Quantifying the impact of drought on soil-plant interactions: a seasonal analysis of biotic and abiotic controls of carbon and nutrient dynamics in high-altitudinal grasslands
文献类型：期刊论文
| 作者 | Wang, Zhiyuan; Silva, Lucas C. R.; Sun, Geng; Luo, Peng; Mou, Chengxiang; Horwath, William R. |
| 刊名 | PLANT AND SOIL
 |
| 出版日期 | 2015 |
| 卷号 | 389期号:42371页码:59-71 |
| 关键词 | EXTREME CLIMATIC EVENTS QINGHAI-TIBETAN PLATEAU MICROBIAL BIOMASS-C DIFFERENTIAL RESPONSES EXTRACTION METHOD WEATHER EVENTS CO2 EXCHANGE ECOSYSTEMS FOREST WATER |
| 产权排序 | 1 |
| 通讯作者 | Sun, G (reprint author), Chinese Acad Sci, Chengdu Inst Biol, Key Lab Mt Ecol Restorat & Bioresource Utilizat, 9 Sect 4,Renmin Rd S, Chengdu, Sichuan, Peoples R China. |
| 合作状况 | 国际 |
| 英文摘要 | Understanding the impacts of ever more severe and widespread drought events has become a central focus of recent ecological research. Accordingly, the objective of this study is to investigate fundamental mechanisms that control drought effects on climate sensitive ecosystems by regulating soil-plant interactions. Field experiments were conducted in high altitudinal grasslands of the Tibetan Plateau. Based on historical records, we simulated extreme drought events, intercepting water inputs in early (spring), mid (summer), and late (autumn) periods of the plant-growing season (PGS). We measured vegetation responses to changes in soil physical, chemical, and biological properties, examining how the interplay of abiotic and biotic processes regulate the impacts of drought above and below ground. Decreasing water input resulted in proportional increases in summer and autumn soil temperature, but reduced soil temperature during the spring drought. As a result, soil microbial biomass and available N and P concentrations remained stable during the early-PGS drought, while enzymatic activity, decomposition of organic materials, and nutrient release increased during the mid- and late-PGS. Concerted changes in microbial and plant activity determined seasonal fluctuations in carbon assimilation, microbial activity and nutrient dynamics, with varying degrees of resistance and resilience to drought stress observed at different PGS periods. Significant interactions were observed between plant productivity and microbial activity in response to moisture variability and associated changes in soil temperature, with the largest deleterious drought effects registered during the summer, when competition for limiting resources between plants and microorganisms was strongest. |
| 学科主题 | Agriculture; Plant Sciences |
| 类目[WOS] | Agronomy ; Plant Sciences ; Soil Science |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://210.75.237.14/handle/351003/27529]  |
| 专题 | 成都生物研究所_生态研究 |
| 推荐引用方式 GB/T 7714 | Wang, Zhiyuan,Silva, Lucas C. R.,Sun, Geng,et al. Quantifying the impact of drought on soil-plant interactions: a seasonal analysis of biotic and abiotic controls of carbon and nutrient dynamics in high-altitudinal grasslands[J]. PLANT AND SOIL,2015,389(42371):59-71. |
| APA | Wang, Zhiyuan,Silva, Lucas C. R.,Sun, Geng,Luo, Peng,Mou, Chengxiang,&Horwath, William R..(2015).Quantifying the impact of drought on soil-plant interactions: a seasonal analysis of biotic and abiotic controls of carbon and nutrient dynamics in high-altitudinal grasslands.PLANT AND SOIL,389(42371),59-71. |
| MLA | Wang, Zhiyuan,et al."Quantifying the impact of drought on soil-plant interactions: a seasonal analysis of biotic and abiotic controls of carbon and nutrient dynamics in high-altitudinal grasslands".PLANT AND SOIL 389.42371(2015):59-71. |
入库方式： OAI收割
来源：成都生物研究所
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