张美琪,陈波,赵敏

• 1:贵州财经大学
• 2:中国科学院地球化学研究所环境地球化学国家重点实验室

摘要(Abstract)：

湿地作为缓解气候变化的关键生态系统，在碳捕获与碳封存方面发挥着不可替代的作用。湿地碳储量和影响因素的分析以及固碳潜力的预测，对湿地生态保护与管理、国家“双碳”目标实现具有重要意义。应用ArcGIS10.8对《贵州省湿地保护发展规划》(以下简称规划)的3个时期(分别是：1999-2009年；2010-2018年；2018年至今)湿地分布图采用遥感目视解译的方式进行矢量化并根据贵州省岩溶发育强度进行分区。采用生命带研究法与生物量估算法等对贵州省湿地面积和碳储量变化进行估算分析，对重要湿地碳储量与单位面积碳储量进行估算并与全省湿地进行对比，采用固碳潜力计算模型对贵州省重要湿地固碳潜力进行估算，应用Origin软件对各相关影响因子进行数据分析。结果表明：(1)贵州省湿地规划前期的面积为216 526.95 hm~2,规划中期面积为209 726.85 hm~2、规划后期面积为255 440.53 hm~2,总体表现为先下降再升高，总体面积增加38 913.58 hm~2;(2)贵州省湿地碳储量变化为：规划前期为5.97×10~5 t,规划后期为3.78×10~6 t,是规划前期的6倍以上，碳储量增加明显。其中，贵州省重要湿地碳储量为3.24×10~6 t,占全省湿地碳储量85.71%,固碳潜力十分显著；(3)贵州省重要湿地的固碳潜力为1.14×10~4 t C/a,预计到2030和2060年，湿地总固碳量分别达到7.99×10~6 t C和8.34×10~6 t C;(4)温度、DIC浓度、有机碳含量与面积对贵州省重要湿地的碳储量影响较大，重要湿地碳储量与DIC浓度、有机碳含量以及面积呈正相关，而与温度呈负相关关系。对贵州省的湿地碳储量估算与碳中和潜力分析不仅可以了解贵州省湿地碳封存现状，还可为区域湿地生态系统在“3060”双碳目标的贡献上提供理论参考。

关键词(KeyWords)： 湿地;碳储量;碳中和;固碳潜力;贵州省;湿地规划

Abstract:

Keywords:

基金项目(Foundation): 贵州省科技计划项目(黔科合支撑[2021]一般456);; 贵州财经大学校级科研基金项目(2022KYQN05)

作者(Author): 张美琪,陈波,赵敏

DOI: 10.19509/j.cnki.dzkq.tb20220358

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