Chronic drought alters extractable concentrations of mineral elements in Mediterranean forest soils
文献类型：期刊论文
| 作者 | Mu, Zhaobin2,3,4,5,6; Asensio, Dolores1,6; Sardans, Jordi5,6; Ogaya, Roma5,6; Llusia, Joan5,6; Filella, Iolanda5,6; Liu, Lei7; Wang, Xinming2,3,4,8; Penuelas, Josep5,6 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2023-12-20 |
| 卷号 | 905页码:12 |
| 关键词 | Chronic drought Seasonality Mediterranean holm oak forest Soil mineral elements Extractable concentrations Soil water content |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2023.167062 |
| 英文摘要 | Soil mineral elements play a crucial role in ecosystem productivity and pollution dynamics. Climate models project an increase in drought severity in the Mediterranean Basin in the coming decades, which could lead to changes in the composition and concentrations of mineral elements in soils. These changes can have significant impacts on the fundamental processes of plant-soil cycles. While previous studies have predominantly focused on carbon, nitrogen, and phosphorus, there is a notable lack of research on the biogeochemical responses of other mineral elements to increasing drought. In this study, we investigated the effects of chronic drought (15 years of experimental rainfall exclusion) and seasonal drought (summer period) on the extractable soil concentrations of 17 mineral elements (arsenic (As), calcium (Ca), cadmium (Cd), chromium (Cr), copper (Cu), iron (Fe), mercury (Hg), potassium (K), magnesium (Mg), manganese (Mn), molybdenum (Mo), nickel (Ni), lead (Pb), sulphur (S), strontium (Sr), vanadium (V) and zinc (Zn)) in a Mediterranean holm oak forest. We also explored the potential biotic and abiotic mechanisms underlying the changes in extractable elemental concentrations under chronic drought conditions. Our findings reveal that soil elemental concentrations varied significantly due to seasonal changes and chronic drought, with soil microclimate, biological activity, and organic matter being the main drivers of this variability. Levels of soil water content primarily explained the observed variations in soil elemental concentrations. Most of the mineral elements (13 out of 17) exhibited higher concentrations during winter-spring (wet seasons) compared to summer-autumn (dry seasons). The chronic drought treatment resulted in K limitation, increasing vegetation vulnerability to drought stress. Conversely, the accumulation of S in soils due to drought may intensify the risk of S losses from the plant-soil system. Under drought conditions, certain trace elements (particularly Mn, V, and Cd) exhibited increased extractability, posing potential risks to plant health and the exportation of these elements into continental waters. Overall, our results suggest that alterations in mineral element concentrations under future drier conditions could promote ecosystem degradation and pollution dispersion in the Mediterranean Basin. Understanding and predicting these changes are essential for effective ecosystem management and mitigating the potential negative impacts on plant health and water quality. |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001080506400001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/74908]  |
| 专题 | 有机地球化学国家重点实验室 |
| 通讯作者 | Asensio, Dolores |
| 作者单位 | 1.Free Univ Bozen Bolzano, Fac Sci & Technol, I-39100 Bolzano, Italy 2.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Key Lab Environm Protect & Resources Uti, Guangzhou 510640, Peoples R China 4.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China 5.CREAF, Barcelona 08193, Catalonia, Spain 6.CSIC, Global Ecol CREAF CSIC UAB, Barcelona 08193, Catalonia, Spain 7.Nanjing Univ Informat Sci & Technol, Inst Ecol, Jiangsu Key Lab Agr Meteorol, Nanjing 210044, Peoples R China 8.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Mu, Zhaobin,Asensio, Dolores,Sardans, Jordi,et al. Chronic drought alters extractable concentrations of mineral elements in Mediterranean forest soils[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2023,905:12. |
| APA | Mu, Zhaobin.,Asensio, Dolores.,Sardans, Jordi.,Ogaya, Roma.,Llusia, Joan.,...&Penuelas, Josep.(2023).Chronic drought alters extractable concentrations of mineral elements in Mediterranean forest soils.SCIENCE OF THE TOTAL ENVIRONMENT,905,12. |
| MLA | Mu, Zhaobin,et al."Chronic drought alters extractable concentrations of mineral elements in Mediterranean forest soils".SCIENCE OF THE TOTAL ENVIRONMENT 905(2023):12. |
入库方式： OAI收割
来源：广州地球化学研究所
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