Influences of Fencing on Vegetation and Soil Properties in Sandy Grassland

LIU Jian; ZHANG Ke-bin; CHENG Zhong-qiu; SU Peng-fei; WANG Li-li

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Influences of Fencing on Vegetation and Soil Properties in Sandy Grassland

- Influences of Fencing on Vegetation and Soil Properties in Sandy Grassland
- Bulletin of Soiland Water Conservation Vol. 30, Issue 4, Pages: 180-184(2011)
- 作者机构：
  
  北京林业大学水土保持学院,北京,100083
- 作者简介：
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- Published：2011
- 稿件说明：
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LIU Jian, ZHANG Ke-bin, CHENG Zhong-qiu, et al. Influences of Fencing on Vegetation and Soil Properties in Sandy Grassland[J]. Bulletin of Soiland Water Conservation, 2011, 30(4): 180-184.
DOI：

LIU Jian, ZHANG Ke-bin, CHENG Zhong-qiu, et al. Influences of Fencing on Vegetation and Soil Properties in Sandy Grassland[J]. Bulletin of Soiland Water Conservation, 2011, 30(4): 180-184. DOI：

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。

Abstract

The influences of different fencing types on vegetation and soil properties were studied in Yanchi County

Ning xia Hui Autonomous Region.The results showed that:(1)The plants composition was obviously changed;(2)Proper fencing periods(<8a)made community coverage

density

aboveground biomass and species diversity obviously increase;excessive fencing periods(> 19a)could decrease vegetation quantitative feature and species diversity;(3)Fencing reduced the soil bulk density

increased the soil porosity and moisture.Therefore

proper fencing periods were good for plant restoration and soil melioration

excessive fencing periods resulted in the degradation of vegetation structure and function

and the decline of grassland productivity.

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