华北平原土地利用/覆盖对CO空间分布的调控作用  

Regulation of land use/cover on CO spatial distribution in North China Plain

作　　者：邓祥征[1,2] 赵海鹏 蒋思坚 李志慧 李连发[1,2] DENG Xiangzheng;ZHAO Haipeng;JIANG Sijian;LI Zhihui;LI Lianfa(Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing 100101,China;University of Chinese Academy of Sciences,Beijing 100049,China;China University of Geosciences(Beijing),Beijing 100083,China)

机构地区：[1]中国科学院地理科学与资源研究所,北京100101 [2]中国科学院大学,北京100049 [3]中国地质大学(北京),北京100083

出　　处：《生态学报》2023年第12期4965-4973,共9页Acta Ecologica Sinica

基　　金：国家重点研发计划(2016YFA0602500)。

摘　　要：CO不仅是中国主要的空气污染物之一,还是温室效应的贡献者。农业用地每年消耗了大量的CO通量,土地利用/覆盖格局对于调控CO空间分布发挥了较大的作用。针对土地利用/覆盖调控CO空间分布开展研究,以华北平原为例揭示人类活动对CO空间异质性的影响。研究发现2010至2020年华北平原CO排放量由4964×10^(4) t降低至2683×10^(4) t,大部分耕地CO浓度由90 t/km^(2)下降至45 t/km^(2)以下。CO浓度空间集聚程度呈现先降低后升高趋势,Moran′s I指数由0.25增加至0.41。经济发展迅速的地区CO污染较为严重,北京和周边城市形成了CO污染高-高集聚区,周口和淮北等城市则形成了低-低集聚区。总体来看,CO浓度呈低-低集聚分布的区域不断扩大,反映出CO减排措施已经初见效果。研究表明土地利用/覆盖在类型与结构方面的差异影响了CO的排放、扩散以及氧化消耗,增加了大气CO收支的不确定性,对CO空间分布具有一定的调控作用。通过分析土地利用/覆盖与CO空间分布的关联性,探究土地利用/覆盖及景观格局对区域CO的调控作用,为实现有效防控CO污染、推进减污降碳协同治理、改善区域环境质量以及提高人居环境水平提供决策参考。CO is one of the major air pollutants in China and is also a contributor to the greenhouse effect.The agricultural land consumes a large amount of CO fluxes every year,and land use/cover patterns play a large role in regulating CO spatial distribution.This study focused on the spatial distribution of CO regulated by land use/cover and revealed the impacts of human activities on the spatial distribution of CO pollution in the North China Plain.The results showe that CO emissions in the North China Plain decreased from 4,964×10^(4) t to 2,683×10^(4) t from 2010 to 2020,and CO concentration in most of the agricultural land decreased from 90 t/km^(2) to less than 45 t/km^(2).The spatial agglomeration degree of CO concentration showed a trend of firstly decreasing and then increasing,with its Moran′s I index increasing 0.25 to 0.41.The areas with more serious CO pollution were concentrated in regions with rapid economic development and formed high-high(H-H)agglomerations areas of CO pollution in Beijing and surrounding cities,and low-low(L-L)agglomeration areas in Zhoukou and Huaibei.Overall,the area where CO pollution was distributed in L-L aggregation was expanding,which to some extent reflected the preliminary effect of emission reduction measures for CO emissions.The study indicated that the land use/cover composition and configuration affected CO emission,diffusion,and oxidative,increased the uncertainty of atmospheric CO balance,and had a regulating effect on the spatial distribution of CO.In this study,the correlation between land use/cover pattern and CO spatial distribution was analyzed to explore the regulation effect of land use/cover pattern on the regional CO pollution.The research provides decision-making references for the control of CO pollution,promoting collaborative governance of pollution and carbon reduction,regional environmental quality,and the level of human settlements.

关 键 词：土地利用/覆盖 CO空间分布 调控作用 减污降碳 华北平原 

分 类 号：X51[环境科学与工程—环境工程] F301.2[经济管理—产业经济]