Vegetation drives soil microbial metabolic limitation through modifications of soil properties and microbial biomass during desert grassland-shrubland state anthropogenic transition
文献类型：期刊论文
| 作者 | Zhang, Zhenjie2,4; Zhao, Yanan1,4; Li, Zhigang2,4; Wang, Hongmei2,3,4; Li, Zhili2,4; Chen, Yanshuo2,4; Li, B. Larry3 |
| 刊名 | APPLIED SOIL ECOLOGY
 |
| 出版日期 | 2024-10-01 |
| 卷号 | 202页码:16 |
| 关键词 | Shrub anthropogenic encroachment Ecological stoichiometry Microbial nutrient limitation Vector-threshold element ratio model |
| ISSN号 | 0929-1393 |
| DOI | 10.1016/j.apsoil.2024.105609 |
| 产权排序 | 4 |
| 英文摘要 | Shrub encroachment became widespread in grass-dominated ecosystem regions. However, there is still limited attention on the changes in plant-soil system C:N:P stoichiometry and soil microbial metabolic limitation status caused by anthropogenic encroachment of shrubs in the desert grassland of northwest China, as well as their driving mechanisms. In this study, we quantified the C:N:P stoichiometry of plant-litter-soil, soil physicochemical properties, microbial biomass, extracellular enzyme activities, and microbial metabolic limitation status during the anthropogenic transition from grassland to shrubland. Here, our results showed that anthropogenic shrub encroachment reduced plant C, soil water, and soil nutrient contents while increasing N and P contents in both plants and litter. The correlation also suggested that litter nutrient content relied on plant nutrients, while plants depleted soil nutrients. Secondly, with the gradient of shrub encroachment, the stoichiometry (except for soil C:N ratio) of plant-litter-soil showed a decreasing trend and a positive correlation. Furthermore, our study indicated that shrub encroachment reduced soil microbial biomass and extracellular enzyme activities, altering microbial stoichiometry and patterns of enzyme allocation. Redundancy analysis revealed that microbial biomass, extra- cellular enzyme activities, and stoichiometry were mainly driven by soil water content, nutrient content, and nutrient stoichiometry. The vector-threshold element ratio model revealed that along the transition from desert grassland to shrubland, soil microbial nutrient limitation shifted from P to N, while energy (C) limitation intensified. The soil microbial metabolic limitation was driven jointly by plants and litter through modifications of soil properties and microbial biomass. Additionally, soil properties played a crucial role among these factors. In summary, over the past 40 years, shrub anthropogenic encroachment has formed a desert grassland-shrub mosaic landscape, depleted soil water and nutrient contents, and altered ecological stoichiometry and microbial metabolic limitation patterns in northwest China. This study provides new insights into the C, N, and P cycling in plant-soil systems following shrub encroachment caused by global climate change and anthropogenic disturbances. |
| WOS关键词 | EXTRACELLULAR ENZYME-ACTIVITY ; ECOENZYMATIC STOICHIOMETRY ; NUTRIENT LIMITATION ; ECOLOGICAL STOICHIOMETRY ; LITTER DECOMPOSITION ; ORGANIC-CARBON ; LOESS PLATEAU ; PHOSPHORUS STOICHIOMETRY ; CNP STOICHIOMETRY ; PLANT INPUTS |
| 资助项目 | National Natural Science Foundation of China[32260348] ; Postdoctoral Fellowship Program of CPSF[GZC20232621] ; National Natural Science Foundation of China[31860677] ; Ningxia Higher Education Institutions First-Class Discipline Construction Project[NXYLXK2017A01] |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:001316662700001 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; Postdoctoral Fellowship Program of CPSF ; National Natural Science Foundation of China ; Ningxia Higher Education Institutions First-Class Discipline Construction Project |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/208378]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wang, Hongmei; Li, B. Larry |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Ningxia Univ, Key Lab Restorat & Reconstruct Degraded Ecosyst No, Minist Educ, Yinchuan, Peoples R China 3.Univ Calif Riverside, Dept Bot & Plant Sci, Riverside, CA 92521 USA 4.Ningxia Univ, Coll Forestry & Prataculture, Yinchuan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Zhenjie,Zhao, Yanan,Li, Zhigang,et al. Vegetation drives soil microbial metabolic limitation through modifications of soil properties and microbial biomass during desert grassland-shrubland state anthropogenic transition[J]. APPLIED SOIL ECOLOGY,2024,202:16. |
| APA | Zhang, Zhenjie.,Zhao, Yanan.,Li, Zhigang.,Wang, Hongmei.,Li, Zhili.,...&Li, B. Larry.(2024).Vegetation drives soil microbial metabolic limitation through modifications of soil properties and microbial biomass during desert grassland-shrubland state anthropogenic transition.APPLIED SOIL ECOLOGY,202,16. |
| MLA | Zhang, Zhenjie,et al."Vegetation drives soil microbial metabolic limitation through modifications of soil properties and microbial biomass during desert grassland-shrubland state anthropogenic transition".APPLIED SOIL ECOLOGY 202(2024):16. |
入库方式： OAI收割
来源：地理科学与资源研究所
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