Response of heterotrophic respiration to vegetation restoration in a karst area of SW China
文献类型：期刊论文
| 作者 | Li, Dandan7; Li, Xingchun; Du, Xianyuan; Zhang, Xinyu2,6,7; Wang, Jing7; Dungait, Jennifer A. J.; Quine, Timothy A.; Green, Sophie M.; Wen, Xuefa6,7; Yang, Yang4,6 |
| 刊名 | LAND DEGRADATION & DEVELOPMENT
 |
| 出版日期 | 2023-04-01 |
| 卷号 | N/A |
| ISSN号 | 1099-145X |
| 关键词 | vegetation restoration soil profile horizon heterotrophic respiration microbial property nutrient management |
| DOI | 10.1002/ldr.4625 |
| 文献子类 | Article; Early Access |
| 英文摘要 | The Grain-for-Green Program in China aims to restore sloping karst cropland severely degraded by intensive agriculture to secondary forest. Heterotrophic respiration (Rh) is a major process of carbon release from soils and is associated with the sequestration of soil organic carbon (SOC). However, we still do not have a comprehensive understanding of Rh and what drives it along soil profile horizons during the natural vegetative recovery process in typical karst soils. We investigated the responses of Rh (C release per gram of soil) and specific Rh (C release per gram of SOC) in soil horizons from the soil surface to bedrock at the different vegetation recovery stages in a karst region. Coincident soil microbial properties (e.g., bacterial and fungal abundance, total microbial biomass, potential enzyme activities) and physicochemical properties were quantified. Vegetation restoration after cropland abandonment significantly increased Rh rates due to increased soil nutrients and microbial biomass, bacterial abundances, and hydrolase activities (all, p < 0.05). The rates of Rh enhanced in sloping cropland (SC) from the soil surface to bedrock but reduced in the recovering stages (ASC: abandoned sloping cropland and SF: secondary forest) and primary forest (PF). The specific Rh between SF (1.34 mg CO2-C g(-1) SOC d(-1)) and PF (1.32 mg CO2-C g(-1) SOC d(-1)) were not significantly different but both of them were greater than those in SC (0.79 mg CO2-C g(-1) SOC d(-1)) and ASC (0.8 mg CO2-C g(-1) SOC d(-1)). Soil physicochemical properties and microbial properties explained approximately 48% and 22% of the variations in Rh along vegetation recovery, respectively. Nitrogen to phosphorus stoichiometry exerted the most direct and positive effects on Rh, suggesting the importance of managing soil nutrient status to regulate carbon decomposition during vegetation recovery in karst soils. The increased microbial biomass was the most important microbial factor regulating Rh in later vegetation recovery phases. Our results provide scientific insight into the impact of vegetation restoration on Rh in degraded ecosystems, which is important for reducing carbon loss in karst soils. |
| WOS关键词 | SOIL ORGANIC-CARBON ; MICROBIAL COMMUNITY COMPOSITION ; RESOURCE LIMITATION ; NITROGEN DEPOSITION ; ENZYME-ACTIVITY ; DECOMPOSITION ; SUCCESSION ; REGION ; MINERALIZATION ; SENSITIVITY |
| WOS研究方向 | Environmental Sciences & Ecology ; Agriculture |
| 出版者 | WILEY |
| WOS记录号 | WOS:000943649000001 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/190248]  |
| 专题 | 生态系统网络观测与模拟院重点实验室_外文论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 2.Chinese Acad Sci, Key Lab Vegetat Restorat & Management Degraded Eco, South China Bot Garden, Guangzhou, Peoples R China 3.Hebei Univ Architecture, Dept Municipal & Environm Engn, Zhangjiakou, Peoples R China 4.Dungait, Jennifer A. J.; Quine, Timothy A.; Green, Sophie M.] Univ Exeter, Coll Life & Environm Sci, Dept Geog, Exeter, England 5.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China 6.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China 7.CNPC Res Inst Safety & Environm Technol, State Key Lab Petr Pollut Control, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Dandan,Li, Xingchun,Du, Xianyuan,et al. Response of heterotrophic respiration to vegetation restoration in a karst area of SW China[J]. LAND DEGRADATION & DEVELOPMENT,2023,N/A. |
| APA | Li, Dandan.,Li, Xingchun.,Du, Xianyuan.,Zhang, Xinyu.,Wang, Jing.,...&Guo, Zhiming.(2023).Response of heterotrophic respiration to vegetation restoration in a karst area of SW China.LAND DEGRADATION & DEVELOPMENT,N/A. |
| MLA | Li, Dandan,et al."Response of heterotrophic respiration to vegetation restoration in a karst area of SW China".LAND DEGRADATION & DEVELOPMENT N/A(2023). |
入库方式： OAI收割
来源：地理科学与资源研究所
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