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FOREST RESOURCES WANAGEMENT ›› 2017›› Issue (2): 81-87.doi: 10.13466/j.cnki.lyzygl.2017.02.014

• Scientific Research • Previous Articles     Next Articles

Study on Spatial Distribution and Population Dynamics of Wild Tea in Hainan Island

LI Yuanling1,2(), ZHANG Li1,2, YANG Xiaobo1,2(), LI Donghai1,2, ZHANG Kai1,2, WU Tingtian1,2   

  1. 1. College of Tropical Agriculture and Forestry,Hainan University,Haikou 570228,China
    2. Key Laboratory of Protection and Development Utilization of Tropical Crop Germplasm Resources,Haikou 570228,China
  • Received:2016-11-30 Revised:2017-02-26 Online:2017-04-28 Published:2020-10-10
  • Contact: YANG Xiaobo E-mail:liyuanlinghn@163.com;yanfengxb@163.com

Abstract:

Wild tea trees have strong environmental adaptability and strong resistance to adverse natural environment.They are the important gene pool of cultivated tea varieties of hybrid breeding and improved varieties.The population diameter structure,static life table and survival curve,as well as the spatial distribution pattern and distribution of wild tea populations are studied and population characteristics based on the investigation of the natural distribution of wild tea plant resources in Hainan Island are analyzed.The results show that:1) Wild tea trees are mainly distributed in the central and western mountains of Wuzhishan city,Qiongzhong county,Baisha county and Ledong county in Hainan;2) Wild tea trees are mainly distributed at the slope range of 0~30°,elevation range of 900~1 200m,slope range for the semi-sunny and semi-shady slope area in Hainan;3) The spatial distribution patterns of wild tea populations is clustered,the wild tea population is of stable type because the young trees and middle aged trees are in the majority,and the big trees and old trees are rare;4) The mortality of wild tea population increased with the increass of diameter,the life expectancy of wild tea population decreases with the increase of diameter,and the population survival curve is close to Deevey-I type,which indicates that the population of wild tea is in a relatively stable state,and the population viability decreases with the growth and development of individual.Therefore,in the development and utilization of wild tea tree resources in Hainan Island,it is necessary to strengthen the protection and collection of wild tea tree resources and establish the wild tea germplasm resource base in Hainan.

Key words: wild tea tree, population characteristics, diameter structure, spatial distribution pattern, life table

CLC Number: