| 不同沙化高寒草地植物群落结构特征及土壤理化特性研究 |
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| 引用本文： | 聂学敏,芦光新,鲁子豫,祁佳丽,马燕,张妹婷.不同沙化高寒草地植物群落结构特征及土壤理化特性研究[J].草原与草坪,2016(4):73-77. |
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| 作者姓名： | 聂学敏 芦光新 鲁子豫 祁佳丽 马燕 张妹婷 |
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| 作者单位： | 1. 青海省生态环境遥感监测中心,青海 西宁,810007;2. 青海大学 农牧学院,青海 西宁,810016 |
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| 基金项目： | 科技促进新农村计划项目“三江源生态监测与评估关键技术研究与示范”(2013-N-534)，国家自然科学基金“青藏高原草地耐低温纤维素分解真菌多样性研究”(41261064) |
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| 摘 要： | 以青海省治多县轻度沙化和重度沙化草地为研究对象,对其植被群落特征和土壤理化性状进行了调查。结果表明:随着草地沙化程度的加剧,草地植物群落结构(如群落优势种等)发生了明显的变化,群落盖度、生物量均明显下降(P0.01),植被高度反而上升(P0.01)。而通过保护与综合治理,重度沙化草地物种数、多样性指数、均匀性指数却大于轻度沙化草地。同时,随着草地沙化程度的加剧,土壤养分在0~15cm水平上明显下降(P0.01),而在15~30cm水平上变化不明显。
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| 关 键 词： | 沙化草地 植被群落 生态恢复 多样性 |
Study on plant community structure and soil physical and chemical characteristics in different desertification Alpine Steppe |
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| NIE Xue-min,LU Guang-xin,LU Zi-yu,QI Jia-li,MA Yan,ZHANG Mei-ting.Study on plant community structure and soil physical and chemical characteristics in different desertification Alpine Steppe[J].Grassland and Turf,2016(4):73-77. |
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| Authors: | NIE Xue-min LU Guang-xin LU Zi-yu QI Jia-li MA Yan ZHANG Mei-ting |
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| Abstract: | Structure characteristics of plant community and soil physical and chemical properties were inves-tigated in mild desertificated and severe desertificated grassland of Zhiduo County.The result showed that the dominant species in vegetation community had significantly changed with the increase of desertification,the cov-er and aboveground biomass decreased with the increase of desertification(P<0.01),however,the plant height increased.The species number,diversity index and the evenness index in severe desertificated grassland were higher than that of light desertificated grassland.Meanwhile,the soil nutrient at the 0~1 5 cm significantly de-creased with increase of grassland desertification (P<0.01),while it did not obviously changed at 15~30 cm. |
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| Keywords: | desertification grassland plant community ecology restoration diversity |
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