宾川县乌龙坝亚高山草甸植物多样性调查研究

采用样方调查法，对宾川县乌龙坝草甸进行植物多样性调查，共记录到维管束植物148种，隶属51科112属（含变种），其中唇形科、豆科、禾本科及菊科的属数较多，菊科的属数高达15种；种数在5种以上的科有8个，分别为唇形科、豆科、禾本科、菊科、毛茛科、蔷薇科、伞形科及莎草科；寡种单种的科数量较多，是草甸植物种类的重要组成部分；菊科、禾本科、莎草科等植物是草地群落的重要组成种，西南野古草、蕨和糙野青茅的重要值最高，分别为13.651、5.431、4.163。研究结果表明，该区域植物属的地理成分可划分为10个类型2个变型，以北温带分布成分为主，占比达37.26%。该草甸植物物种丰富度及多样性较高，物种丰富度最高值达45，Simpson指数和Shannon-Wiener指数分别达0.908和2.921；总体上低海拔区域物种丰富度和多样性相对较高。

Plant Diversity of Subalpine Meadow in Wulongba of Binchuan County

According to the quadrat survey, 148 species of vascular plants were recorded in Wulongba meadow of Binchuan County, belonging to 112 genera and 51 families (including varieties). The number of genera was large in Lamiaceae, Fabaceae, Poaceae and Asteraceae, with a total of 15 genera in Asteraceae; there were 8 families with species more than 5, including Lamiaceae, Fabaceae, Poaceae, Asteraceae, Ranunculaceae, Rosaceae, Apiaceae and Cyperaceae; most families only had few species or single species, which was the important part of meadow plant species; Asteraceae, Poaceae, Cyperaceae and other plants were important components of grassland community; the important values of Arundinella hookeri, Pteridium aquilinum var. latiusculum and Deyeuxia scabrescens were the highest, 13.651, 5.431 and 4.163 respectively. The results showed that the geographical composition of the genera could be divided into 10 types and 2 forms, with 37.26% in the north temperate zone. The plant species richness and diversity of the meadow were high, the highest value of species richness was 45, and Simpson index and Shannon Wiener index were 0.908 and 2.921 respectively; in general, species richness and diversity were relatively high in low altitude areas.