摘 要:以杭州市域為案例,運用數據包絡分析方法中基于投入導向的C2R-I模型,將林地利用中不同類型的林地利用數量作為投入,將森林固碳總量作為最終產出,結合全面的歷史統計資料查證與實地校驗,對我國區域林地利用數量變化的碳源匯效應進行了測度與實證研究。研究結論表明,林地利用數量變化的碳源匯效應評價是可行的,區域林地利用數量變化的碳源匯效應變化同其經濟發展水平具有高度的相關性,這說明經濟增長方式轉變是區域林地利用數量變化的碳源匯效應可持續發展的動力源泉。該研究結論不僅對區域林地利用數量變化的碳源匯效應研究具有理論貢獻,而且可以從碳循環調控的角度為區域低碳經濟發展的模式選擇與發展戰略提供科學依據。
關鍵詞:林地利用數量;碳匯效率;數據包絡分析法;杭州市
中圖分類號 S718.55;F307.2 文獻標識碼 A 文章編號 1007-7731(2013)13-22-06
Measure and Empirical on the Carbon Sinks Efficiency of Regional Forestland Use Quantity
Long Fei et al.
(Economic and Management School,Zhejiang AF University,Hangzhou 311300,China)
Abstract:Take Hangzhou as the example,select C2R-I model based on date envelopment analysis(DEA),which adopt the forestland used in different types as the number of inputs and the total forest carbon sinks as a final output,combined with comprehensivehistorical historal statistics and field calibration,this paper analyzes the carbon sinks efficiency of the regional forestland use quantity.The results are as follows: firstly,the results show that the measure and evaluation of the efficiency of carbon sinks of forestland use quantity is feasible; sencondly,the results show the carbon sink efficiency of the regional forestland use quantity changes with its level of economic development,which indicates that the sustainable development of economic is the source of the carbon sequestration efficiency of the regional forestland use quantity;thirdly,the findings of this paper not only gives a theoretical contribution to the carbon sequestration efficiency of the regional forestland use quantity,but also provides a scientific basis for the development mode selection of regional low-carbon economy from the perspective of the carbon cycle regulation.
Key words:Forestland use Quantity;Carbon sinks efficiency;Date envelopment analysis(DEA);Hangzhou city
1 引言
森林生態系統是陸地碳循環的重要組成部分,通過不同的林地利用方式,森林既可以成為固碳的碳吸收匯(如造林和再造林等),也可能成為釋碳的碳排放源(如林地征占、毀林和森林退化等),因此,《京都議定書》(1997)清潔發展機制同意將造林和再造林作為第一承諾期合格的CDM項目,而哥本哈根協議文件(2009)則提出“減少濫伐森林和森林退化引起的碳排放是至關重要的”,有必要通過立即建立包括REDD+在內的機制,為這類舉措提供正面激勵[1]。因此,在已有的研究文獻中,關于林地的有效利用與森林的可持續管理問題一直是國內外學者研究的重點,如Sampson等研究表明如果改變全球6%~30%的森林管理體制可以使碳吸收上升到1.270PgC/a;……