| 基于统计资料的桑园碳汇估算模型的构建——以四川省为例 |
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| 引用本文： | 王谢,邓清,周婧,唐甜,胡立志,李瑞,张建华.基于统计资料的桑园碳汇估算模型的构建——以四川省为例[J].中国农学通报,2022,38(2):31-37. |
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| 作者姓名： | 王谢 邓清 周婧 唐甜 胡立志 李瑞 张建华 |
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| 作者单位： | 1.四川省农业科学院农业资源与环境研究所,成都 610066;2.农业农村部西南山地农业环境重点实验室,成都 610066;3.成都师范学院,成都 611130 |
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| 基金项目： | 财政部和农业农村部国家现代农业产业技术体系“国家蚕桑产业技术体系”(CARS-18)； |
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| 摘 要： | 针对当前桑园基础资料相对缺乏而限制了桑园碳汇评估的客观现实,本研究以统计资料较为完整的蚕茧产量数据为基础,在假设四川地区所有桑园都采用片叶育进行养蚕的前提下,提出了基于统计资料的桑园碳汇估算模型（mulberry garden carbon sequestration estimation model,MCSD,以下简称：本研究模型）。本研究以森林生态系统碳储量计量指南的灌木模型（shrub model of the forest ecosystem carbon storage measurement guide,SMFC,以下简称：对照模型）为对照,对比了两者在计量2000—2018年四川省桑园桑树碳汇贡献的差异。结果发现：（1）本研究模型估算出四川桑园桑树年均碳密度为10.13 t/hm2,折算出四川桑园2018年碳储量为142.39万t。（2）桑叶和桑枝作为桑园碳汇的主要来源,其碳汇量分别占桑园总碳汇量的44.44%和26.65%。（3）以2000年为基准,本研究模型估算出2000—2018年间四川桑园的碳储量累积达1636.25万t。（4）到2018年,桑叶和桑枝的累积碳汇贡献分别占比60.94%和36.55%。（5）而对照模型的计算结果比本研究模型低了10.73%,且未考虑桑叶收获年和收获量的问题,不能全面地反映桑园的累积碳汇贡献。桑园碳汇评估是实现中国“碳达峰”和“碳中和”目标不可或缺的一个重要内容,本研究结果对于未来标准化评估中国不同地域不同利用方式下桑园生态系统碳汇效应提供了参考。
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| 关 键 词： | 碳库 经济林 碳吸收 参数 多元化利用 |
| 收稿时间： | 2021-08-31 |
Construction of Carbon Sequestration Estimation Model of Mulberry Garden Based on Statistical Data—A Case Study of Sichuan Province |
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| WANG Xie,DENG Qing,ZHOU Jing,TANG Tian,HU Lizhi,LI Rui,ZHANG Jianhua.Construction of Carbon Sequestration Estimation Model of Mulberry Garden Based on Statistical Data—A Case Study of Sichuan Province[J].Chinese Agricultural Science Bulletin,2022,38(2):31-37. |
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| Authors: | WANG Xie DENG Qing ZHOU Jing TANG Tian HU Lizhi LI Rui ZHANG Jianhua |
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| Institution: | 1.Agricultural Resources and Environment Institute, Sichuan Academy of Agricultural Sciences, Chengdu 610066;2.Southwest Mountain Agricultural Environment Key Laboratory, Ministry of Agriculture and Rural Affairs, Chengdu 610066;3.Chengdu Normal University, Chengdu 611130 |
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| Abstract: | In view of the current lack of basic data of mulberry orchards limits the evaluation of carbon sequestration, this study proposed a mulberry garden carbon sequestration estimation model (MCSD) based on statistical data. MCSD was based on relatively complete statistical cocoon production data, and all mulberry orchards in Sichuan were assumed to feed silkworms with mulberry leaves. Taking the shrub model of the forest ecosystem carbon storage measurement guide (SMFC) as a control, this paper compared the difference between the MCSD model and the SMFC model in measuring the contribution of carbon sink of mulberry orchards in Sichuan Province from 2000 to 2018. The results showed that: (1) the average annual carbon density of aboveground part of mulberry in mulberry orchards was estimated to be 10.13 t/hm2, and the carbon reserve of Sichuan mulberry orchards in 2018 was 1.4239 million tons; (2) mulberry leaves and branches were the main sources of carbon sink in mulberry orchard, accounting for 44.44% and 26.65% of the total, respectively; (3) taking 2000 as the base year, MCSD model estimated that the cumulative carbon reserve of Sichuan mulberry orchards from 2000 to 2018 was 16.3625 million tons; (4) by 2018, the cumulative carbon sink contribution of mulberry leaves and mulberry branches accounted for 60.94% and 36.55% of the total, respectively; (5) the calculation result of the SMFC model was 10.73% lower than that of the MCSD model in this study, without considering the harvest year and yield of mulberry leaves, which could not fully reflect the cumulative carbon sink contribution of mulberry orchards. Mulberry carbon sink assessment is an indispensable part to achieve China’s goals of ‘emission peak’ and ‘carbon neutrality’. The results of this study could provide a basis for the future standardized assessment of the carbon sink of mulberry ecosystem in different regions and different utilization modes in China. |
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| Keywords: | carbon pool economic forest carbon absorption parameters diversification |
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