Lag response of landscape dynamics to climate change in Sanjiaolongwan wetland,Northeast China
In order to study the response mode of landscape pattern of wetland to climate change,the wetland dynamics of landscape pattern and climate change from 1985 to 2020 were analyzed using linear and significant functions and the relation-ship between landscape pattern and climate change was revealed using correlation analysis combined with typical correlation analysis taking Sanjiaolongwan wetland as the study area and 8 images and Meihekou meteorological station records as data sources.The results showed that the wetland landscape pattern show fluctuating changes,the area and perimeter increase,the shape has a regular trend,and the fluctuation degree of precipitation and dry-wet was greater than that of the air temperature.The change of landscape pattern has a certain lag in response to climate change.The precipitation has a greater impact on the landscape pattern than the air temperature.Impact of the daily maximum precipitation lags 3 a,impact of the annual precipita-tion lags 4 a,and impact of the temperature change lags 5 a.Wetland landscape delays the impact of climate change by regula-tion,and this results has a certain extrapolation significance for the study of the lag response to climate change of ecosystem.
国家科技期刊平台
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