| 围栏封育对沙化草地植被及土壤特性的影响 |
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| 引用本文： | 刘建,张克斌,程中秋,苏鹏飞,王黎黎.围栏封育对沙化草地植被及土壤特性的影响[J].水土保持通报,2011(4):180-184. |
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| 作者姓名： | 刘建 张克斌 程中秋 苏鹏飞 王黎黎 |
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| 作者单位： | 北京林业大学水土保持学院; |
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| 基金项目： | 国家自然科学基金项目“半荒漠地区湿地植被群落时空分布特征研究”(30771764); 国家林业局宁夏盐池荒漠化定位监测项目 |
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| 摘 要： | 对宁夏自治区盐池县不同围封类型的沙化草地植被以及土壤有关特性进行了分析研究。结果表明:(1)围栏封育使植物组成发生了明显变化。(2)适度的围封年限(<8 a)可以使群落盖度、平均密度、地上生物量以及物种多样性明显提高,过长的围封年限(>19 a)反而使各植被数量特征以及物种多样性呈现下降趋势。(3)围栏封育可以降低土壤容重,增加土壤孔隙度,提高土壤含水量。表明适度的围封年限既有利于植被的恢复,又有利于土壤特性的改良。但过长时间的围栏封育会导致植被结构和功能的退化以及草地生产力下降。
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| 关 键 词： | 围栏封育 沙化草地 植被数量特征 物种多样性 |
| 收稿时间： | 2011/1/11 0:00:00 |
| 修稿时间： | 2011/1/19 0:00:00 |
Influences of Fencing on Vegetation and Soil Properties in Sandy Grassland |
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| LIU Jian,ZHANG Ke-bin,CHENG Zhong-qiu,SU Peng-fei and WANG Li-li.Influences of Fencing on Vegetation and Soil Properties in Sandy Grassland[J].Bulletin of Soil and Water Conservation,2011(4):180-184. |
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| Authors: | LIU Jian ZHANG Ke-bin CHENG Zhong-qiu SU Peng-fei and WANG Li-li |
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| Institution: | LIU Jian,ZHANG Ke-bin,CHENG Zhong-qiu,SU Peng-fei,WANG Li-li(College of Soil and Water Conservation,Beijing Forestry University,Beijing 100083,China) |
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| Abstract: | The influences of different fencing types on vegetation and soil properties were studied in Yanchi County,Ningxia Hui Autonomous Region.The results showed that:(1) The plants composition was obviously changed;(2) Proper fencing periods(<8 a) made community coverage,density,aboveground biomass and species diversity obviously increase;excessive fencing periods(>19 a) could decrease vegetation quantitative feature and species diversity;(3) Fencing reduced the soil bulk density,increased the soil porosity and m... |
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| Keywords: | fencing sandy grassland vegetation quantitative feature species diversity |
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