农田生态系统碳源/汇时空演变因素分析——以黑龙江省为例
Analysis of Spatial and Temporal Evolution Factors of Carbon Sources/Sinks in Farmland Ecosystems—Taking Heilongjiang Province as an Example
王诗雨 1刘学伟 1崔鸿鹏 2刘倩 1胡畅达 1张晶晶3
作者信息
- 1. 黑龙江省国土空间规划研究院,哈尔滨 150090
- 2. 黑龙江省水利水电勘测设计研究院,哈尔滨 150090
- 3. 内蒙古自治区国土空间规划院,呼和浩特 010010
- 折叠
摘要
文章基于黑龙江省农资投入、农作物播种面积等数据,采用LMDI分解模型,对2008-2021年该省农田生态系统碳源/汇量进行测算.结果表明:①黑龙江省农田生态系统碳排放量呈快速增长后缓慢下降的态势,其中稻田种植产生的CH4导致碳排放量占比最高,为59.66%;碳吸收量总体呈上升态势,年均增长率为3.85%,其中玉米和水稻增幅较大.②从空间变化来看,单位播种面积碳排放量呈中东部高于其他地区的分布格局,单位播种面积碳吸收量呈东部、南部、西部高于北部的分布格局.③对碳源/汇影响因素进行分析可知,提升农业生态效率、优化农业生产结构、控制劳动力规模可有效降低碳排放;碳汇系数、碳汇技术水平对碳吸收量有促进作用,未来可强化精准管理、提升智能化农业效率,增强碳汇能力.
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引用本文复制引用
基金项目
黑龙江省自然资源厅项目([230001]STZB[DY]20220029)
黑龙江省自然资源厅项目([230001]LCZB1DY20220003)
出版年
2024
国家科技期刊平台
NSTL
万方数据