区域土地用途转换的土地资源碳储量研究  

Carbon storage of land resources in regional land use conversion

作　　者：张雄[1] 毛星月 柯珂 黄珂 ZHANG Xiong;MAO Xingyue;KE Ke;HUANG Ke(School of Public Administration,South‑central Minzu University,Wuhan Hubei 430074,China;School of Economics and Management,China University of Geosciences(Wuhan),Wuhan Hubei 430074,China)

机构地区：[1]中南民族大学公共管理学院,湖北武汉430074 [2]中国地质大学(武汉)经济管理学院,湖北武汉430074

出　　处：《中国人口·资源与环境》2023年第8期193-202,共10页China Population,Resources and Environment

基　　金：国家自然科学基金项目“农地非农化配置效率测度及效率改进差别化配置策略研究”(批准号:71403300),“城市群农地非农化与经济集聚互馈机理研究:基于非市场价值和非意愿产出”(批准号:71904178);中南民族大学中央高校基本科研业务费专项资金资助中央专项“农村集体产权制度改革促进农民增收成效评价研究”(批准号:CSQ22003)。

摘　　要：土地用途转换是人类社会经济活动过程中不可或缺的重要环节,也是带来土地资源碳储量变化的重要因素。在“双碳”目标下开展区域土地用途转换的土地资源碳储量研究具有重要的现实意义。基于湖北省2000—2020年5期土地用途转换数据,运用In‑VEST模型和PLUS模型,研究湖北省土地用途转换引致的土地资源碳储量时空变化。研究结果表明:近20年湖北省土地资源碳储量总体上呈明显下降趋势;2000—2020年湖北省土地资源总碳储量减少约10.6×10^(7)t;在不同土地用途类型中,林地碳储量占土地资源总碳储量比重最大,达到70.68%;在空间上,湖北省土地资源碳储量高值主要集中于4大山区,武汉城市圈土地资源碳储量损失较为严重;根据PLUS模型预测的湖北省土地用途转换结果,2030年湖北省各地区在生态保护优先状态下的土地资源碳储量值最大,达到7.32×10^(9)t,高于自然发展状态下的7.02×10^(9)t和耕地保护优先状态下的6.76×10^(9)t。研究结论:2000—2020年湖北省土地资源碳储量总体上呈现明显下降趋势,主要原因是湖北省城镇化的快速发展致使建设用地迅速扩张,大量侵占耕地、林地和草地。2030年,在自然发展状态、耕地保护优先和生态保护优先3种不同预测状态下,湖北省各地区土地用途转换趋势存在较大差异性;在生态保护优先状态下的土地资源碳储量值增长最多,林地是湖北省各地区最主要的土地资源碳储量增长源;而耕地保护优先状态下的土地资源碳储量值下降最大。Land use conversion is not only an indispensable component of human socio-economic activities but also an important factor that brings about the change in carbon storage of land resources.It is of great practical significance to study the carbon storage of regional land use conversion in the process of achieving the goals of reaching peak carbon emissions and carbon neutrality in China.Based on land use conversion data over five periods from 2000 to 2020 in Hubei Province,this study applied the InVEST and PLUS models to study the spatial and temporal changes in carbon storage of land resources resulting from land use conversion in the region.The results showed that the carbon storage of land resources in Hubei Province had a noticeable downward trend in the study period,decreasing by approximately 10.6×10^(7)t from 2000 to 2020.Among the different land use types,woodland carbon storage accounted for the largest proportion,reaching 70.68%of the total carbon storage of land resources.In spatial terms,the highest carbon storage value of land resources in Hubei Province was primarily concentrated in the four mountainous areas,with Wuhan metropolitan area experiencing the most serious carbon storage loss.The results predicted by the PLUS model showed that by 2030,the carbon storage value of land resources would reach a maximum of 7.32×10^(9)t in all regions of Hubei Province under the priority state of ecological conservation,surpassing the 7.02×10^(9)t under the priority state of natural development and 6.76×10^(9)t under the priority state of arable land conservation.The study concludes that the total carbon storage of land resources in Hubei province showed a significant decline from 2000 to 2020,mainly due to rapid urbanization leading to the rapid expansion of construction land and the massive encroachment on cultivated land,woodland,and grassland.The 2030 land use conversion trends in Hubei Province would vary considerably between the three different projected states of natural development,priority of cultiv

关 键 词：土地用途转换 碳储量 InVEST模型 PLUS模型 

分 类 号：F301.2[经济管理—产业经济]