Assessment of soil microbial properties in some regions affected by climate change

Document Type : Research Paper

Authors

1 Institute of Medical Technical / Al-Mansour, Middle Technical University, Baghdad 10022, Iraq

2 Baquba Technical Institute, Middle Technical University, Baquba, Iraq

10.22124/cjes.2022.5800

Abstract

Climate change and human activity may have profound impacts on ecosystems sustainability and soil degradation. Within this context, soil microbial properties represented by microbial biomass and enzymatic activities have been used as soil quality assessing bioindicators. Twenty soil samples were collected from five unmanaged lands with native vegetation cover in areas around Baghdad, Iraq. The microbial biomass carbon (MBC) and microbial biomass nitrogen (MBN) were evaluated by the chloroform fumigation - extraction method. The soil enzymes activity was estimated by fluorescence enzyme assays. The current study showed a significant decrease in the activity of soil microbial communities in this region in response to climate changes that affected physicochemical soil properties. Neither pH nor electrical conductivity was significantly correlated with phosphatase activity. Electrical conductivity was negatively correlated with microbial biomass content and nitrifying enzymes activity. Soil moisture was strongly correlated with microbial biomass and enzymatic activity. Furthermore, microbial biomass carbon and nitrogen were significantly lower at all study sites. Our data indicate that the soil state was stressful, specific, and less efficient in supporting soil microbial activity. Consequently, lands reclamation would contribute to reducing soil degradation. This is the first analysis of bioindicator measurements of soil in a hot and dry ecosystem in the Middle East.

