| 任洪玉,温仲明,杨勤科.黄土沟壑区植被恢复及其物种多样性的变化——以吴旗县植被恢复为例[J].干旱地区农业研究,2003,(2):154~158 |
| 黄土沟壑区植被恢复及其物种多样性的变化——以吴旗县植被恢复为例 |
| The re-vegetation and changes in species diversity in hilly and guly regions on loess plateau — As seen by the case study in Wuqi county |
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| DOI：10.7606/j.issn.1000-7601.2003.02.34 |
| 中文关键词: 植被恢复 物种多样性 黄土沟壑区 |
| 英文关键词:vegetation restoration species diversity 5 hilly and gully regions on loess plateau |
| 基金项目:中国科学院知识创新工程重要方向项目“黄土高原水土保持区域生态环境效应研究”(KZCX3-SW-421)； 中国科学院“西部之光”人才培养计划项目； 中国环境与发展国际合作委员会退耕还林(草)调查项目 |
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| 中文摘要: |
| 在对吴旗县自然恢复植被群落和人工植被群落调查的基础上,对其物种多样性进行分析研究,结果表明,在自然恢复初期和处于演替平衡阶段的群落,其物种生物多样性指数和均匀度指数均较高,但丰富度指数的峰值出现在演替中间阶段;灌木群落的生物多样性要大于草本群落的多样性。超过一定年限的灌木群落,表现出一定程度的衰败,生物多样性下降;物种多样性可以间接对植被群落的保水保土功能进行评价,但必须综合考虑物种的丰富度与空间分布的均匀度。 |
| 英文摘要: |
| On the base of the research on natural and man-established vegetation communities in Wuqi county, the species diversity of those communities were analyzed. The results show that the communities at early and balanced stages of natural restoration had a higher diversity and evenness index, yet the peak value of abundance index appeared in the middle stage of the succession. The species diversity of bush communities was higher than grass communities while it decreased after a fixed number of year and the bush communities degraded to certain degree. Species diversity can be used to estimate the vegetation's functions in conserving soil and water indirectly, but when estimated, species abundance and evenness in spatial distribution should be taken into consideration. |
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