青海农林科技
青海農林科技
청해농림과기
SCIENCE AND TECHNOLOGY OF QINGHAI AGRICULTURE AND FORESTRY
2012年
1期
1-4
,共4页
青海湖景区%旅游干扰%α多样性%功能群%β多样性%沙化草地
青海湖景區%旅遊榦擾%α多樣性%功能群%β多樣性%沙化草地
청해호경구%여유간우%α다양성%공능군%β다양성%사화초지
Qinghai Lake Scenic Area%Tourist Disturbance%α diversity%Functionel group%β diversity%Desertified grassland
研究青海湖景区旅游干扰下沙化草地群落的植物多样性,利用主要物种重要值、α多样性、功能群重要值和β多样性比较分析不同干扰后群落植物多样性及结构功能的变化。结果表明：随着干扰强度的增加,群落物种组成从以不耐旅游干扰的物种为主逐渐发展到以耐旅游干扰的物种为主,群落的重要值有向少数物种集中的趋势;Pat-rick丰富度指数和Shannon-Wiener指数均随着干扰强度的增加而呈下降趋势,均匀度指数则在中度干扰下最大,生态优势度的变化与α多样性的变化存在一定的负关联;功能群丰富度在中度干扰下最高;中度-重度干扰阶段群落间的物种替代速率最快。青海湖景区沙化草地群落稳定与群落自身的物种多样性、功能群功能特性及结构特点密切相关。
研究青海湖景區旅遊榦擾下沙化草地群落的植物多樣性,利用主要物種重要值、α多樣性、功能群重要值和β多樣性比較分析不同榦擾後群落植物多樣性及結構功能的變化。結果錶明：隨著榦擾彊度的增加,群落物種組成從以不耐旅遊榦擾的物種為主逐漸髮展到以耐旅遊榦擾的物種為主,群落的重要值有嚮少數物種集中的趨勢;Pat-rick豐富度指數和Shannon-Wiener指數均隨著榦擾彊度的增加而呈下降趨勢,均勻度指數則在中度榦擾下最大,生態優勢度的變化與α多樣性的變化存在一定的負關聯;功能群豐富度在中度榦擾下最高;中度-重度榦擾階段群落間的物種替代速率最快。青海湖景區沙化草地群落穩定與群落自身的物種多樣性、功能群功能特性及結構特點密切相關。
연구청해호경구여유간우하사화초지군락적식물다양성,이용주요물충중요치、α다양성、공능군중요치화β다양성비교분석불동간우후군락식물다양성급결구공능적변화。결과표명：수착간우강도적증가,군락물충조성종이불내여유간우적물충위주축점발전도이내여유간우적물충위주,군락적중요치유향소수물충집중적추세;Pat-rick봉부도지수화Shannon-Wiener지수균수착간우강도적증가이정하강추세,균균도지수칙재중도간우하최대,생태우세도적변화여α다양성적변화존재일정적부관련;공능군봉부도재중도간우하최고;중도-중도간우계단군락간적물충체대속솔최쾌。청해호경구사화초지군락은정여군락자신적물충다양성、공능군공능특성급결구특점밀절상관。
Desertified grassland in Qinghai Lake Scenic Spot interference of plant diversity,use of the important value of the major species,α diversity,the important value of the functional group and β diversity analysis of community plant diversity and structure and function changes after different disturbances.The results show that：with increasing disturbance intensity,species composition from to intolerance travel interfere with the species gradually developed resistance to tourism disturbance of the species-based,community values are concentrated to a small number of species trends;by Pat-rick richness index and Shannon-Wiener index showed a downward trend with increasing disturbance intensity,evenness index in moderate interference,changes of the ecological advantages and α diversity change there is a certain negative correlation;functional group richness in moderate interference;moderate-severe interference between the stages of community species replacement rate is the fastest.Qinghai Lake desertified grassland community stability is closely related to the community＇s own diversity,and functional properties and structural features of the functional groups.
