Effects of fertilization and water addition on soil acid neutralizing capacity in an old-field grassland

doi:10.13287/j.1001-9332.202005.010

Abstract

Abstract: Increasing nitrogen (N) deposition results in soil acidification in grasslands. Acid buffering capacity of soil is a critical index evaluating soil acidification, the response of which to N input is regulated by precipitation and concentration of other limiting elements. To explore the responses of soil acidification to N, phosphorus (P), and water inputs, we conducted a 13-year field experiment in an old-field grassland and calculated the acid buffering capacity (ABC) and acid neutralizing capacity (ANC) at the reference of pH=5.0 (ANC_pH5.0) and 4.0 (ANC_pH4.0), using quadratic curve fitting model. The results showed that, without water addition, single N addition or combined with P addition significantly decreased soil pH, ANC_pH5.0 and ANC_pH4.0, whereas single P addition had no significant effect on soil pH, ANC_pH5.0 or ANC_pH4.0. With water addition, the addition of N or combined with P decreased soil pH, ANC_pH5.0 and ANC_pH4.0, whereas P addition decreased soil pH, increased ANC_pH4.0, without effect on ANC_pH5.0. In contrast with treatments without water addition, water addition had positive effects on soil pH, ANC_pH5.0 and ANC_pH4.0. For soils with different initial soil pH values, it was better to select ANC rather than ABC as an index to evaluate soil anti-acidification capacity.

Key words: soil acidification, soil acid buffering capacity, acid titration curve, nutrient balance

MENG Ya-ni, LI Tian-peng, SHI Zhan, CAI Jiang-ping, XU Zhu-wen, JIANG Yong. Effects of fertilization and water addition on soil acid neutralizing capacity in an old-field grassland[J]. Chinese Journal of Applied Ecology, 2020, 31(5): 1579-1586.

