首页|Impact of seasonal water-level fluctuations on autumn vegetation in Poyang Lake wetland, China

Impact of seasonal water-level fluctuations on autumn vegetation in Poyang Lake wetland, China

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
Water level fluctuations (WLF) are natural patterns that are necessary for the survival of various plants,and WLF guarantee both the productivity and the biodiversity of wetlands.However,the underlying mechanisms of how changes in vegetation are linked to seasonal WLF remain unclear.Using vegetation and hydrological data from 1989 to 2009,we identified the key seasonal fluctuations and their impacts on vegetation in the Poyang Lake wetland by utilizing a tree-based hierarchical model.According to our results:1) WLF in summer had significant impacts on both sedges and reeds.The severe summer floods promoted the expansion of sedges,while they inhibited the expansion of reeds;2) WLF in autumn also greatly impacted sedges,while reeds were severely affected in spring.Specifically,we found that low water levels in autumn led to the expansion of sedges,and low water levels in spring led to the expansion of reeds.The results were well corroborated through comparisons of the vegetation distribution patterns over the last two decades (i.e.,the 1990s and 2000s),which may shed light on corresponding water resource and wetland management.

wetlandreedssedgesseasonal water-level fluctuationsclassification and regression tree model

Xue DAI、Rongrong WAN、Guishan YANG、Xiaolong WANG、Ligang XU、Yanyan LI、Bing LI

展开 >

Key Laboratory of Watershed Geographic Sciences, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences,Nanjing 210008, China

University of Chinese Academy of Sciences, Beijing 100049, China

Jiangsu Second Normal University, Nanjing 210013, China

This research received financial support from the National Key Research and Development Project of ChinaNational Natural Science Foundation of ChinaKey Research Program of the Chinese Academy of Sciencesand the Key Project of Water Resources Department of Jiangxi Province

2016YFC0402204Grant No.41571107KFZD-SW-318KT201503

2019

地球科学前沿
高等教育出版社

地球科学前沿

CSTPCDCSCDSCI
影响因子：0.585
ISSN：2095-0195
年,卷(期)：2019.13(2)
  • 3
  • 9