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FOREST RESOURCES WANAGEMENT ›› 2019›› Issue (6): 42-48.doi: 10.13466/j.cnki.lyzygl.2019.06.009

• Scientific Research • Previous Articles     Next Articles

A Study on the Relation Between Tree Ring Width Index and NDVI in the Three Parallel Rivers Region,Yunnan Province

YAN Ping1(), XU Jiannan1, JU Hua2, HAOREN Taben2, GUO Fengyi1, MU Xiaowei1, RUAN Chaoyue3()   

  1. 1. Academy of Forest and Grassland Inventory and Planning.National Forestry and Grassland Administration.Beijing 100714
    2. Inner Mongolia Daqingshan National Nature Reserve Administration.Hohhot 010010
    3. College of Geographical Sciences of the Fujian Normal University,Fuzhou 350000
  • Received:2019-08-02 Revised:2019-10-20 Online:2019-12-28 Published:2020-05-09
  • Contact: RUAN Chaoyue E-mail:284862147@qq.com;1204550748@qq.com

Abstract:

Based on four coniferous tree ring chronologies and GIMMS(global inventory modelling and mapping studies)3g NDVI data from 1982 to 2005 in the three parallel rivers region of Yunnan province,the correlation among tree ring width index,NDVI and climatic factors was analyzed in this paper.The results show that the interannual variation of NDVI is positively correlated with interannual precipitation,and all of them are in a fluctuating upward trend.Tree ring width index is positively correlated with summer temperature,while NDVI is positively correlated with precipitation of July in the previous and currant year,reflecting the difference between the controlled factors of trunk growth and canopy growth.The tree ring width index is only positively correlated with NDVI in July.Coniferous trees reflect part of NDVI changes.The influencing factors of NDVI in the three parallel rivers area are complex and diverse.

Key words: Three Parallel Rivers, tree ring, width, NDVI, climate response

CLC Number: