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Estimation of Non-CO_2 GHGs Emissions by Analyzing Burn Severity in the Samcheok Fire,South Korea 被引量:1
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作者 WON Myoung Soo KOO Kyo Sang +2 位作者 LEE Myung Bo LEE Woo Kyun KANG Kyu-Young 《Journal of Mountain Science》 SCIE CSCD 2012年第6期731-741,共11页
This study was performed to estimate the emission of non-CO 2 greenhouse gases(GHGs) from biomass burning at a large fire area.The extended methodology adopted the IPCC Guidelines(2003) equation for use on data from t... This study was performed to estimate the emission of non-CO 2 greenhouse gases(GHGs) from biomass burning at a large fire area.The extended methodology adopted the IPCC Guidelines(2003) equation for use on data from the Samcheok forest fire gathered using 30 m resolution Landsat TM satellite imagery,digital forest type maps,and growing stock information per hectare by forest type in 1999.Normalized burn ratio(NBR) technique was employed to analyze the area and severity of the Samcheok forest fire that occurred in 2000.The differences between NBR from pre-and post-fire datasets are examined to determine the extent and degree of change detected from burning.The results of burn severity analysis by dNBR of the Samcheok forest fire area revealed that a total of 16,200 ha of forest were burned.The proportion of the area characterized by a 'Low' burn severity(dNBR below 152) was 35%,with 'Moderate'(dNBR 153-190) and 'High'(dNBR 191-255) areas were at 33% and 32%,respectively.The combustion efficiency for burn severity was calculated as 0.43 for crown fire where burn severity was 'High',as 0.40 for 'Moderate' severity,and 0.15 for 'Low' severity surface fire.The emission factors for estimating non-CO 2 GHGs were separately applied to CO 130,CH 4 9,NO x 0.7 and N 2 O 0.11.Non-CO 2 GHGs emissions from biomass burning in the Samcheok forest fire area were estimated to be CO 44.100,CH 4 3.053,NO x 0.238 and N 2 O 0.038 Gg. 展开更多
关键词 Biomass burning non-co 2 ghgs Normalized burn ratio Combustion efficiency emission factor Landsat TM
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绿色创新是否适应气候变化:中国专利和GHG排放数据的实证 被引量:16
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作者 张意翔 成金华 +3 位作者 徐卓程 宋琼 李威龙 潘婷 《中国人口·资源与环境》 CSSCI CSCD 北大核心 2021年第1期48-56,共9页
气候变化是全球面临的最大环境挑战,中国根据自身发展的实际情况提出力争在2030年前达到碳高峰,努力争取在2060年前实现碳中和,要想实现该目标就必须减少包含二氧化碳在内的温室气体排放量。考虑到我国经济和能源系统所具有的高碳化特征... 气候变化是全球面临的最大环境挑战,中国根据自身发展的实际情况提出力争在2030年前达到碳高峰,努力争取在2060年前实现碳中和,要想实现该目标就必须减少包含二氧化碳在内的温室气体排放量。考虑到我国经济和能源系统所具有的高碳化特征,绿色创新驱动被认为是实现碳中和目标的重要途径之一,也是我国主动适应气候变化的主要措施之一。现有研究主要分析绿色创新对气候变化的影响,很少研究绿色创新是否适应气候变化的要求。本文基于2000—2017年我国30个省级行政单位的绿色技术专利与GHG数据,通过Logistic模型、负二项式固定效应回归及自回归分布滞后等模型分析了绿色创新对气候变化的适应程度,该适应程度用气候变化对绿色创新的影响程度表示,两者成正相关关系。研究发现:(1)气候变化会诱导绿色创新,但诱发效应较小。尽管CO2EG的影响最大,但也只有0.3%左右。(2)不同GHG排放源对绿色创新的影响程度不同,天然气和煤炭消费产生的碳排放与之成正比,石油和其他GHG与之成反比。(3)区域碳排放水平与绿色技术创新效应成正比。(4)不同来源的投资对绿色技术专利数量的影响具有异质性,私人投资比政府投资更能提升绿色创新的适应程度。最后,从以下几个方面提出了提高绿色创新对气候变化适应程度的若干建议:(1)中央政府应通过减税和补贴等手段刺激地方政府进行绿色创新投资;(2)实行差异化行业创新政策,更加致力于促进旨在减少煤和天然气碳排放的技术研发;(3)加大新能源投资;(4)刺激私人投资,完善投资结构,把有限的私人投资投入到能源和电信等行业,提高私人公共投资的创新效率。 展开更多
关键词 气候变化 专利 创新 CO_(2)排放 ghg排放
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A global analysis of CO_(2)and non-CO_(2)GHG emissions embodied in trade with Belt and Road Initiative countries
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作者 Jing Hou Xu Deng +1 位作者 Cecilia Han Springer Fei Teng 《Ecosystem Health and Sustainability》 SCIE 2020年第1期18-37,17,共21页
