现代农业科技
現代農業科技
현대농업과기
XIANDAIHUA NONGYE
2011年
13期
189-190,194
,共3页
物种组成%生活型%径级%多样性%漫湾库区
物種組成%生活型%徑級%多樣性%漫灣庫區
물충조성%생활형%경급%다양성%만만고구
species composition%life form%DBH%biodiversity%Manwan Reservoir
通过样方法对漫湾库区周边的常绿阔叶林群落多样性进行研究,结果表明:在漫湾库区周边的常绿阔叶林群落样地内维管束植物100种,隶属于44科。蕨类植物共3科3种,种子植物有41科、97种。含种数最多的科是山茶科,其次是樟科,含单种的科有28科,占科总数的63.64%。乔木层中山茶科和樟科的种占据优势,其重要值之和为57.6%;灌木层山茶科和壳斗科占据优势,其重要值之和是34.5%。群落生活型小高位芽植物种类最多,占总种数的43.7%,矮高位芽植物占34.8%,地面芽植物很少,只占总种数的0.3%。群落中大径级的植物优势不十分明显,多数种类在中小径级范围有较多的分布。灌木层的Shannon-Weiner指数、Simpson指数和Margalef指数均比乔木层和草本层的大,从灌木层、乔木层到草本层的多样性指数呈下降趋势。
通過樣方法對漫灣庫區週邊的常綠闊葉林群落多樣性進行研究,結果錶明:在漫灣庫區週邊的常綠闊葉林群落樣地內維管束植物100種,隸屬于44科。蕨類植物共3科3種,種子植物有41科、97種。含種數最多的科是山茶科,其次是樟科,含單種的科有28科,佔科總數的63.64%。喬木層中山茶科和樟科的種佔據優勢,其重要值之和為57.6%;灌木層山茶科和殼鬥科佔據優勢,其重要值之和是34.5%。群落生活型小高位芽植物種類最多,佔總種數的43.7%,矮高位芽植物佔34.8%,地麵芽植物很少,隻佔總種數的0.3%。群落中大徑級的植物優勢不十分明顯,多數種類在中小徑級範圍有較多的分佈。灌木層的Shannon-Weiner指數、Simpson指數和Margalef指數均比喬木層和草本層的大,從灌木層、喬木層到草本層的多樣性指數呈下降趨勢。
통과양방법대만만고구주변적상록활협림군락다양성진행연구,결과표명:재만만고구주변적상록활협림군락양지내유관속식물100충,대속우44과。궐류식물공3과3충,충자식물유41과、97충。함충수최다적과시산다과,기차시장과,함단충적과유28과,점과총수적63.64%。교목층중산다과화장과적충점거우세,기중요치지화위57.6%;관목층산다과화각두과점거우세,기중요치지화시34.5%。군락생활형소고위아식물충류최다,점총충수적43.7%,왜고위아식물점34.8%,지면아식물흔소,지점총충수적0.3%。군락중대경급적식물우세불십분명현,다수충류재중소경급범위유교다적분포。관목층적Shannon-Weiner지수、Simpson지수화Margalef지수균비교목층화초본층적대,종관목층、교목층도초본층적다양성지수정하강추세。
This paper studied biodiversity of the evergreen broad-leaved forest near Manwan Reservoir using quadrat method.The results were as follows:there were 100 vascular plants which belonged to 44 families.Three families of ferns had three species.Seed plants had 41 families,97 species.Theaceae had the most,and Lauraceae was the next.The families which had single species had 28,and 63.64% of the total of families.Theaceae and Lauraceae on the arbor layer were dominant families,the important value was 57.6%;The shrub layer Theaceae and Fagaceae were dominant,the important value was 34.5%.The small high bud plant species were the most,namely 43.7%,the short of high bud plants was 34.8%.Only 0.3% of the total species was hemicryptophyta.The large diameter levels of plants were not significant,and most of DBH concentrate the middle and small diameter levels.Shannon-Weiner index,Simpson index and Margalef index of the shrub layer were more than arbor layer and herb layer.It meant that the biodiversity declined from shrub layer,arbor layer to herb layer.