干旱区生态环境知识资源中心(Arid): Interacting effects of urea and water addition on soil mineral-bound phosphorus dynamics in semi-arid grasslands with different land-use history

Arid

DOI	10.1111/ejss.13046
	Interacting effects of urea and water addition on soil mineral-bound phosphorus dynamics in semi-arid grasslands with different land-use history
	Wang, Ruzhen; Liu, Heyong; Sardans, Jordi; Feng, Xue; Xu, Zhuwen; Penuelas, Josep
通讯作者	Wang, RZ
来源期刊	EUROPEAN JOURNAL OF SOIL SCIENCE
ISSN	1351-0754
EISSN	1365-2389
英文摘要	Nitrogen (N) addition and precipitation increment can greatly influence soil phosphorus (P) dynamics, with much emphasis on total and available P, yet little is known about their interactive effects on soil mineral-bound inorganic P (P-i) fractions under different historical land uses of grasslands and old fields. Thus, we compared (i) plant readily available P, (ii) less available P-i(sum of NH4F-extractable P-i, NaOH-Na2CO3-extractable P(i)and NaHCO3-extracted P-i), (iii) refractory forms of P-i(NH4Ac-extractable P-i, H2SO4-extractable P(i)and Na-3(citrate)-dithionite-extractable P-i) and (iv) organic P under the same urea and water treatments in an old-field grassland with a semi-arid steppe. Soil total P remained unchanged with 10-year urea addition in both sites, with lower organic P but higher P(i)concentrations in the old field. Urea addition promoted transformation of refractory P(i)into less available P(i)in both sites, which potentially was related to higher plant productivity and thus enhanced plant P accumulation. Specifically, urea addition increased less available P(i)fractions by as much as 42%, but decreased refractory P(i)fractions by as much as 24%, for two sites under ambient precipitation. Water addition decreased less available P(i)in the steppe under higher urea addition rates, whereas it increased less available and refractory P(i)but only in the control plot of the old field. Irrespective of urea and water treatments, the old field had a higher P(i)pool, which could replenish plant readily available P in the longer term and be less prone to P-limitation than the steppe. We conclude that conversion of semi-arid steppe to farmland causes long-term increases in the soil P(i)pool, possibly by enhancing organic P mineralization and anthropogenic fertilization during cultivation. Urea addition accelerated soil P cycling via promoting refractory P-i, transforming into less available P-i, with the process being strongly mediated by water availability, whereas the projected precipitation increment could decrease less available P(i)via promoting plant P uptake and P leaching out of the plant-soil system. Highlights Urea addition promoted transformation of refractory P(i)into less available P(i)fractions. Water addition counteracted the positive urea effect on NH4F-P(i)in both steppe and old field. Less responsive organic P suggested that P(i)fractions were more essential in soil P cycling. Water addition decreased NH4F-P(i)in both sites, potentially due to higher plant uptake and leaching. Conversion of steppe to farmland increased the soil P(i)pool by enhancing organic P mineralization.
英文关键词	available phosphorus land-use change nitrogen fertilization precipitation increment recalcitrant phosphorus semi-arid grassland
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000573657600001
WOS关键词	INORGANIC PHOSPHORUS ; NITROGEN DEPOSITION ; CALCAREOUS SOIL ; ORGANIC-MATTER ; P-FRACTIONS ; 4 DECADES ; AVAILABILITY ; STOICHIOMETRY ; LIMITATION ; FOREST
WOS类目	Soil Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/328284
作者单位	[Wang, Ruzhen; Liu, Heyong; Feng, Xue] Chinese Acad Sci, Inst Appl Ecol, Erguna Forest Steppe Ecotone Ecosyst Res Stn, Shenyang, Peoples R China; [Liu, Heyong; Feng, Xue] Shenyang Agr Univ, Coll Land & Environm, Shenyang, Peoples R China; [Sardans, Jordi; Penuelas, Josep] UAB, CSIC, CREAF, Global Ecol Unit, Bellaterra, Spain; [Sardans, Jordi; Penuelas, Josep] CREAF, Cerdanyola Del Valles, Spain; [Xu, Zhuwen] Inner Mongolia Univ, Sch Ecol & Environm, Key Lab Grassland Ecol, Hohhot, Peoples R China
推荐引用方式 GB/T 7714	Wang, Ruzhen,Liu, Heyong,Sardans, Jordi,et al. Interacting effects of urea and water addition on soil mineral-bound phosphorus dynamics in semi-arid grasslands with different land-use history[J].
APA	Wang, Ruzhen,Liu, Heyong,Sardans, Jordi,Feng, Xue,Xu, Zhuwen,&Penuelas, Josep.
MLA	Wang, Ruzhen,et al."Interacting effects of urea and water addition on soil mineral-bound phosphorus dynamics in semi-arid grasslands with different land-use history".EUROPEAN JOURNAL OF SOIL SCIENCE