基于生态系统固碳的陕北大气CO2治理成本核算

干旱区地理 ›› 2016, Vol. 39 ›› Issue (1): 122-129.

基于生态系统固碳的陕北大气CO₂治理成本核算

张翀¹, 任志远²

1. 宝鸡文理学院, 陕西省灾害监测与机理模拟重点实验室, 陕西宝鸡 721013;
2. 陕西师范大学旅游与环境学院, 陕西西安 710119

收稿日期:2015-01-18 修回日期:2015-05-02 出版日期:2016-01-25
通讯作者: 任志远(1953-),陕西兴平人,教授,博士生导师,主要从事国土资源开发与生态环境评价研究.Email:renzhy@snnu.edu.cn
作者简介:张翀(1986-),男,陕西省西安市人,博士,讲师,主要从事资源环境遥感与GIS研究.Email:zhangch3348@126.com
基金资助:
国家自然科学基金项目"我国生态脆弱区能源开发生态效应测评与调控研究"(41371523);陕西师范大学中央高校基本科研业务费专项资金资助"基于MATLAB的时间序列地理栅格数据智能化处理"(GK201404005)

Dynamic estimation of the cost of atmospheric CO₂ treatment based on carbon fixation of ecosystem in northern Shaanxi

ZHANG Chong¹, REN Zhi-yuan²

1 Shaanxi Key Laboratory of Disaster Monitoring and Mechanism Modeling, Baoji University of Arts and Sciences, Baoji 721013, Shaanxi, China;
2 College of Tourism and Environment, Shaanxi Normal University, Xi'an 710062, Shaanxi, China

Received:2015-01-18 Revised:2015-05-02 Online:2016-01-25

摘要/Abstract

摘要： 基于2000-2012 年的遥感数据和气象台站实测数据,利用光能利用模型对陕北地区植被净第一性生产力进行了测评,从而计算得到植被固碳价值量,进而估算出陕北各个县区CO₂治理成本,并采用Theil-Sen 趋势分析其变化特征.结果表明:(1)2000-2012 年陕北大气中超出350×10_-6的CO₂、生态固碳与需要治理的CO₂的多年月均值分别为12.58、0.76 和11.81 t·hm^-2,月变化率分别为0.066 0、0.002 7 和0.063 2 t·hm^-2·mon^-1.(2)在CO₂治理单位面积的平均成本核算中,森林、灌丛与草丛属于生态型植被,产生一定的经济效益,其他植被类型均属消耗型,其中投资成本由大到小依次为荒漠植被 >草原 >栽培植被 >草甸.(3)空间上,由于不同地表覆盖固碳的差异性,陕北单位面积CO₂治理平均成本由南向北逐渐增大.陕北南部属于生态型,各县区产生一定的经济效益,陕北中北部地区属消耗型,分县区单位面积CO₂治理平均成本居高不下.(4)2000、2006 和2012 年陕北CO₂治理合计成本分别为3.40×10⁸、9.42×10⁸与18.16×10⁸元·a^-1.CO₂治理合计成本变化率由东向西、由东南向西北逐渐递增,陕北南部县区CO₂治理合计成本变化相对较慢,而陕北中北部的CO₂治理成本在极显著升高.

关键词: NPP, 固碳, 碳捕捉与封存, 成本核算, 陕北

Abstract: The photosynthesis of green plants can absorb carbon dioxide and release oxygen,which helps keep the atmosphere balance of CO₂ and O₂. Measuring the value of carbon fixation and oxygen release is very important for understanding the ecological system as well as its change. The cost of atmospheric CO₂ treatment and their dynamic changes were analyzed based on remote sensing and meteorological data in northern Shaanxi. Light energy utilization model was used to estimate Net Primary Productivity(NPP)with MODIS/NDVI data, and then NPP was converted to the amount of CO₂ fixation through photosynthesis equations. Finally,the values of CO₂ fixation and the least cost of atmospheric CO₂ treatment in northern Shaanxi ecosystem were computed by using forestation cost method. Results show as follows:(1)The cost of CO₂ treatment from high to low was: desert > steppe > cultivated vegetation > meadow > forest. Therein,forest,bushwood and grass belonged to ecological vegetation which could produce a certain economic benefit;while other vegetation belonged to consumptive vegetation.(2)Due to the otherness of different land cover,the mean cost of CO₂ treatment increased gradually from south to north part of northern Shaanxi,which is because that the vegetation in south part of northern Shaanxi belongs to the ecological type,while vegetation in north and central part of northern Shaanxi belongs to the consumptive type.(3)The change rate of total cost increased from east to west and from southeast to northwest. And the growth rate of southern part of northern Shaanxi is slower than that in north and central part of northern Shaanxi. The cost of atmospheric CO₂ treatment presents a significant difference between south and north region in northern Shaanxi,which is mainly due to the otherness of different land cover. South part of northern Shaanxi which belongs to semi-humid region has relatively high vegetation,therefore,the vegetation can not only fix more CO₂ but also can produce a certain economic benefit. However,the concentration of CO₂ showed a significant increase in north part of northern Shaanxi due to the development of energy industry and its processing industry in the ecologically vulnerable area.

Key words: NPP, carbon fixation, carbon capture and storage, cost accounting, northern Shaanxi

中图分类号:

TP79

张翀, 任志远. 基于生态系统固碳的陕北大气CO₂治理成本核算[J]. 干旱区地理, 2016, 39(1): 122-129.

ZHANG Chong, REN Zhi-yuan. Dynamic estimation of the cost of atmospheric CO₂ treatment based on carbon fixation of ecosystem in northern Shaanxi[J]. , 2016, 39(1): 122-129.

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基于生态系统固碳的陕北大气CO₂治理成本核算

Dynamic estimation of the cost of atmospheric CO₂ treatment based on carbon fixation of ecosystem in northern Shaanxi

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