放牧对锡林郭勒典型草原退化影响初探 |
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引用本文: | 贾晔.放牧对锡林郭勒典型草原退化影响初探[J].内蒙古气象,2012(4):17-19. |
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作者姓名: | 贾晔 |
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作者单位: | 丰镇市气象局,内蒙古丰镇,012100 |
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摘 要: | 文章利用1952-2006年实际调查资料对围封和放牧条件下典型草原地上生物量、植物群落组成、数量特征、土壤含水量等进行对比分析,结果表明:与围封样地比较,放牧草场土壤下层水分明显减少,0~100cm土层水分减少12.5mm;植被生产能力下降,羊草和针茅的高度分别下降4.2%和5.2%,生物量减少14.9%和32.1%,群落总生物量下降29.2%,LAI减小22.2%.群落组成结构发生变化,多样性指数降低14.8%,退化现象比较明显.
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关 键 词: | 放牧 草场退化 典型草原 围封 |
Discussion on the Influence of Pasturing on Degradation of Typical Grassland in Xilin Gol League |
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Authors: | Jia Ye |
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Institution: | Jia Ye (Fengzhen Meteorological Burean,Inner Mongolia Fengzhen 012100) |
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Abstract: | Using the actual survey data,the overground biomass,plant community composition,quantitative characteristics,soil water content of enclosure and grazing grassland were compared and analyzed,the results showed that: with the enclosed sample comparison of grazing grassland,soil moistures was reduced obviously,0-100 cm soil moisture reduction of 12.5mm;vegetation production capacity of Leymus chinensis and Stipa,height drops respectively 4.2% and5.2%,biomass decreased14.9% and32.1%,the community total biomass decreased 29.2%,22.2% reduction of LAI.Community composition and structure change,diversity index decreased 14.8%,degradation phenomenon more obvious. |
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Keywords: | typical grassland biomass degradation |
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