Effect of stand age on soil microbial metabolic limitation and enzyme activities in Robinia pseudoacacia L. plantations in the loess hilly-gully region, China
文献类型：期刊论文
| 作者 | Zhao, Min1; Sun, Yarong1; Liu, Shaohua1; Li, Yichun1; Chen, Yunming1,2 |
| 刊名 | LAND DEGRADATION & DEVELOPMENT
 |
| 出版日期 | 2024-02-29 |
| 页码 | 12 |
| 关键词 | ecoenzymatic stoichiometry microbial metabolic limitation Robinia pseudoacacia plantations soil extracellular enzyme activities stand age |
| ISSN号 | 1085-3278 |
| DOI | 10.1002/ldr.5082 |
| 通讯作者 | Chen, Yunming(ymchen@ms.iswc.ac.cn) |
| 英文摘要 | Soil heterotrophic microorganisms play crucial roles in soil biogeochemical cycles by secreting extracellular enzymes, but their metabolism is often limited by resource availability. Identifying major resources that limit soil microbial metabolism could help to create reasonable management practices for the maintenance of ecosystem function. Robinia pseudoacacia plantations perform crucial functions in reconstituting the ecological integrity of disturbed ecosystems; however, soil microbial metabolic limitations in R. pseudoacacia plantations remain poorly understood. Herein, R. pseudoacacia plantations of four age classes (10, 22, 37, and 47 years old) were sampled in the loess hilly-gully region of northern Shaanxi Province in China. This study analyzed the effects of stand age on soil extracellular enzyme activities and soil microbial metabolic limitation. It also determined the main factor driving soil microbial metabolic limitation and extracellular enzyme activities. The results of ecoenzymatic stoichiometry showed that nitrogen (N) limited soil microbial metabolism in R. pseudoacacia plantations. Soil microbial metabolism at 10 and 22 years old were more carbon (C)- and N-limited than that at 37 and 47 years old. Except for N- and phosphorus (P)-acquiring enzyme activities at 10-20 cm, soil C-, N-, and P-acquiring enzyme activities (in 0-10 and 10-20 cm of soil) at 10 and 22 years old were significantly higher than those at 37 and 47 years old. The enzymatic ratio of C:N:phosphorus(P) acquisition in all R. pseudoacacia plantations, regardless of stand age and soil depth, deviated from 1:1:1. Soil nutrients explained most of the variation (90.80%) in soil extracellular enzyme activities based on variation-partitioning analysis. The partial least squares path model showed that soil nutrients had the highest total negative effect on microbial C limitation and microbial N/P limitation. Our results confirmed that microbial metabolic limitation was induced by soil resource deficits. The findings provide another visual that increases our understanding of soil microbial metabolic limitation in R. pseudoacacia plantations. |
| WOS关键词 | ECOENZYMATIC STOICHIOMETRY ; NUTRIENT LIMITATIONS ; NITROGEN DEPOSITION ; EXTRACTION METHOD ; FIXATION ; PLATEAU ; DRIVERS ; CARBON |
| 资助项目 | National Natural Science Foundation of China[41771556] ; Natural Science Foundation of China[2016YFC0501703] ; National Key Research and Development Plan of China |
| WOS研究方向 | Environmental Sciences & Ecology ; Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:001177967100001 |
| 出版者 | WILEY |
| 资助机构 | National Natural Science Foundation of China ; Natural Science Foundation of China ; National Key Research and Development Plan of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/203499]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Chen, Yunming |
| 作者单位 | 1.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess Pl, Yangling 712100, Shaanxi, Peoples R China 2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Min,Sun, Yarong,Liu, Shaohua,et al. Effect of stand age on soil microbial metabolic limitation and enzyme activities in Robinia pseudoacacia L. plantations in the loess hilly-gully region, China[J]. LAND DEGRADATION & DEVELOPMENT,2024:12. |
| APA | Zhao, Min,Sun, Yarong,Liu, Shaohua,Li, Yichun,&Chen, Yunming.(2024).Effect of stand age on soil microbial metabolic limitation and enzyme activities in Robinia pseudoacacia L. plantations in the loess hilly-gully region, China.LAND DEGRADATION & DEVELOPMENT,12. |
| MLA | Zhao, Min,et al."Effect of stand age on soil microbial metabolic limitation and enzyme activities in Robinia pseudoacacia L. plantations in the loess hilly-gully region, China".LAND DEGRADATION & DEVELOPMENT (2024):12. |
入库方式： OAI收割
来源：地理科学与资源研究所
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