中国国土资源经济2024，Vol.37Issue(5)：4-13,88,11.DOI:10.19676/j.cnki.1672-6995.000958
农田生态系统碳源/汇时空演变因素分析
Analysis of Spatial and Temporal Evolution Factors of Carbon Sources/Sinks in Farmland Ecosystems
摘要
Abstract
Based on the data on agricultural inputs and crop sowing areas in Heilongjiang Province,the article used the LMDI decomposition model to measure the carbon sources/sinks of farmland ecosystems in the province from 2008 to 2021.The results showed that:①Carbon emissions from farmland ecosystems in Heilongjiang Province showed a rapid increase followed by a slow decrease,with CH4 produced by rice cultivation accounting for the highest proportion of carbon emissions at 59.66%.Carbon sequestration generally increased with an average annual growth rate of 3.85%,in which corn and rice increased greatly.②In terms of spatial change,carbon emissions per unit of the sown area showed a higher distribution pattern in the central and eastern parts of the country than in other regions,and carbon sequestration per unit of the sown area showed a higher distribution pattern in the east,south and west than in the north.③The analysis of carbon source/sink influencing factors shows that improving agro-ecological efficiency,optimizing agricultural production structure and controlling the scale of labour can effectively reduce carbon emissions.The carbon sink coefficient and the level of carbon sink technology have a promoting effect on carbon absorption,and in the future,we can strengthen precise management,improve the efficiency of intelligent agriculture,and enhance the capacity of carbon sinks.关键词
农田生态系统/碳源/汇/影响因素/黑龙江省Key words
farmland ecosystem/carbon source/sink/influencing factors/Heilongjiang province分类
农业科学引用本文复制引用
王诗雨,刘学伟,崔鸿鹏,刘倩,胡畅达,张晶晶..农田生态系统碳源/汇时空演变因素分析[J].中国国土资源经济,2024,37(5):4-13,88,11.基金项目
黑龙江省自然资源厅项目"黑龙江省耕地和永久基本农田划定"([230001]STZB[DY]20220029) （[230001]STZB[DY]20220029）
黑龙江省自然资源厅项目"2022年度黑龙江省国土变更调查"([230001]LCZB1DY20220003) （[230001]LCZB1DY20220003）
