摘要
采用样方法对不同生境中地木耳分布规律进行了研究;分析了地木耳的群落特征及其生物量,结果表明:①群落种类组成,共有38种,34属,21科,单科单种14种;②群落垂直结构简单,只有灌木层、草本层和地被层;③地木耳平均生物量为10kg/hm2,干重7.3kg/hm2,湿重140kg/hm2;④地木耳的自然含水量42%,持水量18.6%,在海拔600~800m之间,地木耳生物量最大;⑤地木耳与白羊草、针茅的分布具有一致性。
The distrbution regularity of Nostoc commune in different living environments was studied by using the plot method.The community feature and biomass of the Nostoc commune community were analyzed.The results showed:(1) the specific composition of Nostoc commune community is 38 species,34 genera,21 families and 14 mon family mon species;(2) the vertical structure of the community is the shrub layer and grass layer and cover plant layer;(3) average biomass of it is 10 kg/hm 2,and dry weight 7 3 kg/hm 2 and wet weight 140 kg/hm 2;(4) natural water content of it is 42% and water holding capacity 18 6%.The biomass is the largest in altitude 600 ̄800 m;and (5) Nostoc commune consists with Bochriobloa ischaemum and Stipa in the distribution.
出处
《武汉植物学研究》
CSCD
1999年第3期239-243,共5页
Journal of Wuhan Botanical Research
基金
山西省教委基金
关键词
地木耳
群落特征
资源分布
定量分析
Nostoc commune , Community feature, Resource distribution, Quantitative analysis