重庆市土地利用碳排放空间关联分析

以重庆市38个区县作为研究对象,采用碳排放计算模型和空间自相关模型,对各区县的土地利用碳排放进行时空分析和空间自相关分析,结果表明:1998—2008年,重庆市的碳排放总量呈上升趋势,建设用地和林地分别是碳源和碳汇的主要来源.重庆市的土地利用碳排放总量和碳排放强度均存在明显的正相关性,局部空间自相关形成了以主城核心区为主的高高集聚区和以渝东北、渝东南为主的低低集聚区,以主城周边为主的低高集聚区的空间格局.

Spatial Association Analysis of Carbon Emission on Land Use Patterns in Chongqing

Taking the 38 counties in Chongqing as the research object, and with carbon emission calculation models and spatial autocorrelation models, the carbon emission on land use and spatial autocorrelation has been analyzed in this paper.The results show that during 1998-2013, total carbon emission of land use were calculated shows an upward trend.The construction land was a major carbon emission source and the woodland was a major carbon sink.The carbon emission and the carbon intensity of land use in Chongqing both had significant positive correlation.Partial spatial autocorrelation formed the spatial distribution patterns of high-high gathering areas in the urban core area, the low-low gathering areas in the southeast and northeast of Chongqing, and the high-low gathering areas around the urban core area.