高分~专业汉译英~多样性的海拔梯度格局

来源:百度知道 编辑:UC知道 时间:2024/09/27 21:24:48
戴云山植物物种α多样性的海拔梯度格局
摘要:选取有代表性的样方对戴云山的植被进行调查、数据输入与整理。通过α多样性测度的方法,来分析戴云山各物种随海拔变化的分布情况。准确反映戴云山植物的群落多样性特征。本次调查乔木层物种Simpson指数表现为双峰型,Shannon-Weaner指数在海拔900-1100m之间随海拔升高而逐渐升高,Pielou指数在海拔1500m处迅速下降;灌木层物种Simpson指数在海拔1300m处出现峰值,Shannon-Weaner指数和Pielou指数均呈现单峰型;草本层物种Simpson指数在海拔1700m处出现最大值,Shannon-Weaner指数呈高-低-高趋势,Pielou指数在1400m处出现最大值;维管束植物三个指数均呈现单峰型。
关键字:戴云山;α多样性;海拔梯度格局;物种多样性

速度~着急滴~明天中午12点前要~因为是毕业论文~所以语句要通顺~完成后追加50分~

Α Daiyunshan plant species diversity in the pattern of elevation gradient.
Abstract: The selected representative sample of the vegetation Daiyunshan investigation, data entry and collation. Through the method of α-diversity measure, to analyze the species Daiyunshan with the distribution of elevation changes. Daiyunshan accurately reflect the diversity of plant communities. In this survey, Simpson's index of tree layer species showed bimodal, Shannon-Weaner index between 900-1100m above sea level with a gradual increase in elevation. Pielou index decreased rapidly Department 1500m above sea level; shrub layer species at an altitude of Simpson's index 1300m peaks appeared, Shannon-Weaner index and Pielou's index showed single-peak type; Simpson index of herb layer species, occurring at an altitude of 1700m Max, Shannon-Weaner index was high - low - high trend, Pielou's index appeared in the 1400m maximum value; three index vascular plants showed a single peak.