气候变化研究进展 ›› 2024, Vol. 20 ›› Issue (1): 107-117.doi: 10.12006/j.issn.1673-1719.2023.188
陶雨晨1,2, 傅开道1,2(), 张洁1,2, 杨丽莎1,2, 袁茜1,2
收稿日期:
2023-08-30
修回日期:
2023-10-08
出版日期:
2024-01-30
发布日期:
2024-01-02
通讯作者:
傅开道,男,副研究员,作者简介:
陶雨晨,女,硕士研究生
基金资助:
TAO Yu-Chen1,2, FU Kai-Dao1,2(), ZHANG Jie1,2, YANG Li-Sha1,2, YUAN Xi1,2
Received:
2023-08-30
Revised:
2023-10-08
Online:
2024-01-30
Published:
2024-01-02
摘要:
温室效应已成为重要的全球气候问题,而内陆水体是温室气体(CO2和CH4)的重要排放源,更有研究发现筑坝蓄水可能引起河流水体CO2和CH4排放的增多。为积极响应国家“双碳”目标,使用水库温室气体净排放通量评估模型G-res Tool,利用流域基本信息及水库特征数据,对澜沧江干流已建成的10座梯级水库温室气体(CO2和CH4)进行模拟计算,10座水库蓄水后温室气体(CO2和CH4)年排放通量平均值为162.81 g CO2e/(m2·a),远低于全球水库平均水平,均表现为温室气体的“源”,从上游至下游整体呈增加趋势,且排放以CO2为主,全年CO2排放通量为CH4的36倍。考虑了水库蓄水前的温室气体排放及其他非相关人类活动的影响后,得到澜沧江水库温室气体(CO2和CH4)年净排放通量平均值为225.70 g CO2e/(m2·a),表明筑坝增加了库区水体温室气体排放,但和火力发电相比,仍属于相对清洁能源。
陶雨晨, 傅开道, 张洁, 杨丽莎, 袁茜. 澜沧江梯级水库CO2和CH4排放通量研究[J]. 气候变化研究进展, 2024, 20(1): 107-117.
TAO Yu-Chen, FU Kai-Dao, ZHANG Jie, YANG Li-Sha, YUAN Xi. Study on CO2 and CH4 emission fluxes from Lancang River cascade reservoirs[J]. Climate Change Research, 2024, 20(1): 107-117.
图4 2001—2021年澜沧江流域水库蓄水后CH4不同方式年排放通量评估结果
Fig. 4 Assessment results of annual post-impoundment methane emission fluxes for three pathways in Lancang River in 2001-2021
图5 2001—2021年澜沧江流域水库蓄水前(a)及非相关人类活动(b)产生的温室气体年排放通量评估结果
Fig. 5 Assessment results of annual GHG emission fluxes of reservoirs from pre-reservoir impoundment (a) and unrelated anthropogenic (b) sources in Lancang River in 2001-2021
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