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Position: Home > Articles > Study of Effect on Disturbance to Grassland Vegetation and Soil Chinese Agricultural Science Bulletin 2008,24 (5) 8-16

干扰对草地植被与土壤的影响之研究进展

作  者:
刘昊;赵宁;曹喆;戎郁萍
单  位:
中国农业大学动物科技学院
关键词:
草地植被;草地土壤;干扰
摘  要:
从干扰作用机制和干扰引起生态系统异质性2方面详细阐述了干扰的研究进展。论述了干扰作用形成的2个假说——中等强度干扰假说和干扰频率假说,并从中等强度干扰假说的2个基本假定说明了中等强度干扰假说的具体理论研究。在干扰对草地植被和土壤的作用方面,重点叙述了火烧、刈割和施肥3方面的干扰,从火烧后植物群落生产力及其产量空间结构、植物养分和草原植物对火的耐受力3方面阐明了火烧干扰对植被的作用研究;火烧干扰对土壤物理性质、化学性质和土壤火烧后细菌、真菌、放线菌的变化及微生物总数和微生物生物量的变化和刈割干扰对土壤种子库和土壤性质的变化。
译  名:
Study of Effect on Disturbance to Grassland Vegetation and Soil
作  者:
Liu Hao,Zhao Ning,Cao Zhe,Rong Yuping (China Agricultural University,Animal Science and Technology College,Beijing 100094)
关键词:
grassland vegetation,grassland soil,disturbance
摘  要:
The mechanism of disturbance and ecosystem heterogeneity caused by disturbance about progress in disturbance were expounded by introducing two hypothesis in disturbance: Intermediate disturbance hypothesis and disturbance frequency hypothesis,and explaining the detailed theoretical study of the intermediate disturbance hypothesis in two basic hypothesis in terms of study progress in disturbance of grassland vegetation and soil effect.By emphasizing on burning disturbance,mowing disturbance,fertilizing disturbance,changes in productivity of plant community and yielding spatial structure after burning,changes in plant nutrient after burning and grassland plant tolerance to burning was expounded in burning disturbance effect to the vegetation;changes of soil physical nature,chemical nature and changes in soil bacterial,fungus,actinomycetes after burning disturbance,and changes of the number and biomass of microorganism,changes in soil seed bank and soil nature after mowing disturbance.

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