期刊
GLOBAL ECOLOGY AND CONSERVATION
卷 27, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.gecco.2021.e01589
关键词
Carbon storage; Nitrogen storage; Restoration time; Soil organic carbon; Total nitrogen
资金
- National Natural Science Foundation of China [31870443]
- Natural Science Foundation of Heilongjiang Province of China [LH2020C033]
Wetland restoration has a positive impact on soil organic carbon and total nitrogen content and storage, with the effects becoming more prominent with longer restoration time. The restoration rate was faster in the first 8 years, but slowed down afterwards.
Wetland restoration significantly affects ecosystem carbon and nitrogen cycles by changing soil physicochemical properties and plant properties. To reveal the effect of wetland restora-tion on soil organic carbon (SOC) and total nitrogen (TN) storage, we measured the SOC and TN content and calculated their storage in a restoration chronosequence (1, 4, 8, 13, 17, 27 years) and compared them with those in a soybean field and a natural marsh, all in Sanjiang Plain, northeast China. Our results showed that the SOC and TN content and storage in the in-vestigated sites increased with restoration time. However, the restoration rate was faster in the first 8 years but slowed down after 8 years of restoration. The SOC and TN content and storage decreased with soil depths in the eight sites. After 27 years of restoration, the carbon and nitrogen storage in the restored site was 2.8 and 1.9 times that in the soybean field, respec-tively. However, the SOC and TN storage in the 27-year restored site was 45.3% and 35.1% lower than that in the natural marsh, respectively. The SOC and TN content, bulk density, moisture content, clay, and plant belowground biomass significantly impact the SOC and TN storage (P < 0.01). This study indicates that marsh restoration contributes to the accumulation of SOC and TN, but the restoration of SOC and TN storage to the level of natural marshes may take decades. (c) 2021 The Authors. Published by Elsevier B.V. CC_BY_NC_ND_4.0
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据