Carbon Storage and Status of Carbon Sink in Chaohu Lake Catchment Based on GIS
Studies of carbon storage and carbon sink status of terrestrial ecosystems provide data support for the national strategy of carbon peak and carbon neutral.This paper uses the InVEST model and the CASA model to quantitatively study the carbon storage and carbon sequestration rate in the Chaohu lake catchment.The results showed that the total carbon storage in the Chaohu lake catchment in 2022 was 3 350 million tons,the average NPP in 2022 was 469 g/(m2·a),and the average NEP value in 2022 was 348.595 g/(m2·a).The carbon storage in the Dabie mountains in the southwest area of the Chaohu lake catchment is relatively high,while the carbon storage in the urban area of Hefei city is relatively low.This distribution pattern is roughly similar to the spatial distribution of carbon sequestration rates in the Chaohu lake catchment,and the carbon sequestration rate in autumn is higher than in the other three seasons.Land use type is one of the important factors affecting the carbon sink capacity of the catchment.Forestland is the land type with the highest carbon density and carbon sink in the catchment.Converting farmland to forest is an important means to increase regional carbon sinks.
Chaohu lake catchmentCarbon storageCarbon sink status
NETL
NSTL
万方数据
