辽宁省“三生”功能时空演变及其碳排放效应

Spatial-temporal Evolution of Productional-Living-Ecological Functions and Their Carbon Emission Effects in Liaoning Province

[目的]探究辽宁省“三生”功能时空演变及其碳排放效应,为“双碳”目标下的国土空间规划提供依据。[方法]基于土地利用多功能性分类识别辽宁省国土“三生”功能,结合直接和间接排放因子法核算碳排放量,探索“三生”功能与碳排放量空间关系及其时空分异性,揭示“三生”功能时空演变的碳排放效应。[结果]①2005—2020年辽宁省“三生”功能空间分布格局总体变化不大,大部分地区以生产和生态功能为主,生活功能区扩张明显,各地级市中心与周边区域空间差异明显。②2005—2013年,辽宁省各县域碳排放量增长迅速,2013—2020年增速缓慢,但空间差异愈发显著,碳排放高值明显集中在沈阳市和大连市。③辽宁省“三生”功能与碳排放量空间布局及数量变化的相关性总体较强,但空间差异明显且影响因素复杂。[结论]辽宁省各县域需要在自然地理条件约束和经济社会发展需求引导下,在明确各自土地主导功能定位的基础上,依托自身区域优势与资源禀赋,加强区域协作,以实现全域碳减排。

[Objective]The carbon emission effect on changes of the productional-living-ecological functions was determined in order to provide a reference for territorial and spatial planning meeting the"dual carbon"goals of"carbon peak"and"carbon neutrality".[Methods]The evaluation assignment method,the energy consumption method,and a geographical weighted regression model were used to determine the spatial-temporal evolution characteristics of the productional-living-ecological functions and their effects on carbon emissions in Liaoning Province from 2005 to 2020.[Results]①The spatial distribution pattern of the productional-living-ecological functions in Liaoning Province did not change much from 2005 to 2020.Most of the areas were dominated by productional and ecological functions,the living function areas expanded significantly,and the spatial differences mainly occurred between the central urban area and the surrounding areas.②From 2005 to 2013,the carbon emissions of counties in Liaoning Province increased rapidly,and from 2013 to 2020,the growth rate was slower but its spatial differences became more obvious.The high carbon emissions were significantly concentrated in Shenyang and Dalian cities.③The overall correlations between the productional-living-ecological functions and carbon emissions were strong.The spatial differences were obvious and the influencing factors were complex.[Conclusion]Under the constraints of natural conditions and guided by their social and economic development needs,counties in Liaoning Province need to clearly define the main functions of the land and promote regional cooperation on the basis of their own advantages and resource endowments so as to realize carbon emission reductions over the entire region.