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Nitrogen enrichment buffers phosphorus limitation by mobilizing mineral-bound soil phosphorus in grasslands | |
Wang, Ruzhen1; Yang, Junjie; Liu, Heyong1; Sardans, Jordi2,3; Zhang, Yunhai; Wang, Xiaobo1; Wei, Cunzheng; Lu, Xiaotao1; Dijkstra, Feike A.; Jiang, Yong1,5; Han, Xingguo6; Penuelas, Josep2,3 | |
2022 | |
发表期刊 | ECOLOGY |
ISSN | 0012-9658 |
卷号 | 103期号:3 |
摘要 | Phosphorus (P) limitation is expected to increase due to nitrogen (N)-induced terrestrial eutrophication, although most soils contain large P pools immobilized in minerals (P-i) and organic matter (P-o). Here we assessed whether transformations of these P pools could increase plant available pools alleviating P limitation under enhanced N availability. The mechanisms underlying these possible transformations were explored by combining results from a 10-year field N addition experiment and a 3700-km transect covering wide ranges in soil pH, soil N, aridity, leaching, and weathering that could affect soil P status in grasslands. Nitrogen addition promoted the dissolution of immobile P-i (mainly Ca-bound recalcitrant P) to more available forms of P-i (including Al- and Fe-bound P fractions and Olsen P) by decreasing soil pH from 7.6 to 4.7, but did not affect P-o. Soil total P declined by 10% from 385 +/- 6.8 to 346 +/- 9.5 mg kg(-1), whereas available P increased by 546% from 3.5 +/- 0.3 to 22.6 +/- 2.4 mg kg(-1) after the 10-year N addition, associated with an increase in P-i mobilization, plant uptake, and leaching. Similar to the N addition experiment, the drop in soil pH from 7.5 to 5.6 and increase in soil N concentration along the grassland transect were associated with an increased ratio between relatively mobile P-i and immobile P-i. Our results provide a new mechanistic understanding of the important role of soil P-i mobilization in maintaining plant P supply and accelerating biogeochemical P cycles under anthropogenic N enrichment. This mobilization process temporarily buffers ecosystem P limitation or even causes P eutrophication, but will extensively deplete soil P pools in the long run. |
关键词 | climosequence mineral-bound phosphorus nitrogen deposition phosphorus limitation phosphorus mobilization precipitation gradient |
学科领域 | Ecology |
DOI | 10.1002/ecy.3616 |
收录类别 | SCI |
语种 | 英语 |
WOS关键词 | CALCAREOUS SOIL ; P-FRACTIONS ; 4 DECADES ; PRODUCTIVITY ; PHOSPHATE ; CARBON ; AVAILABILITY ; RESPONSES ; BIODIVERSITY ; ACQUISITION |
WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
WOS记录号 | WOS:000751823700001 |
出版者 | WILEY |
文献子类 | Article |
出版地 | HOBOKEN |
EISSN | 1939-9170 |
资助机构 | European Research Council Synergy grant [ERC-SyG2013-610028 IMBALANCE-P] ; National Key Research and Development Program of China [2016YFC0500707] ; National Natural Science Foundation of China [31430016, 31770525, 31870441] ; Spanish government grant [PID2019-110521GB-I00] |
作者邮箱 | xghan@ibcas.ac.cn |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ibcas.ac.cn/handle/2S10CLM1/28897 |
专题 | 植被与环境变化国家重点实验室 |
作者单位 | 1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Appl Ecol, Erguna Forest Steppe Ecotone Ecosyst Res Stn, Shenyang, Peoples R China 3.CREAF CSIC UAB, Global Ecol Unit, CSIC, Bellaterra, Spain 4.CREAF, Cerdanyola Del Valles, Spain 5.Dijkstra, Feike A.] Univ Sydney, Sydney Inst Agr, Sch Life & Environm Sci, Camden, NSW, Australia 6.Hebei Univ, Sch Life Sci, Baoding, Peoples R China 7.Univ Chinese Acad Sci, Coll Adv Agr Sci, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, Ruzhen,Yang, Junjie,Liu, Heyong,et al. Nitrogen enrichment buffers phosphorus limitation by mobilizing mineral-bound soil phosphorus in grasslands[J]. ECOLOGY,2022,103(3). |
APA | Wang, Ruzhen.,Yang, Junjie.,Liu, Heyong.,Sardans, Jordi.,Zhang, Yunhai.,...&Penuelas, Josep.(2022).Nitrogen enrichment buffers phosphorus limitation by mobilizing mineral-bound soil phosphorus in grasslands.ECOLOGY,103(3). |
MLA | Wang, Ruzhen,et al."Nitrogen enrichment buffers phosphorus limitation by mobilizing mineral-bound soil phosphorus in grasslands".ECOLOGY 103.3(2022). |
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