坡面植被恢复过程中植被与土壤特征评价

为了加快建设工程损毁立地植被群落正向演替,探究土壤特性与植被生长效果的响应关系,选取北京市延庆县上辛庄水土保持科技示范园20个典型绿化护坡小区为评价单元,运用主成分分析及聚类分析法在求得各护坡小区综合评价得分的基础上,将20个护坡小区划分为3类.采用 Margalef 指数、Pielou 指数、Simpson 指数和Shannon-Wiener 指数评价了3类护坡小区植被群落年际分异特征,并构建了5种模式的植被-土壤环境耦合度及其预测模型.结果表明：1）坡面植被恢复过程中以土质边坡为主的护坡小区植被恢复效果普遍优于岩质边坡组成的护坡小区.2）随着年份的增加,3类护坡小区物种多样性指数增大,变异...

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Published in农业工程学报 Vol. 29; no. 3; pp. 124 - 131
Main Author 张艳 赵廷宁 史常青 吴海龙 李丹雄 孙永康
Format Journal Article
LanguageChinese
Published 北京林业大学水土保持学院,北京 100083 2013
Subjects
土壤
护坡小区
植被
模型
耦合
评价
evaluation
slope protection districts
models
coupling
评价
护坡小区
植被
模型
vegetation
soils
耦合
土壤
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ISSN1002-6819
DOI10.3969/j.issn.1002-6819.2013.03.017

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Summary:为了加快建设工程损毁立地植被群落正向演替,探究土壤特性与植被生长效果的响应关系,选取北京市延庆县上辛庄水土保持科技示范园20个典型绿化护坡小区为评价单元,运用主成分分析及聚类分析法在求得各护坡小区综合评价得分的基础上,将20个护坡小区划分为3类.采用 Margalef 指数、Pielou 指数、Simpson 指数和Shannon-Wiener 指数评价了3类护坡小区植被群落年际分异特征,并构建了5种模式的植被-土壤环境耦合度及其预测模型.结果表明：1）坡面植被恢复过程中以土质边坡为主的护坡小区植被恢复效果普遍优于岩质边坡组成的护坡小区.2）随着年份的增加,3类护坡小区物种多样性指数增大,变异系数减小,植被演替愈加剧烈.3）植被恢复5 a 后,植被-土壤耦合协调程度不是十分理想,以土质边坡为主的护坡小区处于中级协调发展阶段,岩质边坡组成的护坡小区仅处于初级协调发展阶段.该研究可为建设工程损毁立地边坡植被恢复提供参考依据.
Bibliography:11-2047/S
Zhang Yan, Zhao Tingning, Shi Changqing, Wu Hailong, Li Danxiong, Sun Yongkang （School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China）
In recent years, the implementation of the development and construction projects has destroyed original ecological barrier, which results in a series of environmental problems, such as water losses and soil erosion, landslide, vegetation coverage degradation and diversity of species decrease, which will endanger human life and property safety. It is urgent and necessary to figure out the relationship between soil properties and vegetation growth, based on which measures can be designed and conducted to maintain stability and sustainable development of natural environment, as well as to recover or reconstruct the sites impaired by construction projects, and then keep life and property from threat damaged. In this study, 20 typical slope protection districts in Soil and Water Conservation Science and Technology Demonstration Park in Sh
ISSN:1002-6819
DOI:10.3969/j.issn.1002-6819.2013.03.017