时间： | 2003年6月18日 |
A Study on the Ecological Threshold in the Forest Bandicoot Community Management |
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| HAN Chong-xuan,YANG Xue-jun,WANG Ming-chun,BO Shu-hai,ZHANG Hong-li,YANG Qing-e.A Study on the Ecological Threshold in the Forest Bandicoot Community Management[J].Journal of Northwest Forestry University,2005,20(1):156-161. |
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| Authors: | HAN Chong-xuan YANG Xue-jun WANG Ming-chun BO Shu-hai ZHANG Hong-li YANG Qing-e |
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| Abstract: | Taking the rodent community and major afforestation tree species in artificial forest system as research objects, the concept of ecological threshold of artificial forest community was put forward. Injuring models of silver chain, Chinese pine and arborvitae and seed losing models of aero-afforestation in 30 d were constructed. The ecological threshold model for managing rodent community in artificial forest ecosystem was established by coupling the local and state permeable maximum losing indices. The result showed that the ecological thresholds of the total community density and single community of sub-aerial rodents in silver chain are the highest, and then in Chinese pine and arborvitae. Under the highest pemeable losing rate, ecological thresholds of zokor and hedgeshrew were in the order of silver chain>Chinese pine>arborvitae, but in the order of Chinese pine>arborvitae>silver chain under the lowest permaeble losing rate. The ecological threshold of the single community in aero-afforested forests not only determined the total density of sub-aerial rodent, but also determined the composition of each component with the community, especially the density of squirrel and hedgeshrew. The predicted values of the injury rates in the Qinling mountainous area and the natural secondary forests in Qiaoshan were lower than the maximum permeable losing rate applied in conventional afforestation, but reversible in the rest forest area studied. |
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| Keywords: | rodent community structure community management tolerated losing rate ecological threshold |
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