CAJ | 학술논문

分析新疆阿尔泰山小东沟北坡植物多样性随海拔梯度的变化规律.结果表明:小东沟山区总体上物种种类简单,物种丰富度指数和Shannon-Wiener多样性指数均表现为:乔木层＜灌木层＜草本层;乔木层和灌木层的物种丰富度和Shannon-Wiener多样性指数均沿海拔上升表现为先升高再降低的单峰趋势,即中间高度膨胀,且多样性峰值均出现在海拔1 600～1 800 m处;草本层的物种丰富度和Shannon-Wiener多样性指数均沿海拔升高,略微有所上升,变化不明显;乔、灌、草总的物种丰富度和Shannon-Wiener多样性指数沿海拔上升均呈现先增加后降低的单峰趋势.针阔叶混交林具有较高的物种多样性,从而使海拔1 600～1 700 m处出现乔木层、灌木层及总的物种多样性峰值.随海拔升高,林分郁闭度减少,从而使得林下草本多样性有所增加.
분석신강아이태산소동구북파식물다양성수해발제도적변화규률.결과표명:소동구산구총체상물충충류간단,물충봉부도지수화Shannon-Wiener다양성지수균표현위:교목층＜관목층＜초본층;교목층화관목층적물충봉부도화Shannon-Wiener다양성지수균연해발상승표현위선승고재강저적단봉추세,즉중간고도팽창,차다양성봉치균출현재해발1 600～1 800 m처;초본층적물충봉부도화Shannon-Wiener다양성지수균연해발승고,략미유소상승,변화불명현;교、관、초총적물충봉부도화Shannon-Wiener다양성지수연해발상승균정현선증가후강저적단봉추세.침활협혼교림구유교고적물충다양성,종이사해발1 600～1 700 m처출현교목층、관목층급총적물충다양성봉치.수해발승고,림분욱폐도감소,종이사득림하초본다양성유소증가.
Patterns of species diversity along the altitude on the northern slope of Xiaodonggou in the Ahai mountains were explored.The results indicated that:the vegetation structure and composition were generally simple,and the diversity was low.Diversity order of the following three life forms was:trees＜shrubs＜herbaceous plants.Diversities of trees and shrubs exhibited a unimodal pattern with increasing altitude,peaking at the range of 1 600 m-1 800 m.The herbaceous plant diversity exhibited a monotonically increasing trend with the increase of altitude.Change in total diversity of the three life forms along the altitudinal gradient showed a unimodal pattern.Mixed coniferous broad-leaved forest (1 600 m-1 700 m) had higher species diversity,where peak values for trees,shrubs,and total species diversity appeared.In the study area,tree crown density decreased along the altitudinal gradient,so that the diversity of herbaceous plants had an increasing trend along the altitudinal gradient accordingly.