Impacts of Climate and Nutrients on Carbon Sequestration Rate by Wetlands: A Meta-analysis
Impacts of Climate and Nutrients on Carbon Sequestration Rate by Wetlands: A Meta-analysis
复制标题
气候和养分对湿地固碳率的影响：荟萃分析
DOI：
10.1007/s11769-020-1122-3
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发表时间：
2020
影响因子：
3.4
通讯作者：
Zhang H.
中科院分区：
文献类型：
--
作者：
Cheng C.;Li M.;Xue Z.;Zhang Z.;Lyu X.;Jiang M.;Zhang H.
全球众多的湿地是最具生产力的生态系统，具有很高的固碳潜力，可以减缓大气中CO2的增加。然而，在世纪尺度上估算全球湿地平均固碳率的研究却很少。本文采用Meta分析方法，对473个湿地土壤/沉积物柱状样的碳源数据进行了详细的收集和整理。这些岩心的年龄不超过300年，纬度范围从33.6° S到69.7° N。从全球范围来看，无论湿地类型如何，其平均碳排放量均为185.2 g/（m2·yr）。不同湿地类型的碳储量差异显著，其大小顺序为盐沼（247.7 g/（m2·yr））>红树林（229.8 g/（m2·yr））>淡水沼泽（196.7 g/（m2·yr））>泥炭地（76.9 g/（m2·yr））。碳排放量与年平均气温（AMT）和年降水量（Pre）呈正相关。氮素是控制湿地碳排放的最常见和最主要的因子。
Global numerous wetlands are the most productive ecosystem and have high carbon sequestration potential to mitigate increasing CO2in the atmosphere. However, few are available on estimating average carbon sequestration rates by global wetlands (Carbonsq) at century timescale. In this article, Carbonsqdata of 473 wetland soil/sediment cores from the literatures were collected in detail by the meta-analysis method. These cores were no more than 300 years old and spanned a latitudinal range from 33.6° S to 69.7° N. Globally, the average Carbonsqwas 185.2 g/(m2·yr) regardless of wetland types. Carbonsqvaried remarkably between wetland types and ranked as an order of salt marsh (247.7 g/(m2·yr)) > mangrove (229.8 g/(m2·yr)) > freshwater marsh (196.7 g/(m2·yr)) > peatland (76.9 g/(m2·yr)). Carbonsqwas positively related to mean annual temperature (AMT) and annual precipitation (Pre). Nitrogen was the most common and primary factor controlling Carbonsqregardless of wetland types.