Introduction:The Belt and Road Initiative(BRI)is an important cooperative framework that increasingly affects the global economy,trade,and emission patterns.However,most existing studies pay insufficient attention to ... Introduction:The Belt and Road Initiative(BRI)is an important cooperative framework that increasingly affects the global economy,trade,and emission patterns.However,most existing studies pay insufficient attention to consumption-based emissions,embodied emissions,and non-CO_(2) greenhouse gases(GHGs).This study constructs a GHG emissions database to study the trends and variations in production-based,consumption-based,and embodied emissions associated with BRI countries.Outcome:We find that the per capita GHG emissions of BRI countries are lower than the global average but show significant variation within this group.We also find that trade-embodied emissions between BRI countries and China are growing.As a group,BRI countries are anet exporter of GHGs,with a global share of net export emissions of about 20%.In 2011,nearly 80%of GHG export emissions from BRI countries flowed to non-BRI countries,and nearly 15%flowed to China;about 57%of GHG import emissions were from non-BRI countries,and about 38%were from China.Conclusion:Therefore,this study concludes that the BRI should be used to coordinate climate governance to accelerate and strengthen the dissemination and deployment of low-emissions technologies,strategies,and policies within the BRI so as to avoid a carbon-intensive lock-in effect. 展开更多
关键词 Belt and Road Initiative(BRI) China consumption-based emissions non-co_(2)greenhouse gas(NCO2) embodied emissions global multi-regional input-output model(MRIO)
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我国能源活动CO2排放在2020-2022年之间达到峰值情景和可行性研究 被引量:32
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作者 姜克隽 贺晨旻 +4 位作者 庄幸 刘嘉 高霁 徐向阳 陈莎 《气候变化研究进展》 CSCD 北大核心 2016年第3期167-171,共5页
全球到2100年实现将温度上升控制在和工业化前相比2℃以内,已经成为一个政策目标。本文结合中国能源环境政策综合评估(IPAC)模型的近期研究结果,分析了实现全球2℃温升目标下我国能源活动的CO_2排放情景,并对其关键因素进行研究,得到实... 全球到2100年实现将温度上升控制在和工业化前相比2℃以内,已经成为一个政策目标。本文结合中国能源环境政策综合评估(IPAC)模型的近期研究结果,分析了实现全球2℃温升目标下我国能源活动的CO_2排放情景,并对其关键因素进行研究,得到实现这些情景的可行性。研究表明,考虑到我国经济转型、能源效率提升、可再生能源和核电的发展、碳捕获和碳封存技术,以及低碳生活方式的转变,我国能源活动的CO_2排放是可以在2025年之前,甚至更早(如在2020—2022年)实现排放峰值,峰值总量在90亿t左右,之后开始下降,这和我国在全球2℃温升目标情景中给予的碳空间相一致,支持我国未来在全球温室气体减排中的国际合作路径,以及国内低碳发展政策的制定。实现这样的减排路径,需要在既有的环境和能源政策之外制定针对气候变化减缓的明确和长期的政策,如碳定价。 展开更多
关键词 排放情景 温室气体 能源 峰值 2℃温升目标
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氰氨化钙与生物炭配施对设施菜地土壤N_(2)O、NH_(3)排放的影响 被引量:1
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作者 李晓丹 苏晓红 +3 位作者 杨亚婷 董凯杰 廖文华 高志岭 《河北农业大学学报》 CAS CSCD 北大核心 2023年第2期47-53,共7页
为了探索施用氰氨化钙(石灰氮)设施菜地土壤N_(2)O和NH_(3)的协同减排技术,本研究通过室内模拟试验,采用静态箱法和动态箱法测定了氰氨化钙(LN)、氰氨化钙+酸性生物炭(LN+MB)、氰氨化钙+中性生物炭(LN+WB)、氰氨化钙+碱性生物炭(LN+AB)... 为了探索施用氰氨化钙(石灰氮)设施菜地土壤N_(2)O和NH_(3)的协同减排技术,本研究通过室内模拟试验,采用静态箱法和动态箱法测定了氰氨化钙(LN)、氰氨化钙+酸性生物炭(LN+MB)、氰氨化钙+中性生物炭(LN+WB)、氰氨化钙+碱性生物炭(LN+AB)4个处理N_(2)O和NH_(3)的排放量与排放特征。结果表明:与单施氰氨化钙相比,配施酸性和碱性生物炭使土壤N_(2)O累积排放量分别降低了66.70%和55.45%。配施3种生物炭均使土壤NH_(3)累积挥发量降低,降幅为7.26%~59.61%,另外提高土壤NO3--N含量8.05%~23.57%,降低土壤NH_(4)^(+)-N含量19.00%~43.12%。配施酸性生物炭对土壤N_(2)O、NH_(3)联合减排效果最佳,土壤N_(2)O、NH_(3)和GHG比单施氰氨化钙分别降低了66.70%、59.61%和64.55%。 展开更多
关键词 N_(2)O排放 NH_(3)挥发 氰氨化钙 生物炭 设施菜地土壤 增温潜势
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Economic valuation of gas regulation as a service by rice-duck-fish complex ecosystem 被引量:10
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作者 Yuan Welling Cao Cougui Wang Jinping 《Ecological Economy》 2008年第3期266-272,共7页
Valuating the fimction of ecosystem services is crucial for accounting green GDP, making a conservation policy of ecological environment and the decision of regional development as well as sustainable development stra... Valuating the fimction of ecosystem services is crucial for accounting green GDP, making a conservation policy of ecological environment and the decision of regional development as well as sustainable development strategy. R ice-duck-fish symbiosis has been promoted in several developing countries as a way of increasing incomes for rice farmers, but investigations of its value have mainly focused on direct economic' benefits, such as food and raw material production. Few studies have been conducted on the estimation of indirect