摘要
NEP是净生态系统生产力的简称,其含义通常是1 hm2生态系统每年净吸收人类经济活动排放到大气中的CO2中"碳元素"的最大质量.利用《国家土地利用分类现状标准》将陆地生态系统细分为14个二级子系统,构建了二级子系统面积和NEP的碳承载力的测算模型.以亚洲热带森林的NEP为参照值,利用NEP纬度变异规律,推算了云南森林、灌木林、水田、旱地的NEP值;结合国内其他学者关于茶园、果园、牧草地等子系统NEP的研究成果,推算了云南生态系统的碳承载力.结果表明,云南于2012年开始出现轻微的碳赤字现象;2012年和2013年的碳赤字率分别为-3.99%和-6.55%.
NEP,short for net ecosystem productivity,refers to the net maximum quality of C among CO2 from economic activity of mankind that 1hm2 ecosystem can absorb in a year. National Land Use Status Classification Standard is used to divide the ecosystem into 14 secondary subsystems. The calculation model of carbon carrying capacity of each subsystem is then built. Based on NEP latitude pattern,the forest NEP in the Asiatic tropics is taken as the reference value to calculate the NEP of forest,shrub land,paddy field and dry land in Yunnan province. The results are combined with results of other subsystems＇ NEP researches such as tea garden,orchard,grassland to calculate the carbon carrying capacity of Yunnan province. The empirical study makes it clear that slight deficit phenomenon has appeared in Yunnan province since 2012. The deficit ratio in 2012 and 2013 are- 3. 99% and- 6. 55%,respectively.
出处
《昆明理工大学学报（自然科学版）》
CAS
2016年第5期127-133,共7页
Journal of Kunming University of Science and Technology(Natural Science)
基金
国家自然科学基金项目(71263030
71463034)
云南省哲学社会科学研究基地课题(JD2014YB09)
昆明理工大学管理与经济学院热点领域科研支撑计划项目(QY2015028)