Keywords


AL-Lami, RA & Al-Mayaly, IK 2022, Detecting genetics of several isolated bacterial species from soils by hydrocarbons. Caspian Journal of Environmental Sciences, 20: 813-819.
Amaral, HF, Sena, JOA, Andrade, DS, Jácome, AG & Caldas RG 2012, Carbon and soil microbial respiration in soil from conventional, organic vineyards and comparison with an adjacent forest. Semina: Ciências Agrárias, 33: 437-448. ‏
Andreote, FD & e Silva, MDCP 2017, Microbial communities associated with plants: learning from nature to apply it in agriculture. Current Opinion in Microbiology, 37: 29-34.
Bell, CW, Fricks, BE, Rocca JD, Steinweg, JM, McMahon, SK & Wallenstein, MD 2013, High-throughput fluorometric measurement of potential soil extracellular enzyme activities. Journal of Visualized Experiments, 81: e50961. ‏
Bloem, J & Breure, AM 2003, Microbial indicators. In: trace metals and other contaminants in the environment, 6: 259-282.
Bossio, DA, Fleck, JA, Scow, KM & Fujii, R 2006, Alteration of soil microbial communities and water quality in restored wetlands. Soil Biology and Biochemistry, 38: 1223-1233.
Cabugao, KG, Timm, CM, Carrell, AA, Childs, J, Lu, TYS, Pelletier, DA & Norby, RJ 2017, Root and rhizosphere bacterial phosphatase activity varies with tree species and soil phosphorus availability in Puerto Rico tropical forest. Frontiers in Plant Science, 8: 1834. ‏
COP26 UN climate conference 2021, https://www.iq.undp.org/content/iraq/en/home/stories/2021-stories/10/cop-26-in-glasgow--iraqs-preparations-underway.html
Cordero, I, Snell, H & Bardgett RD 2019, High throughput method for measuring urease activity in soil. Soil Biology and Biochemistry, 134: 72-77. ‏
Cruz LG, Bastidas ATC, Suárez LR, Salazar J CS (2019). Microbial properties of soil in different coverages in the Colombian Amazon. Floresta e Ambiente, 26. ‏
Huera Lucero, T, Labrador Moreno, J, Blanco Salas, J & Ruiz Téllez, T 2020, A Framework to Incorporate Biological Soil Quality Indicators into Assessing the Sustainability of Territories in the Ecuadorian Amazon. Sustainability, 12: 3007. ‏
Jacoby, R, Peukert, M, Succurro, A, Koprivova, A & Kopriva, S 2017, The role of soil microorganisms in plant mineral nutrition-current knowledge and future directions. Frontiers in plant science, 8: 1617.‏
Juan, LI, Zhao, BQ, Li, XY, Jiang, RB & Bing, SH 2008, Effects of long-term combined application of organic and mineral fertilizers on microbial biomass, soil enzyme activities and soil fertility. Agricultural Sciences in China, 7: 336-343. ‏
Li, L, Xu, M, Eyakub Ali, M, Zhang, W, Duan, Y & Li, D 2018, Factors affecting soil microbial biomass and functional diversity with the application of organic amendments in three contrasting cropland soils during a field experiment. PLoS One, 13: e0203812. ‏
Margalef, O, Sardans, J, Fernández Martínez, M, Molowny Horas, R, Janssens, IA, Ciais, P & Peñuelas, J 2017, Global patterns of phosphatase activity in natural soils. Scientific reports, 7: 1-13. ‏
Mehrabian, A, Naqinezhad, A, Mahiny, AS, Mostafavi, H, Liaghati, H & Kouchekzadeh, M 2009, Vegetation Mapping of the Mond Protected Area of Bushehr Province (South‐west Iran). Journal of Integrative Plant Biology, 51: 251-260. ‏ 
Nannipieri, P, Giagnoni, L, Renella, G, Puglisi, E, Ceccanti, B, Masciandaro, G & Marinari SAR, A 2012, Soil enzymology: classical and molecular approaches. Biology and Fertility of Soils, 48: 743-762.
Nkongolo, KK & Narendrula Kotha, R 2020, Advances in monitoring soil microbial community dynamic and function. Journal of Applied Genetics, 61: 249-263. ‏
Pajares, S & Bohannan, BJ 2016, Ecology of nitrogen fixing, nitrifying, and denitrifying microorganisms in tropical forest soils. Frontiers in Microbiology, 7: 1045. ‏
Pereira e Silva, MC, Poly, F, Guillaumaud, N, Van Elsas, JD & Falcão Salles, J 2012, Fluctuations in ammonia oxidizing communities across agricultural soils are driven by soil structure and pH. Frontiers in Microbiology, 3: 77. ‏
Pii, Y, Mimmo, T, Tomasi, N, Terzano, R, Cesco, S & Crecchio, C 2015, Microbial interactions in the rhizosphere: beneficial influences of plant growth-promoting rhizobacteria on nutrient acquisition process. A review. Biology and Fertility of Soils, 51: 403-415. ‏
Ramesh, T, Bolan, NS, Kirkham, MB, Wijesekara, H, Kanchikerimath, M, Rao, CS & Freeman II OW 2019, Soil organic carbon dynamics: Impact of land use changes and management practices: A review. Advances in Agronomy, 156: 1-107. ‏
Rietz, DN & Haynes, RJ 2003, Effects of irrigation-induced salinity and sodicity on soil microbial activity. Soil Biology and Biochemistry, 35: 845-854. ‏
Salman, SA, Shahid, S, Ismail, T, Chung, ES & Al Abadi, AM 2017, Long-term trends in daily temperature extremes in Iraq. Atmospheric Research, 198: 97-107. ‏ 
Schloter, M, Nannipieri, P, Sørensen, SJ & Nan Elsas, JD 2018, Microbial indicators for soil quality. Biology and Fertility of Soils, 54: 1-10. ‏
Scotti, R, Bonanomi, G, Scelza, R, Zoina, A & Rao, MA 2015, Organic amendments as sustainable tool to recovery fertility in intensive agricultural systems. Journal of Soil Science and Plant Nutrition, 15: 333-352. ‏
Shi, ZJ, Lu, Y, Xu, ZG & Fu, SL 2008, Enzyme activities of urban soils under different land use in the Shenzhen city, China. Plant Soil Environ, 54: 341-346. ‏
Tian, D, Jiang, L, Ma, S, Fang, W, Schmid, B, Xu, L & Fang, J 2017, Effects of nitrogen deposition on soil microbial communities in temperate and subtropical forests in China. Science of the Total Environment, 607: 1367-1375. ‏
Touhami, D, McDowell, RW & Condron, LM 2020, Role of organic anions and phosphatase enzymes in phosphorus acquisition in the rhizospheres of legumes and grasses grown in a low phosphorus pasture soil. Plants, 9: 1185. ‏
Utobo, EB & Tewari, L 2015, Soil enzymes as bioindicators of soil ecosystem status. Applied Ecology and Environmental Research, 13: 147-169. ‏
Van Kessel, MA, Speth, DR, Albertsen, M, Nielsen, PH, Den Camp, HJO, Kartal, B & Lücker, S 2015, Complete nitrification by a single microorganism. Nature, 528: 555-559. ‏
Vance, ED, Brookes, PC & Jenkinson, DS 1987, An extraction method for measuring soil microbial biomass C. Soil Biology and Biochemistry, 19: 703-707,‏ https://doi.org/10.1016/0038-0717(87)90052-6.
Vega Ávila, A, Medina, E, Paroldi, H, Toro, M, Baigori, M & Vázquez, F 2018, Bioindicators of soil quality of open shrubland and vineyards. Journal of Soil Science and Plant Nutrition, 18: 1065-1079.
Wienhold, BJ, Andrews, SS & Karlen, DL 2004, Soil quality: a review of the science and experiences in the USA. Environmental Geochemistry and Health, 26: 89-95. ‏
Xue, D, Yao, H & Huang, C 2006, Microbial biomass, N mineralization and nitrification, enzyme activities, and microbial community diversity in tea orchard soils. Plant and Soil, 288: 319-331. ‏
Yao, H, Gao, Y, Nicol, GW, Campbell, CD, Prosser, JI, Zhang, L & Singh, BK 2011, Links between ammonia oxidizer community structure, abundance, and nitrification potential in acidic soils. Applied and Environmental Microbiology, 77: 4618-4625. ‏
Zinchenko, MK, Zinchenko, SI, Mazirov, MA, Ragimov, AO & Shitikova, AV 2021, Biological indicators in the environmental monitoring of grey forest soil of agrosystems. Caspian Journal of Environmental Sciences, 19: 891-896.