The changing the biological properties of a forest soil after converting to the paddy field and determining the most sensitive properties to land use change

Document Type : Complete scientific research article

Authors

1 Soil science university of zanjan

2 Department of soil science, Faculty of Agriculture, University of Zanjan, Zanjan, Iran.

3 Research center of Agriculture and Natural, Resources of Gilan province, (AREEC), Rasht

4 Dept. of soil science. University of zanjan

Abstract

Abstract
Background and objectives: The evaluation of biologic parameters of soil quality plays an important role in assessing the land management and sustainability of agricultural systems. For this purpose, the biological properties of soil quality, which are sensitive to farming are measured and investigated. The aim of the present study is to evaluate the biological changes forest soil quality after converting to the paddy field and determining the most sensitive properties to disturbance of an ecosystem and the creating a minimum set of data from these parameters using the factor analysis method.
Material and methods: The present study was performed in Poplar research station in Gilan Province. The soil sample collection was done in both natural forest and closest paddy field from five different depth (0-20, 20-40, 40-60, 60-80, and 80-100 cm). The data were analyzed as a factorial test in a completely randomized design with three replications. The factors including the type of land use in two levels and soil depth in five levels were studies in three replications. Therefore, the statistic population of the present study was 10 treatments (5 × 2 =10) with three replications (totally 30 test units). In the study, the microbial respiration, the mineralization percentage of carbon, the microbial biomass carbon, microbial fraction, and the metabolic coefficient of the samples were measured and the sensitivity index to each feature was calculated. The data were analyzed using SAS software. Mean comparison of parameters of Duncan’s test and factor analysis using principal component analysis method were performed.
Results: The results of the study showed that any land use changes from forest to paddy field led to increasing the mineralization percentage of carbon and the metabolic coefficient by 28 and 21% respectively. However, microbial biomass C (61%), microbial respiration (31%), and basal respiration (49%) were reduced. Sensitivity index (SI) indicated that microbial biomass is more sensitive than other parameters to land use. The use of principal component analysis (PCA) showed that two factors could explain more than 70% of the variance in microbial biomass and carbon mineralization percentage and more than 60% of the variance in the amount of carbon mineralization, basal respiration, and a metabolic fraction (quotient). These parameters represent the maximum communality estimation, and the microbial fraction showed the minimum relative importance among the estimates of the total communality values.
Conclusion: The change in land use from forests to the paddy fields had an adverse effect on the biological parameters of soil quality, which led to reducing the soil health and carbon sequestration potential in soil. Therefore, cultivation in these lands exacerbates soil degradation and stopping the process results in longer recovery and resilience time.

