Enzyme Activity Variability and Comparison in Soils under Medicinal versus Crop Plants of Anguo City, China
Abstract
Long-term continuous cultivation of different plant species in a similar agroecosystem intensively may result in divergent variability in soil fertility, particularly soil biochemical properties. In this study, an investigation was conducted to clarify the variability of five soil enzyme activities (urease, protease, catalase, polyphenol oxidase and alkaline phosphatase) of croplands under medicinal plants (herbal fields) and food crops (crop fields) in Anguo city, a traditional cultivation base for Chinese medicinal plants in China. The results showed that five soil enzyme activities were similar between herbal and crop fields. However, soil urease and alkaline phosphatase activities of herbal and crop fields decreased significantly with soil depth (0-60 cm), while protease, catalase, polyphenol oxidase activities were similar in all soil layers for two kinds of fields. There were largely variation scenes at linear correlation analysis between soil physicochemical traits and enzymatic activities under medicinal plant versus crop fileds although extensively significant correlations were presented. In conclusion, soil enzyme activities were similar in two type of farmlands, and soil urease and alkaline phosphatase activities decreased with soil depth for both fields. Inconsistent linear correlations between soil physicochemical traits and enzymatic activities under medicinal plant versus crop fields were presented, so soil enzymatic activity variation was subjected to soil physicochemical traits dominated by agronomic managements designed for specific plant species.
References
Chu, Z. D., Liu, W. J., Xiao, Y. B., Zhu, Y. G., Zheng, W. J., & Duan, Y. H. (2010). Survey and assessment of heavy metals in soils and herbal medicines from chinese herbal medicine cultivated regions. Environmental Science, 31(6),1600-1607.
Dai, J. J., Song, P. H., Yan, M. C., & Xu, T. T. (2013). Effect of different cropping patterns of soybean and maize seedlings on rhizosphere soil enzyme activities and microbial biomass carbon and nitrogen. Journal of Northeast Agricultural University, 44(21), 17-22.
Dick, R. P. (1994). Soil enzyme activities as indicators of soil quality. In Doran, J. W., Coleman, D. C., Bezdicek, D. F., & Stewart, B. A. (Eds.), Defining soil quality for a sustainable environment. Soil Science Society of America, Madison, 107-124. https://doi.org/10.2136/sssaspecpub35.c7
Dick, R. P., Breakwill, D., & Turco, R. (1996). Soil enzyme activities and bio-diversity measurements as integrating biological indicators. In Doran, J. W., & Jones, A. J. (Eds.), Handbook of Methods for Assessment of Soil.
Doran, J. W., & Parkin, T. B. (1994). Defining and assessing soil quality. In Doran, J. W., Coleman, D. C., Bezdicek, D. F., & Stewart, B. A. (Eds.), Defining soil quality for a sustainable environment. Soil Science Society of America, Madison (pp. 3-21). https://doi.org/10.2136/sssaspecpub35.c1
Du, L. F., Zhao, J. J., Farhat, A., & Liu, W. K. (2013). Higher nitrates, P and lower pH in soils under medicinal plants versus crop plants. Environmental Chemistry Letters, 11(4), 385-390. https://doi.org/10.1007/s10311-013-0419-1
Fan, J., & Hao, M. D. (2002). Kinetic characteristics of urease and alkaline phosphatase in dry land farming. Agricultural Research in the Arid Atea, 20(1), 35-37.
Frankenberger, W. T., & Dick, W. A. (1983). Relationships between enzyme activities and microbial growth and activity indices in soil. Soil Science Society of America Journal, 47(5), 945-951. https://doi.org/10.2136/sssaj1983.03615995004700050021x
Guan, S. Y. (1986). Soil enzyme and its methods of research. Beijing: Agricultural Press, 303-337.
Jiao, X. G., Wei, D., & Sui, Y. Y. (2011). Effects of long-term fertilization on the soil enzyme activities and soil nutrients of the black and dark brown soils. Chinese Journal of Soil Science, 42(3), 698-703.
Lalande, R., Gagnon, B., & Simard, R. R. (1998). Microbial biomass C and alkaline phosphatase activity in two compost amended soils. Canadian J. Soil Science, 78, 581-587. https://doi.org/10.4141/S98-004
Lan, Y., Han, X. R., & Yang, J. F. (2011). Temporal and spatial dynamics of enzyme activities under long-term fertilization in a maize growing brown soil. Plant Nutrition and Fertilizer Science, 17(5), 1197-1204.
Li, S. Q., Wang, H., Zhang R. F., & Zhao B. (2011). Analysis on distribution characteristics of soil nutrients in cultivated land of Anguo City. Journal of Anhui Agricultural Science, 39(36), 22401- 22402,22915
Masciandaro, G., Ceccanti, B., Benedicto, S., Lee, H. C., & Cook, H. F. (2004). Enzyme activity and C and N pools in soil following application of mulches. Canadian. J. Soil Science, 84, 19-30. https://doi.org/10.4141/S03-045
Tabatabai, M. A., & Bremner, J. M. (1969). Use of p-nitrophenyl phosphate for assay of soil phosphatase activity. Soil Biology and Biochemistry, 1(4), 301-307. https://doi.org/10.1016/0038-0717(69)90012-1
Taylor, J. P., Wilson, B., & Mills, M. S. (2002). Comparison of microbial numbers and enzymatic activities in surface soils and subsoils using various techniques. Soil Biology & Biochemistry, 34, 387-401. https://doi.org/10.1016/S0038-0717(01)00199-7
Wang, J. H., Yin, R., Zhang, H. Y., Lin, X. G., Chen, R. R., & Qin, S. W. (2007). Changes in soil enzyme activities, microbial biomass,and soil nutrition status in response to fertilization regimes in a long-term field experiment. Ecology and Environment, 16(1), 191-196.
Zeng, L. L., Zhang, X., M., & Hong, Y. (2008). Effect of long- term fertilization and tillage system on soil enzyme activities. China soil and fertilizer, (2), 27-30.
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