References

[1] 沈海花, 朱言坤, 赵霞, 等. 中国草地资源的现状分析. 科学通报, 2016, 61(2): 139-154 [Shen H-H, Zhu Y-K, Zhao X, et al. Analysis of current grassland resources in China. Chinese Science Bulletin, 2016, 61(2): 139-154]
[2] Ackerman D, Millet DB, Chen X. Global estimates of inorganic nitrogen deposition across four decades. Global Biogeochemical Cycles, 2019, 33: 100-107
[3] Yang YH, Ji CJ, Ma WH, et al. Significant soil acidification across northern China’s grasslands during 1980s-2000s. Global Change Biology, 2012, 18: 2292-2300
[4] Lu XK, Mao QG, Gilliam FS, et al. Nitrogen deposition contributes to soil acidification in tropical ecosystems. Global Change Biology, 2014, 20: 3790-7801
[5] Lawrence GB, David MB, Shortle WC. A new mechanism for calcium loss in forest-floor soils. Nature, 1995, 378: 162-165
[6] Mitchell AD, Smethurst PJ. Base cation availability and leaching after nitrogen fertilisation of a eucalypt plantation. Soil Research, 2008, 46: 445-454
[7] Chen DM, Lan ZC, Bai X, et al. Evidence that acidification-induced declines in plant diversity and producti-vity are mediated by changes in below-ground communities and soil properties in a semi-arid steppe. Journal of Ecology, 2013, 101: 1322-1334
[8] 周健民, 沈仁芳. 土壤学大辞典. 北京: 科学出版社, 2013: 313-314 [Zhou J-M, Shen R-F. Dictionary of Soil Science. Beijing: Science Press, 2013: 313-314]
[9] Luo WT, Nelson PN, Li MH, et al. Contrasting pH buffering patterns in neutral-alkaline soils along a 3600 km transect in northern China. Biogeosciences, 2015, 12: 7047-7056
[10] Conyers MK, Heenan DP, Poile GJ, et al. Influence of dryland agricultural management practices on the acidification of a soil profile. Soil and Tillage Research, 1996, 37: 127-141
[11] Tanikawa T, Sobue A, Hirano Y. Acidification processes in soils with different acid buffering capacity in Cryptomeria japonica and Chamaecyparis obtusa forests over two decades. Forest Ecology and Management, 2014, 334: 284-292
[12] Lieb AM, Darrouzet-nardi A, Bowman WD. Nitrogen deposition decreases acid buffering capacity of alpine soils in the southern Rocky Mountains. Geoderma, 2011, 164: 220-224
[13] Tian DS, Niu SL. A global analysis of soil acidification caused by nitrogen addition. Environmental Research Letters, 2015, 10: 024019
[14] Lucas RW, Klaminder J, Futter MN, et al. A meta-analysis of the effects of nitrogen additions on base cations: Implications for plants, soils, and streams. Forest Ecology and Management, 2011, 262: 95-104
[15] Cai JP, Luo WT, Liu HY, et al. Precipitation-mediated responses of soil acid buffering capacity to long-term nitrogen addition in a semi-arid grassland. Atmospheric Environment, 2017, 170: 312-318
[16] Li Y, Niu SL, Yu GR. Aggravated phosphorus limitation on biomass production under increasing nitrogen loa-ding: A meta-analysis. Global Change Biology, 2016, 22: 934-943
[17] 陈继辉, 李炎朋, 熊雪, 等. 氮磷添加对草地土壤酸度和化学计量学特征的影响. 草业科学, 2017, 34(5): 943-949 [Chen J-H, Li Y-P, Xiong X, et al. Effect of nitrogen and phosphorus addition on soil acifity and stoichiometry characteristics in a typicai temperate grassland in Inner Mongolia. Pratacultural Science, 2017, 34(5): 943-949]
[18] Ding YH, Ren GY, Zhao ZC, et al. Detection, causes and projection of climate change over China: An overview of recent progress. Advances in Atmospheric Sciences, 2007, 24: 954-971
[19] 刘纪远, 张增祥, 徐新良, 等. 21世纪初中国土地利用变化的空间格局与驱动力分析. 地理学报, 2009, 64(12): 1411-1420 [Liu J-Y, Zhang Z-X, Xu X-L, et al. Spatial patterns and driving forces of land use change in China in the early 21st century. Acta Geographica Sinica, 2009, 64(12): 1411-1420]
[20] 李兴华, 魏玉荣, 张存厚. 内蒙古草地面积的变化及其成因分析——以锡林郭勒盟多伦县为例. 草业科学, 2012, 29(1): 19-24 [Li X-H, Wei Y-R, Zhang C-H. Variation of grassland area and its cause in Inner Mongolia: A case study on Duolun County of Xilin Gol League. Pratacultural Science, 2012, 29(1): 19-24]
[21] 徐柱文. 水、肥添加对内蒙古农牧交错不同土地利用历史的草地群落结构和稳定性的影响. 博士论文. 北京: 中国科学院大学, 2009 [Xu Z-W. Effects of Water and Fertilizer Addition on Community Structure and Stability of Different Land-use Historical Grassland in an Agro-pastoral Ecotone in Inner Mongolia. PhD Thesis. Beijing: University of Chinese Academy of Sciences, 2009]
[22] 姜勇, 徐柱文, 王汝振, 等. 长期施肥和增水对半干旱草地土壤性质和植物功能性状的影响. 应用生态学报, 2019, 30(7): 2470-2480 [Jiang Y, Xu Z-W, Wang R-Z, et al. Effects of long-term fertilization and water addition on soil properties and plant community characteristics in a semi arid grassland. Chinese Journal of Applied Ecology, 2019, 30(7): 2470-2480]
[23] 鲁如坤. 土壤农业化学分析方法. 北京: 中国农业科技出版社, 2000 [Lu R-K. Analytical Method of Soil Agricultural Chemistry. Beijing: China Agricultural Science and Technology Press, 2000]
[24] Bowman WD, Cleveland CC, Halada L＇, et al. Negative impact of nitrogen deposition on soil buffering capacity. Nature Geoscience, 2008, 1: 767-770
[25] Harpole WS, Ngai JT, Cleland EE, et al. Nutrient co-limitation of primary producer communities. Ecology Letters, 2011, 14: 852-862
[26] Knapp AK, Briggs JM, Koelliker JK. Frequency and extent of water limitation to primary production in a Mesic temperate grassland. Ecosystems, 2001, 4: 19-28
[27] Wang RZ, Dorodnikov M, Yang S, et al. Responses of enzymatic activities within soil aggregates to 9-year nitrogen and water addition in a semi-arid grassland. Soil Biology & Biochemistry, 2015, 81: 159-167
[28] 郭全恩, 王益权, 郭天文, 等. 半干旱地区环境因子与果园表层土壤水溶性Na⁺累积的关系. 生态环境学报, 2008, 17(6): 2391-2396 [Guo Q-E, Wang Y-Q, Guo T-W, et al. Relationship between environment factors and orchard topsoil water-solubility sodium accumulation in semi-arid regions in China. Ecology and Environment, 2008, 17(6): 2391-2396]
[29] 刘伟, 尚庆昌. 长春地区不同类型土壤的缓冲性及其影响因素. 吉林农业大学学报, 2001, 23(3): 78-82 [Liu W, Shang Q-C. Buffer action and its influencing factors of different types of soil in Changchun region. Journal of Jilin Agricultural University, 2001, 23(3): 78-82]
[30] Wang RZ, Dorodnikov M, Dijkstra F, et al. Sensitivities to nitrogen and water addition vary among microbial groups within soil aggregates in a semi-arid grassland. Biology and Fertility of Soils, 2017, 53: 129-140
[31] 姜军, 徐仁扣, 赵安珍, 等. 用酸碱滴定法测定酸性红壤的pH缓冲容量. 土壤通报, 2006, 37(6): 1247-1248 [Jiang J, Xu R-K, Zhao A-Z, et al. Determination of pH buffer capacity of acid red soils by acid-base titration. Chinese Journal of Soil Science, 2006, 37(6): 1247-1248]
[32] Nelson PN, Su N. Soil pH buffering capacity: A descriptive function and its application to some acidic tro-pical soils. Soil Research, 2010, 48: 201-207
[33] 胡波, 王云琦, 王玉杰, 等. 模拟氮沉降对土壤酸化及土壤酸缓冲能力的影响. 环境科学研究, 2015, 28(3): 418-424 [Hu B, Wang Y-Q, Wang Y-J, et al. Effects of simulated nitrogen deposition on soil acidification and soil buffering capacity. Research of Environmental Sciences, 2015, 28(3): 418-424]
[34] 孟红旗, 徐明岗, 吕家珑, 等. 用二次曲线拟合表征土壤酸中和能力的研究. 农业环境科学学报, 2013, 32(1): 29-35 [Meng H-Q, Xu M-G, Lyu J-L, et al. Evaluation of acid-neutralizing capacity of topsoil in croplands using quadratic curve fitting. Journal of Agro-Environment Science, 2013, 32(1): 29-35]
[35] Zhang YY, Zhang S, Wang RZ, et al. Impacts of fertilization practices on pH and the pH buffering capacity of calcareous soil. Soil Science and Plant Nutrition, 2016, 62: 432-439