Patterns and trajectories of macrophyte change in East China’s shallow lakes over the past one century  

作　　者：Feifan HUANG Ke ZHANG Shixin HUANG Qi LIN 

机构地区：[1]State Key Laboratory of Lake Science and Environment,Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences,Nanjing 210008,China [2]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Science China Earth Sciences》2021年第10期1735-1745,共11页中国科学（地球科学英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.41772378);the National Key Research and Development Program of China(Grant No.2017YFA0605200);the One Hundred Talent Program of the Chinese Academy of Sciences(Grant No.Y6SL011001 to Zhang Ke).

摘　　要：Macrophytes play important roles in maintaining ecosystem health and stability of shallow lakes.Better understanding of their long-term dynamics has important theoretical and practical significance for both lake ecosystem restoration and eutrophication control.However,the knowledge about the historical status and changing patterns of macrophytes in China’s shallow lakes is still controversial and lacks systematic research.Here,we reviewed and synthesized the published records of submerged macrophytes from 14 typical shallow lakes in the eastern plain covering the past 100 years.The results suggest that submerged macrophytes have experienced three clear stages of change:rare period(the 1900s–the 1950s),growth period(the 1950s–the 1980s),and recession period(the 1980s–now).This finding is different from the traditional understanding that submerged macrophytes were abundant in the early 20th century and have been degrading since then.On this basis,we proposed the possible evolution pattern(less-more-less)of submerged macrophytes in the eastern plain lake region over the past 100 years,which provides new perspectives about the long-term evolution process of macrophytes in shallow lakes.Furthermore,we found that the decline of submerged macrophytes during the regime shift shows a gradual process at the interdecadal scale;this finding contradicts the classical regime shift theory that macrophytes decline sharply during the critical transition.This study has important theoretical value for the restoration of the eastern plain lakes in China from“turbid lake”to“clear lake”,especially for establishing the historical reference condition and restoration path of macrophytes.

关 键 词：MACROPHYTE Submerged macrophyte EUTROPHICATION Shallow lakes Regime shift Climate change 

分 类 号：X524[环境科学与工程—环境工程] P467[天文地球—大气科学及气象学]