Responses of soil enzyme activity and soil organic carbon stability over time after cropland abandonment in different vegetation zones of the Loess Plateau of China
文献类型：期刊论文
| 作者 | Xu, Hongwei1,3; Qu, Qing2; Chen, Yanhua4; Liu, Guobin1,2,3; Xue, Sha1,2,3 |
| 刊名 | CATENA
 |
| 出版日期 | 2021 |
| 卷号 | 196页码:13 |
| 关键词 | Soil organic carbon Soil enzyme activity Grass restoration Rainfall gradient Loess Plateau |
| ISSN号 | 0341-8162 |
| DOI | 10.1016/j.catena.2020.104812 |
| 通讯作者 | Xue, Sha(xuesha100@163.com) |
| 英文摘要 | The effects of cropland abandonment on soil enzyme activity and soil organic carbon (SOC) stability, along with the driving factors, are poorly understood. Here, we aimed to systematically and comprehensively evaluate soil enzyme activity, SOC stability, and the associated driving factors in different vegetation zones after cropland abandonment on the Loess Plateau, China. We selected grasslands with different recovery times along a rainfall gradient encompassing the steppe zone (SZ), forest-steppe zone (FSZ), and forest zone (FZ). We measured and compared the changes in soil enzyme activity (saccharase, polyphenol oxidase, urease, phosphatase, and catalase) and SOC stability as a function of recovery time; we also evaluated the relationships between these two parameters. In SZ and FSZ, soil enzyme activity, fractions of oxidizable carbon (including very labile [C1], labile [C2], and less labile [C3]), and the carbon management index (CMI) increased with recovery time, whereas the SOC stability index (SI) decreased. Conversely, in FZ, polyphenol oxidase activity increased linearly, urease and catalase activities decreased linearly, and the change in saccharase activity was represented by a cubic equation regression. SI showed no obvious changes with recovery time, whereas C1, C2, and C3 initially decreased and then increased. Redundancy analysis showed that, in FSZ and FZ, soil enzyme activity, C1, C2, C3, and SI were influenced by vegetation diversity, coverage, and soil nutrient levels. In comparison, in SZ, these parameters were mainly influenced by soil nutrient levels. Soil enzyme activity was strongly correlated with C1 and C3 in SZ and FSZ, but not in FZ. Overall, in SZ and FSZ, soil enzyme activity increased with recovery time, whereas SOC stability decreased. In contrast, both parameters were relatively stable in FZ, which had higher mean annual precipitation and mean annual temperature. |
| WOS关键词 | MICROBIAL BIOMASS ; FOREST ; SEQUESTRATION ; PATTERNS ; NITROGEN ; ROOT ; COMMUNITIES ; FRACTIONS ; TURNOVER ; PASTURE |
| 资助项目 | National Key Research and Development Program of China[2016YFC0501707] ; Natural Science Foundation of China[41771557] |
| WOS研究方向 | Geology ; Agriculture ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000583955200003 |
| 出版者 | ELSEVIER |
| 资助机构 | National Key Research and Development Program of China ; Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/156445]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Xue, Sha |
| 作者单位 | 1.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 2.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Beijing Acad Agr & Forestry Sci, Inst Plant Nutr & Resources, Beijing 100097, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Hongwei,Qu, Qing,Chen, Yanhua,et al. Responses of soil enzyme activity and soil organic carbon stability over time after cropland abandonment in different vegetation zones of the Loess Plateau of China[J]. CATENA,2021,196:13. |
| APA | Xu, Hongwei,Qu, Qing,Chen, Yanhua,Liu, Guobin,&Xue, Sha.(2021).Responses of soil enzyme activity and soil organic carbon stability over time after cropland abandonment in different vegetation zones of the Loess Plateau of China.CATENA,196,13. |
| MLA | Xu, Hongwei,et al."Responses of soil enzyme activity and soil organic carbon stability over time after cropland abandonment in different vegetation zones of the Loess Plateau of China".CATENA 196(2021):13. |
入库方式： OAI收割
来源：地理科学与资源研究所
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