Keywords

References

1.Anderson, J.P.E. 1982. Soil respiration. In: A.L. Page, R.H. Miller and D.R. Keeney (Eds). Methods of soil analysis. Part 2, Chemical and microbiological properties. American Society of Agronomy and Soil Science Society of America, Madison, Wisconsin, USA, pp. 831-872.
2.Anderson, T.H., and Domsch, K.H. 1986. Carbon assimilation and microbial activity in soil. J. Plant Nutr. Soil Sci. 149: 457-468.
3.Asghari, Sh., Hashemian Soofian, S., Goli Kalanpa, E., and Mohebodini, M. 2015. Impacts of land use change on soil quality indicators in eastern Ardabil province. J. Water Soil Cons. 22: 3. 1-20.
4.Beheshti, A., Raiesi, F., and Golchin, A. 2012. The effects of disturbance caused by the conversion of forest lands to agriculture on some of the biology of soil quality in forest ecosystems in northern Iran. J. Agroecol. 3: 439-453.
5.Dalal, R.C. 1998. Soil microbial biomass, what do the numbers really mean? Austr. J. Exper. Agric. 38: 649-665.
6.Filip, Z. 2002. International approach to assessing soil quality by ecologically related biological parameters. Agriculture, Ecosystems and Environment. 88: 164-174.
7.Girmay, G., Singh, B., Mitiku, H., Borresen, T., and Lal, L. 2008. Carbon stocks in Ethiopian soils in relation to land use and soil management. Land Degradation & Development. 19: 351-367.
8.Griinzweig, J.M., Starrow, S.D., and Chapin, S.S. 2003. Impact of forest conversion to agriculture on carbon and nitrogen mineralization in subarctic Alaska. Biogeochemistry. 64: 271-296.
9.Haghighi, F., Gorji, M., and Shorafa, M. 2010. A study of the effects of land use changes on soil physical properties and organic matter. Land Degradation and Development. 21: 496-502.
10.Islam, K.R., and Weil, R.R. 2000. Soil quality indicator properties in mid- Atlantic soils as influenced by conservation management. Soil Water Cons. J. 54: 64-78.
11.Kandeler, E., and Murer, E. 1993. Aggregate stability and soil microbial processes in a soil with different cultivation. Geoderma. 56: 503-513.
12.Khormali, F., and Shamsi, S. 2009. Micromorphology and quality attributes of the loess derived soils affected by land use change: a case study in Ghapan watershe, northern Iran. J. Moun. Sci.6: 197-204.
13.Lai, R., Lagomarsino, A., Ledda, L., and Roggero, P.P. 2014. Variation in soil C and microbial functions across tree canopy projection and open grassland microenvironments. Turk. J. Agric. Forest. 38: 62-69.
14.Lal, R. 2004. Carbon sequestration in dry land ecosystems. Environmental Management. 33: 528-544.
15.Liang, Q., Chen, H., Gong, Y., Fan, M., Yang, H., Lal, R., and Kuzyakov, Y. 2012. Effects of 15 years of manure and inorganic fertilizers on soil organic carbon fractions in a wheat-maize system in the North China plain. Nutrient Cycling in Agroecosystems. 92: 21-33.
16.Maharjan, M., Sananllah, M., Razavi, B.S., and Kuzyakov, Y. 2017. Effect of land use and management practices on microbial biomass and enzyme activities in subtropical top and up soil. Applied Soil Ecology. 113: 27-28.
17.Mganga, K.Z., Razavi, B.S., and Kuzyakov, Y. 2016. Land use affects soil biochemical properties in Mt. Kilimanjaro region. Catena. 141: 22-29.
18.Moscatelli, M.C., Lagomarsino, A., Marinari, S., De Angelis, P., and Grego, S. 2005. Soil microbial indices as bioindicators of environmental changes in a poplar plantation. Ecological Indicator. 5: 171-179.
19.Raiesi, F. 2006. Carbon and N mineralization as affected by soil cultivation and crop residue in a calcareous wetland ecosystem in Central Iran. Agriculture, Ecosystems and Environment. 112: 13-20.
20.Raiesi, F. 2007. The conversion of overgrazed pasture to almond orchards and alfalfa cropping systems may favor microbial indicators of soil quality in Central Iran. Agriculture, Ecosystems and Environment. 121: 309-318.
21.Raiesi, F., and Asadi, E. 2006. Soil microbial activity and litter turnover in native grazed and ungrazed rangelands in a semiarid ecosystem. Biology and Fertility of Soils. 43: 76-82.
22.Raiesi, F., and Beheshti, A. 2015. Microbiological indicators of soil quality and degradation following conversion of native forests to continuous croplands. Ecological Indicators. 50: 173-185.
23.Sanaullah, M., Blagodatskaya, E., Chabbi, A., Rumpel, C., and Kuzyakov, Y. 2011. Drought effects on microbial biomass and enzyme activities in the rhizosphere of grasses depend on plant community composition. Applied Soil Ecology. 48: 38-44.
24.Sparling, G.P. 1997. Soil microbial biomass, activity and nutrient cycling as indicators of soil health. In: Pankhurst, C.E., Doube, B.M., Gupta, V.V.S.R. (Eds.), Biological Indicators of Soil Health. CAB International. Pp: 97-119.
25.Su, Y.Z., Zhao, H.L., Zhang, T.H., and Zhao, X.Y. 2004. Soil properties following cultivation and non-grazing of a semi-arid sandy grassland in northern China. Soil and Tillage Research.75: 27-36.
26.Vance, E.D., Brookes, P.C., and Jenkinson, D.S. 1987. An extraction method for measuring microbial biomass. Soil Biology and Biochemistry. 19: 703-707.
Journal of Water and Soil Conservation
Volume 26, Issue 4
November and December 2019
Pages 269-282

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