Spatial dynamic patterns of saltmarsh vegetation in southern Hangzhou Bay:Exotic and native species

作     者：Si-long Huang Yi-ning Chen Yan Li Si-long Huang;Yi-ning Chen;Yan Li

作者机构：Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China State Key Laboratory of Satellite Ocean Environment DynamicsSecond Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China Dongshan Swire Marine StationXiamen UniversityXiamen 361005China 

出 版 物：《Water Science and Engineering》 (水科学与水工程（英文版）)

年 卷 期：2020年第13卷第1期

页      面：34-44页

核心收录：

学科分类：07[理学] 0713[理学-生态学] 

基　　金：supported by the National Natural Science Foundation of China(Grant No.41776096) 

主　　题：Saltmarsh Spartina alterniflora Scirpus mariqueter Spatial variation Competition Exotic species Native species 

摘      要：A saltmarsh has developed rapidly on the mudflat of Andong Shoal,in southern Hangzhou Bay,over the last decade since *** saltmarsh vegetation changes are driven by both sediment dynamic conditions and the competition between the exotic species Spartina alterniflora(***) and the native species Scirpus mariqueter(***).This study attempted to investigate large-scale spatial variations in the exotic and native species,by analyzing and interpreting a time series(2016-2018) of high-resolution(less than 1 m) remote sensing *** total area of the saltmarsh increased at a rate of 1.07 km^2/year,due to the accretion of the whole tidal *** spatial patterns revealed a new bimodal pattern for *** *** expanded over the upper to middle saltmarsh at a rate of1.68 km2/***,the *** patches at the seaward edge expanded at a negative rate of-0.005 km^2/year,indicating a different pattern in competition:*** had more advantages in the upper saltmarsh,while *** had more advantages in the pioneer zone with low ***,*** mainly established new habitats by invading *** in the middle saltmarsh,but *** occupied the bare mudflat for *** results aindicated that the interspecific competition result between *** and *** depended on elevation,and low elevation might create a favorable environment for *** to win the competition with exotic *** finding could be applied to future invasive species control and saltmarsh management.