| 不同封育年限对盐池县植被多样性及生物量的影响研究 |
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| 引用本文： | 曹永翔,张克斌,王海星,杨秀莲.不同封育年限对盐池县植被多样性及生物量的影响研究[J].林业调查规划,2009,34(4):8-11,18. |
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| 作者姓名： | 曹永翔 张克斌 王海星 杨秀莲 |
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| 作者单位： | 北京林业大学水土保持学院水土保持与荒漠化防治教育部重点实验室,北京,100083 |
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| 基金项目： | 国家自然科学基金，国家林业局宁夏盐池荒漠化定位监测项目 |
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| 摘 要： | 在宁夏自治区盐池县人工封育区采用样方调查法对不同封育年限封育区植被的群落结构和生物量进行调查分析，并运用丰富度指数（R）、均匀度指数（E）和综合性多样性指数（Y）分析生物多样性变化．结果表明：大部分优势植物种在封育第4、第5年重要值最大，随着封育时间增加，重要值降低；多样性指数变化不明显，表明长期完全封育对于植物物种多样性的恢复效果不显著；封育第3～7年地表出现结皮，有毒植物生物量降低，总的地上生物量也呈降低的趋势，说明长期封育并不能提高草场的生产力．
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| 关 键 词： | 封育时间 植物多样性 生物量 盐池县 |
Influence of Different Enclosure Period on Plant Diversity and Biomass of Yanchi County |
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| CAO Yong-xiang,ZHANG Ke-bin,WANG Hai-xing,YANG Xiu-lian.Influence of Different Enclosure Period on Plant Diversity and Biomass of Yanchi County[J].Forest Inventory and Planning,2009,34(4):8-11,18. |
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| Authors: | CAO Yong-xiang ZHANG Ke-bin WANG Hai-xing YANG Xiu-lian |
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| Institution: | College of Soil and Water Conservation;Beijing Forestry University;Key Laboratory of Soil and Water Conservation and Desertification Combating of the Ministry of Education;Beijing 100083;China |
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| Abstract: | Applying quadrat method,the vegetation of Yanchi county of Ningxia Ningxia Hui Autonomous Region was investigated to study the influence of different fencing time on community structure and biomass.The change of biodiversity was analyzed by using richness indexes(R),evenness indexes(E) and comprehensive diversity indexes(Y).The results showed that the highest important value of most dominant species occurred on the 4th and 5th year after fencing,then the importance value decreased as the increasing of fenci... |
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| Keywords: | fencing time plant diversity biomass Yanchi county |
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