湖北省农地利用碳排放时空特征与脱钩弹性研究

RESEARCH ON SPATIAL-TEMPORAL CHARACTERISTICS AND DECOUPLING ELASTICITY IN AGRICULTURAL LAND USE CARBON EMISSION IN HUBEI PROVINCE

基于化肥、农药、农膜、农用柴油、翻耕、稻田6个主要方面的碳源,测算了湖北省1995～2009年及其地、市、州2008年的农地利用碳排放量。结果表明:(1)自1995年以来,湖北农地利用碳排量总体呈现"上升-下降-上升"的三阶段特征,其碳排放强度变化轨迹与此基本一致。(2)区域差异明显:农地碳排放总量,江汉平原、鄂东北地区高,鄂西、鄂东南地区较低;农地碳排放强度,总体呈现东高西低的特征,即鄂东>鄂中>鄂西。进一步运用Tapio脱钩模型对湖北省农地利用碳排放与农业经济发展间的脱钩关系进行了研究,发现以弱脱钩和强脱钩为主,可见近些年来农地利用碳减排取得了一定成效。

Based on six kinds of mainly carbon source, such as chemical fertilizer, pesticide, farming film, agricultural diesel,tilling and paddy field, the research calculated the amount of agricultural land use carbon emission in Hubei Province during the period of 1995--2009, as well as 16 cities of Hubei Province in 2008. The results showed that the agricultural land use carbon emission and carbon emission intensity in Hubei Province presented three-stage-characteristic, namely ＂rise-decline-rise＂. The regional difference was very obvious. The amount of agricultural land carbon emission in Jianghan Plain and northeast of Hubei Province was high,while in west and southeast was low;the agricultural land use carbon emission intensity in east of Hubei Province was the highest,followed by middle zone,and the west zone was the lowest. Further more,the decoupling relationship between agricultural land use carbon emission and agricultural economic development was analyzed by Tapio decoupling model, and the results indicated that the relationship mostly were weak decoupling and strong decoupling. Thus,it＇s easy to know that land use carbon reduction achieved certain results in recent years.