A Study On Plant Diversity And Biomass Of Managed Meadows In The Tibetan Region, NW Yunnan, China.

The vast grassland resources in Northwestern Yunnan Province, Diqing Tibetan Prefecture, are the main living dependence for Tibetans there traditionally. But there have been few reports about the subalpine grasslands in this area, although a lot of research results on grasslands have achieved in other grassland regions through over China.The three types of managed meadows, grazing pasture, forage grassland, and cultivated grassland, at a Tibetan village, Dala, in Shangri-la County of Northwest Yunnan, were chosen to study, in order to discuss the influences of managed meadows on biomass and plant species diversity. The results are as follows:1) Flora characteristics. There are 170 species of seed plants that belong to 115 genera and 36 families are found in the three types of meadows. The majority of them are dicotyledon of angiosperm, including 139 species of seed plants that belong to 89 genera and 30 families. Of which, 31 species belong to 26 genera and 6 families of monocotyledon. 1 species belongs to the pteridophyta only. At family level, the floristic components showed temperate zone characteristics, add in some of tropical characteristics. At genus level, it contains 11 kinds of 15 areal–types and subtypes, showing the various floristic components.2) Character of plant community. The plant community and companion species vary under different uses in different seasons. The low similarity of...