Abiotic and biotic controls on dynamics of labile phosphorus fractions in calcareous soils under agricultural cultivation
文献类型：期刊论文
| 作者 | Li, Feng-Rui1,2,3; Liu, Lu-Lu1,2,3; Liu, Ji-Liang2; Yang, Kun2,3 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2019-09-01 |
| 卷号 | 681页码:163-174 |
| ISSN号 | 0048-9697 |
| 关键词 | Calcareous soils Labile phosphorus Land-use change Soil acidification Soil biota Phosphorus release |
| DOI | 10.1016/j.scitotenv.2019.05.091 |
| 通讯作者 | Li, Feng-Rui(lifengrui@lzb.ac.cn) |
| 英文摘要 | Soil labile inorganic and organic phosphorus (L-Pi and L-Po) extracted by NaHCO3 are potentially important sources of plant-available P. Their availability is strongly affected by soil physiochemical and biological properties. Here we conducted a field study in an arid region of northwestern China to investigate how L-Pi and L-Po dynamics are affected by changes in physiochemical and biological variables caused by agricultural cultivation of calcareous soils. Topsoils were sampled at multiple sites from natural calcareous grasslands and cultivated farmlands of different ages (32-40 vs. 90-100 years) that had been converted from natural grasslands. We measured L-Pi and L-Po concentrations and a set of key physiochemical (soil pH, concentrations of base cations (K+ + Na+ + Ca2+ + Mg2+), acid anions (Cl- + NO3- + SO42-), nitrate and ammonium nitrogen (N), organic carbon, and total P) and biological (soil microbial biomass carbon (C-mic), alkaline phosphatase activity (A(alp)), and abundances of soil macroinvertebrates (A(macro)) and mesoinvertebrates (A(meso))) variables. The concentration of L-Pi and L-Po was 484% and 128% higher and their proportion in the total P content was 354% and 78% higher in young farmland soils, whereas L-Pi and L-Po concentrations were 583% and 423% higher and their proportions were 353% and 240% higher in old farmland soils compared to grassland soils. Increases in L-Pi and L-Po attributable to soil P release may be driven by crucial processes of soil acidification-induced phosphate dissolution and soil biota-driven Po mineralisation. Path analyses revealed that L-Pi and L-Po dynamics were shaped by the complex interactions among five key controlling factors, soil pH, nitrate-N, A(meso), C-mic, and A(alp), involved in these crucial processes. We conclude that cultivation of calcareous soils significantly increases the availability of L-Pi and L-Po, emphasizing the importance of this land-use change as a regulator of P cycling in calcareous soils. (C) 2019 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | LAND-USE ; NITROGEN-FERTILIZATION ; INORGANIC P ; PHOSPHATE ; ACIDIFICATION ; AVAILABILITY ; MICROORGANISMS ; FOREST ; IMPACT ; ACCUMULATION |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE BV |
| WOS记录号 | WOS:000469847200015 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2555437 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Li, Feng-Rui |
| 作者单位 | 1.Chinese Acad Sci, Linze Inland River Basin Res Stn, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Gansu, Peoples R China 2.Chinese Acad Sci, Lab Ecol & Agr, Northwest Inst Eco Environm & Resources, Lanzhou 730000, Gansu, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Feng-Rui,Liu, Lu-Lu,Liu, Ji-Liang,et al. Abiotic and biotic controls on dynamics of labile phosphorus fractions in calcareous soils under agricultural cultivation[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019,681:163-174. |
| APA | Li, Feng-Rui,Liu, Lu-Lu,Liu, Ji-Liang,&Yang, Kun.(2019).Abiotic and biotic controls on dynamics of labile phosphorus fractions in calcareous soils under agricultural cultivation.SCIENCE OF THE TOTAL ENVIRONMENT,681,163-174. |
| MLA | Li, Feng-Rui,et al."Abiotic and biotic controls on dynamics of labile phosphorus fractions in calcareous soils under agricultural cultivation".SCIENCE OF THE TOTAL ENVIRONMENT 681(2019):163-174. |
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来源：寒区旱区环境与工程研究所
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