文献类型：期刊文献

英文题名：Phosphorus accumulation poses less influence than soil physicochemical properties on organic phosphorus adsorption on ferrasol

作者：Li, Meng[1,2,3,4] Kang, Enze[1,2] Wang, Jinzhi[1,2] Yan, Zhongqing[1,2] Zhang, Kerou[1,2] Hu, Zhengyi[3,4] Kang, Xiaoming[1,2]

第一作者：李猛;Li, Meng

通信作者：Kang, XM[1]

机构：[1]Chinese Acad Forestry, Inst Wetland Res, Beijing 100091, Peoples R China;[2]Beijing Key Lab Wetland Serv & Restorat, Beijing 100091, Peoples R China;[3]Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China;[4]Univ Chinese Acad Sci, Sino Danish Coll, Beijing 100049, Peoples R China

年份：2021

卷号：402

外文期刊名：GEODERMA

收录：;EI(收录号：20212810614757);Scopus(收录号：2-s2.0-85109208313);WOS:【SCI-EXPANDED(收录号:WOS:000670660600026)】；

基金：This work was jointly supported by the National Natural Science Foundation of China (Grant No. 41877421, U1133604).

语种：英文

外文关键词：Organic phosphorus (OP); Phosphorus (P) supply; Adsorption kinetics; Ferrasol; P accumulation

摘要：Organic phosphorus (OP) serves as a significant pool of phosphorus (P) in Ferrasol, and OP adsorption strongly affects soil P bioavailability and mobility. However, little is known on how OP adsorption is affected by P accumulation, which occurs in many ferrasols. Here, we examined the adsorption characteristics of representative compounds of seven P forms on ferrasol with and without P accumulation by conducting adsorption experiments followed by Fourier transform infrared (FT-IR), X-ray diffraction (XRD), and selective extraction. Four OP compounds (2-phosphonobutane-1, 2, 4-tricarboxylic acid [PBTCA], beta-glycerol phosphate [BGP], DNA, and adenosine 5'-triphosphate [ATP]) and three inorganic P compounds (disodium hydrogen phosphate [OrthoP], tetrasodium pyrophosphate [TSPP], and sodium tripolyphosphate [TPP]) were used to represent phosphonates, monoesters, diesters, organic polyphosphate, orthophosphate, pyrophosphate, and inorganic polyphosphate, respectively. Ferrasol strongly adsorbed all seven P compounds with the adsorption capacity being ranked in order as follows: PBTCA > BGP > OrthoP and TPP > ATP, DNA, and TSPP. Oxalate-extractable iron (Fe-ox) and aluminum (Al-ox) positively correlated with the adsorption of BGP, OrthoP and PBTCA and were conducive to Fe/Al-bound P in ferrasols as evaluated by selective extraction. Soil total P had no significant relationship with P adsorption capacity, but P accumulation reduced the adsorption capacity of ATP and TPP. In contrast, Ca had a greater effect on the increase of the adsorption of PBTCA, BGP, DNA, TSPP, and ATP. FT-IR and XRD analysis showed that kaolinite may contribute to the adsorption of all seven P compounds while montmorillonites and quartz were the primary minerals for the adsorption of BGP and DNA, respectively. It can be concluded that the effect of P accumulation is less pronounced than the soil physicochemical properties in ferrasol.