Mitigation and Adaptation Strategies for Global Change ( IF 2.5 ) Pub Date : 2023-02-16 , DOI: 10.1007/s11027-023-10046-9
Taryono Darusman , Daniel Murdiyarso , Impron , Iswandi Anas
|
Numerous studies claim that rewetting interventions reduce CO2 and increase CH4 fluxes. To verify the claim, we conducted a systematic review and meta-analysis of the effects of rewetting on CO2 and CH4 fluxes and dissolved organic carbon (DOC). We identified 28 primary articles eligible for meta-analysis, from which we calculated 48 effect sizes for CO2 emissions, 67 effect sizes for CH4 emissions, and 5 effect sizes for DOC. We found that rewetting significantly decreased CO2 fluxes, with temperate zones showing the highest Hedges’ g effect size (−0.798 ± 0.229), followed by tropical (−0.338 ± 0.269) and boreal (−0.209 ± 0.372) zones. Meanwhile, rewetting increased CH4 fluxes, with the highest Hedges’ g effect size shown in temperate zones (1.108 ± 0.144), followed by boreal (0.805 ± 0.183) and tropical (0.096 ± 0.284) zones. In addition, based on yearly monitoring after rewetting, the CH4 emissions effect size increased significantly over the first 4 years (r2 = 0.853). Overall, the rewetting intervention reduced CO2 emissions by −1.43 ± 0.35 Mg CO2–C ha−1 year−1, increased CH4 emissions by 0.033 ± 0.003 Mg CH4–C ha−1 year−1, and had no significant impact on DOC. To improve the precision and reduce the bias of rewetting effect size quantification, it is recommended to conduct more experimental studies with extended monitoring periods using larger sample sizes and apply the before-after control-impact study design, especially in boreal and tropical climate zones.
中文翻译:
![](https://scdn.x-mol.com/jcss/images/paperTranslation.png)
再润湿退化泥炭地对碳通量的影响:荟萃分析
许多研究声称再润湿干预减少了 CO 2并增加了 CH 4通量。为验证这一说法,我们对再润湿对 CO 2和 CH 4通量以及溶解有机碳 (DOC)的影响进行了系统回顾和荟萃分析。我们确定了 28 篇符合荟萃分析条件的主要文章,我们从中计算了 48 个 CO 2排放的影响大小、67 个 CH 4排放的影响大小和 5 个 DOC 的影响大小。我们发现再润湿显着降低了 CO 2通量,温带显示出最高的 Hedges g 效应大小 (-0.798 ± 0.229),其次是热带 (-0.338 ± 0.269) 和北方 (-0.209 ± 0.372) 区域。同时,再润湿增加了 CH 4通量,在温带 (1.108 ± 0.144) 中显示出最高的 Hedges' g效应大小,其次是北方 (0.805 ± 0.183) 和热带 (0.096 ± 0.284) 区域。此外,根据再润湿后的年度监测,前 4 年CH 4排放影响大小显着增加 ( r 2 = 0.853)。总体而言,再润湿干预减少了 CO 2排放 -1.43 ± 0.35 Mg CO 2 –C ha −1 year −1,增加了 CH4排放量减少 0.033 ± 0.003 Mg CH 4 –C ha −1 year −1,并且对 DOC 没有显着影响。为了提高再润湿效应大小量化的精度并减少偏差,建议使用更大的样本量进行更多的延长监测期的实验研究,并应用前后控制影响研究设计,特别是在北方和热带气候区。