| 森林生态系统健康评估Ⅱ.案例实践 |
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| 引用本文： | 王艳荣,赵利清,邵元虎.森林生态系统健康评估Ⅱ.案例实践[J].生态学杂志,2005,24(1):1-6. |
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| 作者姓名： | 王艳荣 赵利清 邵元虎 |
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| 作者单位： | 1. 中国科学院沈阳应用生态研究所, 沈阳, 110016;2. 北京师范大学环境学院, 北京, 100875;3. 中国科学院生态环境研究中心, 北京, 100085 |
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| 基金项目： | 内蒙古草地生态学重点实验室基金资助项目 |
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| 摘 要： | 结合样地调查和他人对阔叶红松林生态系统相关指标的研究资料数据,利用健康距离(HD)评估法和上文建立的阔叶红松林生态系统健康评估指标体系框架,对不同人为干扰影响的长白山阔叶红松林生态系统进行系统健康的评估实践.结果按顺序依次为20%强度择伐林0.21<50%强度择伐林0.44<白桦中成林0.67<白桦中幼林0.72<红松人工林0.74<人工落叶松林0.77.
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| 关 键 词： | 生态系统健康 评估 阔叶红松林 健康距离 |
| 文章编号： | 1000-4890(2005)01-0001-05 |
| 收稿时间： | 2004-01-09 |
| 修稿时间： | 2003年7月2日 |
Comparative analysis of the drought-resistances for turfgrass and main weeds in the temperate semi-arid region |
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| WANG Yanrong,ZHAO Liqing,SHAO Yuanhu.Comparative analysis of the drought-resistances for turfgrass and main weeds in the temperate semi-arid region[J].Chinese Journal of Ecology,2005,24(1):1-6. |
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| Authors: | WANG Yanrong ZHAO Liqing SHAO Yuanhu |
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| Institution: | 1. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;2. School of Environinent, Beijing Normal University, Beijing 100875, China;3. Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China |
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| Abstract: | The wilting coefficients and the survival days of turfgrass (Poa pratensis) and 6 main weeds (Viola prionantha,Digitaria ischaemum,Geranium sibiricum,Potentilla anserine,Inula britanica and Potentilla supina) in the temperate semi-arid region were measured under drought stress and the drought-resistances were compared according to the soil water depleted index (SWDI).The results showed that the wilting coefficient of Digitaria ischaemum was the lowest,then Poa pratensi the second,and that of Inula britanica was the highest.The wilting coefficients of Poa pratensis,Digitaria ischaemum were remarkably different from that of Inula britanica and Geranium sibiricum.The physiological drought-resistances of the seven species were in the order of Poa pratensis> Digitaria ischaemum> Potentilla supina> Potentilla anserina> Viola prionantha> Geranium sibiricum> Inula britanica. |
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| Keywords: | turfgrass weeds wilting coefficient drought-resistances |
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