江西省农作物对大气CO_2吸收能力的研究  

Absorption capacity of crop ecosystem to atmospheric CO_2 in Jiangxi province

作　　者：傅强[1] 康文星[1,2] 吴湘雄[1] 

机构地区：[1]中南林业科技大学生命科学与技术学院,湖南长沙410004 [2]南方林业生态应用技术国家工程实验室,湖南长沙410004

出　　处：《中南林业科技大学学报》2012年第4期117-121,共5页Journal of Central South University of Forestry & Technology

基　　金：科技部公益性研究项目(2007-4-15)

摘　　要：在收集江西省农作物大量数据的基础上,着重分析了2009年江西省农业种植系单位面积吸收CO2能力。其结果显示:2009年,江西省农作物共吸收大气中CO2 71 038 480 t。各种作物年每年吸收CO2量的多少由它的单位面积产量及其种植面积决定;高杆作物单位面积吸收大气中CO2的量比矮秆作物多;作物连作或复种,单位面积吸收CO2量比每年只种一次的作物大;经济产量生长在地上部分的作物,单位面积吸收CO2能力一般高于经济产量生长在地下部分的作物;江西省应多种植适合当地气候环境条件又具有高生物产量的作物,其它农作物能象水稻和蔬菜一样进行轮作或连作,不仅能提高单位面积产量,增加经济效益,而且也能提高江西农作物系统固定大气CO2量的能力。On the basis of collecting a large number of domestic and international carbon-sink data in farmland, the CO2 absorbent capacity per unit area of economic crops in Jiangxi province was emphatically analyzed. The results show that in 2009 Jiangxi province crops system absorbed CO2 71 038 480 t in the atmosphere. The CO2 absorption content of each crop was determined by its yield per unit area and planting area. The high-stem crops （such as sugar cane, fruit with melon, cassava） absorbed more CO2 than the low-stalk crops （such as peanuts, soybeans, vegetables）. The continuous cropping （such as rice） and multiple cropping＇ CO2 absorption capability in unit area were greater than that of monoculture. The crops that their economic yields are on over-ground part, their CO2 absorption capability in unit area were higher than that of their economic yield are underground part. The suggestions are given that the crops, which are suitable for local weather conditions and have high yield and can be planted with rotation cultivation and continuous cropping （such as rice and vegetables）, should be planted. The measures not only can increase yield per unit area but also can improve economic benefits, and can raise the ability of fixing CO2 in the air of Jiangxi province crops system.

关 键 词：农作物生态系统 生物量 吸碳能力 江西省 

分 类 号：S716[农业科学—林学] S181