应用生态学报2017，Vol.28Issue(10)：3341-3350,10.DOI:10.13287/j.1001-9332.201710.002
黄土高原-青藏高原过渡带农户生产系统的碳平衡
Carbon balance of household production system in the transition zone from the Loess Plateau to the Qinghai-Tibet Plateau, China
摘要
Abstract
The transition zone from the Loess Plateau to the Qinghai-Tibet Plateau is one of the regions with most dramatic changes in agricultural production mode and most sensitive response to the carbon balance effect.This paper analyzed the carbon balance of the agriculture system along the altitude gradient in Tongwei,Weiyuan and Xiahe counties.The results showed that with the increase of altitude,the carbon emission,carbon fixation and carbon sink capacity of crops per unit area decreased accordingly,while the average carbon emission,carbon fixation and carbon source capacity of each household in livestock system increased.The integrated crop-livestock production system changed from carbon sink to carbon source.The average carbon emission of each household rose with altitude,but the carbon fixation was the opposite.The change of percentage of household in the transition zone from the Loess Plateau to the Qinghai-Tibet Plateau with carbon balance could be fitted with Logistic equation.In the crop system of Tongwei,Weiyuan and Xiahe with the altitude increase,carbon emission at the inflection point where the household percentage accounted for 50.0％ was 1491,857 and 376 kg CE · household-1,and carbon fixation was 6187,3872 and 778 kg CE · household-1,respectively.For the livestock system,carbon emission was 2218,3725 and 49511 kg CE · household-1,and carbon fixation was 138,230 and 2706 kg CE · household-1,respectively.For the integrated crop-livestock system,carbon emission was 3615,4583 and 49918 kg CE · household-1,and carbon fixation was 6289,4113 and 3819 kg CE · household-1,respectively,which could be the key point for the regulation of regional carbon balance.关键词
作物/家畜/综合生产系统/碳排放/碳固定Key words
crop/livestock/integrated crop-livestock system/carbon emission/carbon fixation引用本文复制引用
吴超超,高小叶,侯扶江..黄土高原-青藏高原过渡带农户生产系统的碳平衡[J].应用生态学报,2017,28(10):3341-3350,10.基金项目
本文由国家自然科学基金项目(31672472)、长江学者和创新团队发展计划项目(IRT17R50)、中央高校基本科研业务费项目(lzujbky-2014-82)、甘肃省2016年草牧业试验试点和草业技术创新联盟科技支撑项目(GCLM2016001)和甘肃省退牧还草科技支撑项目(2015620111000485)资助 This work was supported by the Natural Science Foundation of China (31672472),the Cheung Kong Scholars and Innovative Team Development Program(IRT17R50),the Fundamental Research Funds for the Central Universities (lzujbky-2014-82),the Grass Animal Husbandry Test Pilot and Grass Industry Technology Innovation Alliance Technology Support in 2016 of Gansu Province(GCLM2016001),and the Returning Grazing to Grassland Technology Support of Gansu Province (2015620111000485). （31672472）
