河南省耕地质量变化对农田固碳能力的影响  

Study on Influence of Cultivated Land Quality Change on Carbon Sequestration Capacity of Farmland Ecosystem in Henan Province

作　　者：宋艳华[1] 王自威 袁晨光 杨建波[1] SONG Yanhua;WANG Ziwei;YUAN Chenguang;YANG Jianbo(Institute of Geography,Henan Academy of Sciences,Zhengzhou 450052,China)

机构地区：[1]河南省科学院地理研究所,郑州450052

出　　处：《地域研究与开发》2023年第4期143-148,180,共7页Areal Research and Development

基　　金：河南省软科学研究计划项目(222400410131);河南省科学院科技智库研究项目(230701007);河南省科学院基本科研业务费项目(220601065);河南省自然科学基金项目(212300410168)。

摘　　要：通过评价河南省105个县耕地碳吸收、碳排放和碳存储能力,以及各县平均耕地质量等别、各耕地质量评价指标的量化分值,探索耕地质量及其评价因素与农田生态系统碳汇能力的关系,揭示2011—2019年河南省耕地质量变化对农田生态系统固碳能力的影响。结果表明:(1)河南省农田生态系统总体呈现碳汇。(2)河南省耕地碳存储能力与质量之间存在显著线性相关性,耕地质量为9.24等时耕地碳吸收和碳排放达到平衡,固碳量为0,等别优于9.24等时,耕地碳吸收量大于碳排放量,表现为碳汇,反之,表现为碳源。(3)耕地质量的高低和不同质量等别耕地面积的变化显著影响区域耕地碳存储量。(4)多个耕地质量评价因素与农田碳吸收、碳排放和固碳能力间存在显著相关性。By evaluating the carbon absorption,carbon emission and carbon storage capacity of cultivated land in 105 counties of Henan Province,the average quality of cultivated land in each county,and the quantitative scores of each quality evaluation index of cultivated land,the relationship between cultivated land quality and its evaluation factors and the carbon sequestration capacity of farmland ecosystem was explored,and the impact of cultivated land quality change on the carbon sequestration capacity of farmland ecosystem in Henan Province from 2011 to 2019 was revealed.The results indicated that:(1) On the whole,the farmland ecosystem in Henan Province was a carbon sink.(2) There was a significant positive linear correlation between carbon sequestration capacity of farmland ecosystem and cultivated land quality in Henan Province.When the cultivated land quality level was 9.24,the carbon absorption and carbon emission of cultivated land reached a balance,and the carbon sequestration was 0.When the equivalence level was better than level 9.24,the carbon absorption of cultivated land was greater than the carbon emission,and the cultivated land acted as a carbon sink,whereas it acted as a carbon source.(3) The change of cultivated land quality and cultivated land area of different levels would significantly affect the carbon storage in farmland ecosystem.(4) There was a significant correlation between several cultivated land quality assessment factors and farmland carbon absorption,carbon emission and carbon sequestration capacity.

关 键 词：耕地质量 农田生态系统 碳吸收 碳排放 固碳能力 河南省 

分 类 号：F301.21[经济管理—产业经济] S181[农业科学—农业基础科学]