南昌市农田生态系统碳源/汇及碳足迹分析

Analysis of Carbon Source/sink and Carbon Footprint of Farmland Ecological System in Nanchang

运用南昌市2003~2013年主要农业经济作物、农业投入等统计数据,对该市的农田生态系统进行碳源/汇估算,并将各类具体因素与碳排放量及碳吸收量用SPSS17.0做相关性分析,得到以下结论：近年南昌市的碳排放量总体呈上升趋势,从2003年的713万t增加至2013年的909万t,播种面积及化肥使用量是其主要影响因素并与其呈显著正相关关系。南昌市碳吸收量总体呈现稳步增加状态,从2003年的118万t增加至2013年的226万t,稻谷、花生和豆类等农作物产量是碳吸收量的主要影响因素。碳足迹呈现平稳下降趋势,可见南昌市农田系统种植结构是有利于增强农田系统谈吸收功能稳定增长趋势的。

Due to statistical data of agricultural economic crops and agricultural inputs in Nanchang city during 2003 ~2013,the carbon sources / sinks of farmland ecosystem were estimated,and all kinds of specific factors,carbon emissions and carbon absorption were analyzed with SPSS17.0,the following conclusions were obtained：In recent years,the total amount of carbon emission in Nanchang has increased,from 1 million 180 thousand tons in 2013 to 2 million 260 thousand tons in 2003,and rice,peanuts and beans and other crops yield is the main impact factors of carbon absorption.Carbon footprint showed a steady downward trend,it is seen that the planting structure of farmland system in Nanchang city is conducive to enhancing the stable growth trend of the carbon absorption function of farmland system.