京郊京白梨果园生产系统碳源/汇特征分析  

Carbon source/sink of the production system of Pyrus ussuriensis Maxin. cv. Jingbaili orchard in Beijing

作　　者：杨自立 顾慈阳 高同雨 

机构地区：[1]北京市门头沟区科学技术委员会,北京102300

出　　处：《干旱区资源与环境》2017年第10期144-149,共6页Journal of Arid Land Resources and Environment

基　　金：北京市人保局2012年度博士后科研活动经费资助(A类)"门头沟区植被碳储量及其碳汇价值研究"(2012ZZ-109);中共北京市委组织部2013年度优秀人才培养资助(D类)"门头沟特色果业果园低碳管理技术研究-以京白梨果园为例"(20130008017000003)资助

摘　　要：作为一类农业生产系统,果园在森林生态系统碳循环中扮演着重要角色。本研究以北京市门头沟区军庄镇孟悟村京白梨标准化生产示范基地为对象,对其2015年度的碳源/汇特征进行了分析。结果表明:该生产系统碳排放总量为7502.40kg Ce,强度为375.12kg Ce/hm2,灌溉消耗电能造成的碳排放占总量比例最高,为46.76%;系统内植被碳吸存总量为57979.02kg C,强度为2898.95kg C/hm2,果园套种作物对系统碳吸存贡献最大,占总量的79.47%;系统碳效率为7.73kg C/kg Ce。总体上,该生产系统为碳汇,具备较强的生产可持续性,同时,实施果树节水灌溉,借助雨洪利用工程减少果园灌溉对地下水的依赖,及合理套种林下作物,是进一步提升其节碳增汇水平的有效途径。As a part of agricultural production system,orchards play an important role in the carbon cycle of forest ecosystem. Taking the standardized demonstration base for Pyrus ussuriensis Maxin. cv. Jingbaili production in Mengwu village as test objective,its carbon source/sink characteristics in 2015 were analyzed in our research.The results were showed as follows： the total carbon emission of the production system was 7502. 40 kg Ce and its intensity was 375. 12 kg Ce/hm2,whose maximum source was the electricity consumed by irrigation（account for46. 76% of the total）; the total vegetation carbon sequestration was 57979. 02 kg C and its intensity was 2898.95 kg C/hm2,whose biggest contributor came from the interplanted crops（account for 79. 47% of the total）; its carbon efficiency was 7. 73 kg C/kg Ce,respectively. On the whole,the production system was a carbon sink,which possessed well sustainability. In addition,more carbon sequestration with less carbon emission could be achieved,relying on the implementation of economic system for irrigation,the intercepting projects for precipitation and flood,and the interplant of crops.

关 键 词：低碳农业 碳排放 碳吸存 碳效率 生产系统 京白梨果园 

分 类 号：S66[农业科学—果树学]