services provided by rice-duck-fish complex ecosystem. The gas regulation service and its economic values provided by rice-duck-fish complex ecosystem were studied in Wuhan, China. The major components of gas regulation are O2 emission and greenhouse gases (GHGs, CO2) regulation. The results show that O2 emission from different treatments (including rice-duck (RD), rice-fish (RF), rice-duck-fish (RDF) and rice (CK)) ranged from 26,370 kg/ha to 33,910 kg/ha per year. with an economic value of 10,050-12,920 yuan/ha per ),ear (Chinese currency: 1 euro =10.2475 yuan, August 28, 2007). The net GHGs exchange varied from 1,200 to 3,320 kg/ha per year; and its economic value ranged from 1,040 yuan/ha to 2,900 yuan/ha per year Consequently, the total economic value of gas regulation provided by symbiosis complex ecosystems ranged from 11,090 yuan/ha to 15,820 yuan/ha per year. and the maximum overall economic value of gas regulation was provided by RDF complex ecosystem. The work will be useful for further understanding of the functions of rice-duck-fish complex ecos.vstem services and supplying the theoretical references to agricultural policy. 展开更多
关键词 Eeosystem services Gas regulation ghgs emission: O2 emission Riee-duek-fish complex ecosystems
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Opportunities beyond net-zero CO_(2)for cost-effective greenhouse gas mitigation in China
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作者 Yating Kang Peipei Tian +2 位作者 Kuishuang Feng Jiashuo Li Klaus Hubacek 《Science Bulletin》 SCIE EI CAS CSCD 2024年第21期3434-3443,共10页
Achieving net-zero CO_(2)emissions is the current main focus of China’s carbon neutrality goal.However,non-CO_(2)greenhouse gases(GHGs)are more powerful climate forcers,making their emission reduction an opportunity ... Achieving net-zero CO_(2)emissions is the current main focus of China’s carbon neutrality goal.However,non-CO_(2)greenhouse gases(GHGs)are more powerful climate forcers,making their emission reduction an opportunity to rapidly mitigate future warming.Here,we evaluate non-CO_(2)mitigation potentials,costs and climate benefits in the context of China’s carbon neutrality goals.The assessment is conducted by coupling the integrated assessment model GCAM with a climate emulator.The findings indicate that mitigation technologies can largely reduce fluorinated gas emissions from industrial sectors,but long-term non-CO_(2)reductions of energy sector activities rely heavily on fuel switching.Furthermore,the cumulative costs of deploying non-CO_(2)mitigation technologies are projected to be less than 10%of the total costs of achieving carbon neutrality from 2020 to 2060.If non-CO_(2)mitigation measures are included in the overall mitigation portfolio,the benefits of avoided warming would by far outweigh the total mitigation cost increase.Our results thus highlight that incorporating a wider suite of GHGs into climate change mitigation strategies can enhance the cost-effectiveness of mitigation efforts. 展开更多
关键词 non-co_(2)greenhouse gas emission trajectory Mitigation cost Climate benefit
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中国农田非CO_(2)温室气体减排的研究现状与建议 被引量:10
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作者 张广斌 马静 +1 位作者 徐华 颜晓元 《中国科学院院刊》 CSSCI CSCD 北大核心 2023年第3期504-517,共14页
温室气体减排对控制全球气候变暖具有重要意义。2014年我国农田非CO_(2)温室气体(主要指CH_(4)和N_(2)O)排放占全国温室气体排放总量的4.3%,预计2030年我国实现碳达峰后,化石能源逐步被清洁能源替代,农田CH_(4)和N_(2)O排放占全国温室... 温室气体减排对控制全球气候变暖具有重要意义。2014年我国农田非CO_(2)温室气体(主要指CH_(4)和N_(2)O)排放占全国温室气体排放总量的4.3%,预计2030年我国实现碳达峰后,化石能源逐步被清洁能源替代,农田CH_(4)和N_(2)O排放占全国温室气体排放的比重也将随之增大,其减排的紧迫性和重要性将日渐凸显。然而,现有农田碳减排技术由于缺乏立法教育宣传和成果激励机制等,并未得到充分转化应用与推广示范,使得减排成果难以落地坐实,不利于我国农业碳减排目标的顺利实现。文章总结了我国农田CH_(4)和N_(2)O减排工作的研究进展,指出了当前我国农田CH_(4)和N_(2)O减排所面临的问题,并在今后长效监测平台运维、新方法技术突破、大众减排意识提升及成果推广示范加强4个方面提出了技术和政策上的建议。 展开更多
关键词 农田 碳达峰 非CO_(2)温室气体 减排技术 减排建议
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