高黎贡山赧亢亚高山草甸物种多样性研究

Study on species diversity of sub-alpine meadow of NanKang,GaoLiGongShan,Yunnan

采用1m^2样圆法,对高黎贡山赧亢亚高山草甸物种多样性进行了研究;11个样方调查研究数据表明,调查区草甸为杂草型草甸,可划分为大籽獐牙菜+龙牙草群落、黑穗画眉草+大籽獐牙菜群落两种群落类型;群落多样性指数分析得出,不同群落类型和同一群落类型丰富度、均匀度、多样性存在差异,多样性排序为(C4,C7,C8,C1,C11,C6,C2)>C9>C5>C10>C3;该草甸物种相对贫乏,群落结构较简单,群落稳定性较低;由于人为活动的减少,部分调查群落有向杂草类高草草甸演化的趋势。

In this article,species diversity about sub-alpine meadow of NanKang of GaoLiGongShan were reported by quadrat surveyed of 1 m^2 round.In investigated area, 11 quadrat surveyed data showed that sub-alpine meadow were weedy meadow.These communities were divided into two types of Swertia macrosperma ＋Agrimonia pilosa community and Eragrostis nigra＋Swertia macrosperma community. The index analysis of community diversity showed that richness and uniformity and diversity were also disaffinity in different community type and same community type. Its ordering outcomes of community diversity was （C4,C7,C8,C1,C11,C6,C2）〉C9〉 C5〉C10〉C3. In this meadow, its species was relatively poor, its community structure was relatively simple, its community stability was relatively lower too. Because of human activities decreasing, part surveyed communiies had showed a succession of which tended to weeds altoherbiprata.