Influence of rare earth elements on chemical transformation of nitrogen in agricultural soil

Abstract

Abstract: Soil available N,NH₄⁺-N and NO₃^--N contents and soil urease activity were measured after application of rave earth elements(REEs).The results showed that the contents of soil available N and NH₄⁺-N were affected by application of REEs,being significantly differed from those in the control when the dosage was higher than 5mg·kg^-1 dry soil.However,soil NO₃^--N content in treated plots did not differed from that in the control.No observed effect concentration(NOEC)for the potential influnence of REEs on the chemical transformation and availability of soil available nitrogen was found to be 5mg·kg^-1 dry soil.The decrease of soil available N concentration was found closely correlated to the inhibition of soil urease activity(R 2=0.87).It was suggested that the inhibition effect of REEs on the enzymatic nitrogen mineralization should be one of the major causes for the decline of soil available nitrogen concentration.The decrease of available nitrogen concentration occured shortly after REEs application,indicating that there should be a self-regulation process to maintain the available nitrogen concentration in soil.

CLC Number:

S143

LIU Dingfang, WANG Zijian . Influence of rare earth elements on chemical transformation of nitrogen in agricultural soil[J]. Chinese Journal of Applied Ecology, 2001, 12(4): 545-548.

References

[1] Brown PH, Rathjen AH, Graham RD and Tribe DE. 1990. Rare earthelements in biological systems. In:Gschneidner Jr KA and Eyring Leds. Handbook on the Physic and Chemistry of Rare Earths(Vol 13).Amesterdam:Elsevier Science Publisher. 423～452

[2] Chang J(常江).1991. Influence of Lanthanum on membrane permeability and nutrient uptake of rice and wheat. Letter Plant Physiol(植物生理学通讯),27(1):17～21(in Chinese)

[3] Germund T. 1976. Influence of vanadium on soil phosphatase activity.J Environ Qual,5(2):216～217

[4] Hu G-R(胡桂荣),Li Y-L(李玉林).1990. Primary study on the influence of heavy metals on soil biological activity. Environ Protec Agric(农业环境保护),9(4):6～9(in Chinese)

[5] Kim HT. 1996. Soil sampling preparation and analysis. New York:Marcel Dekker, INC. 135～152

[6] Liang CN and Tabatabai MA. 1977. Effects of trace element on nitrogen mineralization in soils. Environ Pollu, 12:143～147

[7] Liang CN and Tabatabai MA. 1978. Effects of trace element on nitrification in soils. J Environ Qual, 17(2):291～293

[8] Liu D-F(刘定芳)and Wang Z-J(王子健).1999. Influences of application of rare-earth elements on plant uptake and utilization of other element. J Chin Rare Earth Soc(中国稀土学报),17:537～542(inChinese)

[9] Liu S-J(刘书娟),Wang L-J(王立军)and Zhang S(章申)1997. Effect of long-term foliage-dressing rare elements(REEs)ontheir distribution, accumulation and translocation in soil spring wheatsystem. Chin J Appl Ecol(应用生态学报),8(1):55～58(in Chinese)

[10] Liu S-J(刘书娟),Wang Y-Q(王玉琦)and Zhang S(章申).1997.Influences of long-term application of rare-earth elements on their accumulation and distribution in wheat. Acta Ecol Sin(生态学报),17(5):483～487(in Chinese)

[11] Lu P(鲁鹏),Wang Z-J(王子健),Wang W-H(王文华)1997. Concentration distribution of rare-earth elements in atmosphere,rainfall, surface runoff and soil in an experimental plot in Huabei areaand the influences of application of rare-earth elements. J Chin Rare(中国稀土学报),15(2):155～159(in Chinese)

[12] Nanjing Agricultural University(南京农业大学).1992. Method forAnalysis of Agricultural Chemical Parameters in Soil. Beijing:Agricultural Press. 55～57(in Chinese)

[13] OECD. 1984. Terrestrial plants, growth test. In:OECD Guideline forTesting of Chemicals. 208

[14] Pang A(彭安)and Wang Z-J(王子健).1995. Recent researchprogress in environmental chemistry of rare-earth elements. Progr En(环境科学进展),3(4):22～32(in Chinese)

[15] Todorovsky DS, Minkova L and Dariena PB. 1997. Effect of the application of superphosphate on rare earths' content in the soil. The SciTotal Environ, 203, 13～16

[16] Wang Z, Lu P and Liu D. 1998. Primary assessment of the effects ofapplying rare-earth elements on soil integrity. In:Guicherit R eds. Proceeding of Second Sino-Dutch Workshop on the Environmental Behavior and Ecotoxicology of Rare Earth Element and Heavy Metals.Delft:TNO Publisher. 110～124

[17] Wu S-Y(吴松荫).1986. Soil Enzymes and Methodology. Beijing:A-gricultural Press. 296～297(in Chinese)

[18] Xu J-L(许嘉琳)and Yang J-R(杨居荣).1995. Heavy Metals in Terrestrial Ecosystem. Beijing:China Environmental Science and Technology Press. 293～313(in Chinese)

[19] Yang M-J(杨明杰),Lin X-Y(林咸永)and Yang X-E(杨肖娥).1998. Impact of Cd on growth and nutrient accumulation of differentplant species. Chin J Appl Ecol(应用生态学报),9(1):89～94(inChinese)

[20] Zhang Z-D(张在德),Peng T(彭涛),Xia J-Z(夏吉珍)et al. 1990.Influence of rare-earth elements on seedling and plant uptake of NO₃^-and K*. Rare-earth(稀土),(2):26～28(in Chinese)