基于ArcGIS的重庆市农田生态系统碳源/汇特征研究  

Analysis on Characteristics of Carbon Source/Sink in Farmland Ecosystem in Chongqing Based on ArcGIS

作　　者：罗海秀[1,2] 王龙昌[1] 

机构地区：[1]西南大学农学与生物科技学院/三峡库区生态环境教育部重点实验室/南方山地农业教育部工程研究中心,重庆400716 [2]重庆市璧山区环境保护局,重庆璧山402760

出　　处：《西南师范大学学报（自然科学版）》2015年第3期91-97,共7页Journal of Southwest China Normal University(Natural Science Edition)

基　　金：国家自然科学基金项目(31271673;30871474);重庆市科技攻关项目(CSTC2008AB1001);西南大学国家级大学生创新训练项目(201410635082)

摘　　要：以1997-2011年重庆市农作物产量、耕地面积及农业投入等相关统计数据为依据,对重庆市农田生态系统碳吸收量、碳排放量和碳汇强度进行了测算,以ArcGIS为技术手段进行碳源/汇空间特征分析.结果表明:1997-2011年重庆农田生态系统碳吸收总量总体处于稳定态势,粮食作物碳吸收比例下降,经济作物和果蔬作物碳吸收比例明显上升;碳排放总量呈逐步上升趋势,农用化学品投入是其主要排放源.从空间上看,2011年重庆市三大经济区域农田生态系统碳吸收、碳排放、碳汇的总量和强度从大到小依次为一小时经济圈、渝东北地区、渝东南地区.Based on the statistical data of crop yields ,cropland areas and agricultural inputs from 1997 to 2011 in Chongqing ,the amounts of carbon absorption ,carbon emission and the intensity of carbon sink have been calculated ,and by means of ArcGIS ,the spatial-temporal variations has been analyzed .The conclusions are as following ：the total amounts of carbon absorption show a stabilized trend from 1997 to 2011 ;the carbon absorption ratios of food crops declined ,and the carbon absorption ratios of economic crops and fruits-vegetables crops show remarkable increasing ;the total amounts of carbon emissions show a gradual upward trend ,and the agrochemical inputs is the main source .From space ,the amounts and in-tensity of carbon absorption , carbon emissions , carbon sink in the three major economic regions of Chongqing in 2011 show ：One-hour Urban Economy Circle＆gt; Northeast of Chongqing Area＆gt; Southeast of Chongqing Area .Based on these conclusions ,suggestions and recommendations were provided .

关 键 词：重庆市 农田生态系统 碳吸收 碳排放 碳源/汇 ARCGIS 

分 类 号：S181[农业科学—农业基础科学]