中国退耕还林工程固碳现状及固碳潜力估算  

Estimation of Carbon Stock and Carbon Sequestration Potential for China’s Grain for Green Project

作　　者：吴普侠 汪晓珍 吴建召 张晓梅 蔺雨阳 王凯博[5] WU Puxia;WANG Xiaozhen;WU Jianzhao;ZHANG Xiaomei;LIN Yuyang;WANG Kaibo(Key Laboratory of State Forestry Administration on Soil and Water Conservation and Ecological Restoration of Loess Plateau, Shaanxi Academy of Forestry, Xi’an 710082;State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100;Shaanxi Forest Seedling and Farmland for Forest Project Management Center, Xi’an 710082;Panzhihua Academy of A&F Science, Panzhihua, Sichuan 617061;Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710061)

机构地区：[1]陕西省林业科学院黄土高原水土保持与生态修复国家林草局重点实验室,西安710082 [2]西北农林科技大学黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西杨凌712100 [3]陕西省林木种苗与退耕还林工程管理中心,西安710082 [4]攀枝花市农林科学研究院,四川攀枝花617061 [5]中国科学院地球环境研究所,西安710061

出　　处：《水土保持学报》2022年第4期342-349,共8页Journal of Soil and Water Conservation

基　　金：国家自然科学基金项目(42177339);陕西省重点研发计划项目(2021ZDLSF05-02)。

摘　　要：为了科学评估中国退耕还林工程的固碳能力,收集整理了退耕还林一期工程(1999—2010年)详细的造林资料,结合中国主要树种的蓄积量(生物量)生长曲线和退耕还林前后土壤有机碳变化特征及各树种碳储量计算的相关参数,估算退耕还林工程1999—2050年的固碳量及其变化。结果表明:截至2010年,退耕还林工程造林总固碳量(土壤和植被)为355.87 Tg;工程实施期间,造林后期固碳量显著大于造林前期,平均每年固碳量为29.66 Tg;工程林固碳增汇潜力不断增加,预计到2050年中国退耕还林工程的固碳增汇潜力为1234.04 Tg。因此,中国的退耕还林工程产生了巨大的碳汇效益。In order to scientifically evaluate the carbon sequestration capacity of the Grain for Green Project in China,the detailed afforestation data of the first phase of Grain for Green Project were collected.Combined with the growth curve of plantation volume(biomass)of Chinese tree species,the characteristics of soil organic carbon change before and after Grain for Green Project and the relevant parameters of carbon storage calculation of the main tree species,the carbon sequestration capacity and its changes of the Grain for Green Project from 1999 to 2050 were estimated.The results showed that the project’s total carbon storage was 355.87 Tg when the project completed in 2010.When the project was implementing,the total carbon sequestration(trees and soil)of the former period was larger than that of the latter period,and the mean annual carbon sequestration was 29.66 Tg.The potential increment of carbon sink for the project increased.It is expected the potential increment of carbon sink of China's project are 1234.04 Tg in 2050.Therefore,China’s Grain for Green Project has produced huge carbon sink benefits.

关 键 词：退耕还林 固碳量 固碳潜力 固碳速率 

分 类 号：S718.5[农业科学—林学]