Soil acid-base buffering in the step agriculture lands
O. O. Ozhovan, V. I. Mikhaylyuk
Modern studies of chernozem soils in the northwestern Black Sea region have shown intense dehumification due to disruption of biogeochemical cycles caused by anthropogenic removal of organic matter and associated biophile elements. At former time, the humus zoning was typical for southern chernozems and now we noted the smoothing of this zoning. Acid-base buffering has a significant role in counteracting degradation processes, the buffering parameters could be integral indicators of soil chemicals balance. We studied the automorphic soils (arable chernozems) of the northwestern Black Sea region, their humus state, particle size distribution, and acid-base buffering parameters. We studied ordinary modal and micellar-carbonate chernozems on arable land and 40-year-old fallows, southern chernozems removed from irrigation 15 years ago and southern carbonate chernozems of the second floodplain terrace of the Danube River.
We determined the neutralization index, degree of buffering capacity in the acid and alkaline ranges, equilibrium coefficient, and sodium absorption ratio to characterize the acid-base buffering. The studied soils belong to stable buffer agriculture lands by their acid-base buffer ability. We determined that soils have the parameters of chernozem type: low humus content, humate and humate-fulvate type of humus, average content of insoluble residue, high degree of humification, heavy-medium loam particle size distribution, and neutral soil solution. The acid-base buffer capacity is characterized by average values, the buffer capacity in the acid interval increases with depth, while decreases in the alkaline interval. We revealed a significant correlation between the ability to counteract the acid load and the content of physical clay. We believe that the agricultural use of southern chernozems leads to a decrease in soil resistance to acidification.
Key words: chernozems; soil organic matter; acid-base soil buffering
Altermann, M., Rinklebe, J., Merbach, I., Körschens, M., Langer, U., Hofmann, B. (2005). Chernozem - Soil of the Year 2005. J. Plant Nutr. Soil Sci, 168, 725–740. DOI: 10.1002/jpln.200521814.
Gamkalo, M. Z. (2002). Kislotno-osnovna bufern??st grunt??v Chornog??rskogo masivu Ukra??nskih Karpat. [Acid-base buffering of soils of the Chornohir massif of the Ukrainian Carpathians]. Thesis of Doctoral Dissertation. Lv??v (in Ukrainian).
Horá?ek, J., Novák, P., Liebhard, P., Strosser, E., Babulicová, M. (2017). The long-term changes in soil organic matter contents and quality in Chernozems. Plant Soil Environ, 63(1), 8–13, DOI: 10.17221/274/2016-PSE.
James, B. R., Riha, S. J. (1986). pH buffering in forest soils organic horizons: relevanse to ocid precipitation. J. Environ Qual, 5, 3–8.
Kononova, M. M., (1963). Organicheskoe veshchestvo pochvy. [Organic soil substance]. Moscow. Academy of Science of USSR (in Russian).
Kononova, M. M., Belchikova, N. P. (1961). Uskorennye metody opredeleniya sostava gumusa mineralnykh pochv. [Accelerated methods for determining the composition of humus of mineral soils]. Pochvovedenie, 10, 75–87, (in Russian).
Luo, W., Nelson, P., Li, M., Cai, J., Zhang, Y., … Jiang, Y. (2015). Contrasting pH buffering patterns in neutral-alkaline soils along a 3600 km transect in northern China. Biogeosciences, 12, 7047–7056. DOI: doi:10.5194/bg-12-7047-2015.
Marinich, O. M., Parhomenko, G. O., Petrenko, O. M., Shishhenko, P. G. (2003). Udoskonalena shema f??ziko-geograf??chnogo rajonuvannja Ukra??ni. [Improved scheme of physical geographic zoning of Ukraine]. Ukra??nskij geograf??chnij zhurnal, 1, 16–20, (in Ukrainian).
Medvedev, V. V., Laktionova, T. N. (2011). Granulometricheskiy sostav pochv Ukrainy (geneticheskiy, ekologicheskiy i agronomicheskiy aspekty). [Granulometric composition of soils of Ukraine (genetic, ecological and agronomic aspects)]. Apostrof, Hark??v, (in Russian).
Moroz, G. B., Mihajljuk, V. ??., (2011). Grunty seredno-suhostepovogo pedoekotonu P??vn??chno-Zah??dnogo Prichornomorja: monograf??ja. [Soils of the mid-steppe pedoecoton of the Northwest Black Sea]. Lviv. ZUKC (in Ukrainian).
Motuzova, G. V. (1994). Priroda bufernosti pochv k vneshnim khimicheskim vozdeystviyam. [The nature of buffer soil to external chemical influences]. Pochvovedenie, 4, 46–52, (in Russian).
Motuzova, G. V., Bezuglova, O. S. (2007). Ekologicheskiy monitoring pochv: uchebnik. [Ecological monitoring of soils]. Moscow, Akademicheskiy Proekt Gaudeamus (in Russian).
Nabokikh, A. I. (1915). Materialy po issledovaniyu pochv i gruntov Khersonskoy gubernii. [Materials on the study of soils and soils of the Kherson province]. Odessa (in Russian).
Nadtochij, P. P., Misliva, T. M., Vol'vach, F. V. (2010). Ekolog??ja gruntu: monograf??ja. [Soil Ecology]. Zhitomir. PP Ruta (in Ukrainian).
Nadtochiy, P. P. (1993). Opredelenie kislotno-osnovnoy bufernosti pochv. [Determination of acid-base buffer soil]. Pochvovedenie. 4, 34–39 (in Russian).
Nadtochiy, P. P. (1998). Kislotno-osnovnaya bufernost pochvy – kriteriy otsenki ee kachestvennogo sostoyaniya. [Acid-basic buffer soil – a criterion for assessing its qualitative state]. Pochvovedenie, 9, 1094–1102 (in Russian).
Nelson, P. N., Su, N. (2010). Soil pH buffering capacity: a descriptive function and its application to some acidic tropical soils. Australian Journal of Soil Research, 48, 201–207. DOI: doi.org/10.1071/SR09150.
Nosko, B. S. (2006). Antropogenna evolyuts??ya chornozem??v. [Anthropogenic evolution of chernozems]. Harkiv. 13 tipograf??ya, (in Ukrainian).
Sokolova, T. A., Motuzova, G. V., Malinina, M. S., 1991. Khimicheskie osnovy bufernosti pochv. [Chemical bases of buffer soil]. Moscow. Moscow State University (in Russian).
Truskavec'kij, R.S. (2003). Buferna zdatn??st grunt??v ta ih osnovn?? funkciy. [Soil buffer ability and their main functions]. Harkiv. Nove slovo (in Ukrainian).
Ulrich, B. G. (1983). Soil acidity and it’s relation to acid deposition. Effect of accumulation of air pollutant in forest ecosystems. 4, 127–146.
Vadyunina, A. F., Korchagina, Z. A. (1986). Metody issledovaniya fizicheskikh svoystv pochv. [Methods of studying the physical properties of soils]. Moscow. Agropromizdat (in Russian).
Zaytseva, T. F. (1987). Bufernost pochvy i voprosy ee diagnostiki. [Soil buffer and questions of its diagnostics]. Siberian Branch Russian Academy of Science. Series Biology, 14, 69–80 (in Russian).
Zhang, Sh,. Wang, R., Cai, J., Zhang, Y., Li, H., Huang, Sh., Jiang Y. (2016). Impacts of fertilization practices on pH and the pH buffering capacity of calcareous soil. Soil Science and Plant Nutrition, 62(5-6), 432–439. DOI: doi.org/10.1080/00380768.2016.1226685