WANG Zhantai, CAO Minxia, CAI Wenchang, et al. Effects of Land Use on Humus and Soil Enzymes of Yellow Soil Under Soil Erosion[J]. Bulletin of Soiland Water Conservation, 2017, 37(5): 27-33.
DOI:
WANG Zhantai, CAO Minxia, CAI Wenchang, et al. Effects of Land Use on Humus and Soil Enzymes of Yellow Soil Under Soil Erosion[J]. Bulletin of Soiland Water Conservation, 2017, 37(5): 27-33. DOI: 10.13961/j.cnki.stbctb.2017.05.005.
Effects of Land Use on Humus and Soil Enzymes of Yellow Soil Under Soil Erosion
[Objective] The effects of land use on humus (humic acid
fulvic acid and humin) and four kinds of important soil enzymes in different yellow soil horizon under soil erosion condition were studied in order to provide some scientific basis for maintaining soil fertility.[Methods] Soil samples were collected in different soil horizon (0-10 cm
10-20 cm and 20-30 cm) at each sample point by zigzag method. Then
soil samples of each layer were mixed evenly in situ and removing of redundant sample was performed by quartering in three times and the corresponding indicators were determined.[Results] (1) Scrub woodland and garden plot had better effect in maintaining soil fertility. However
cultivated land was extremely susceptible to erosion. Soil fertility was directly related with the content of humin of yellow soil. (2) Soil erosion may also affect humic acid content through the loss of water and nitrogen. Fulvic acid of soil in forest land
garden plot and cultivated land lost more easily. However
the grassland had only impact on maintain soil surface fertility. (3) Tillage had significantly adverse effect for activity of urease
alkaline phosphatase and catalase. Meanwhile
soil erosion also evidently affects soil enzymes through the change of soil pH value. (4) Correlation analysis showed that the content of humus component had close contact with the activities of the four kinds of soil enzymes and influenced each other.[Conclusion] The land use types of yellow soil have significantly different effects on humus and soil enzyme activity under erosion.
Wang Zhijie, Jiao Juying, Rayburg S, et al. Soil erosion resistance of "Grain for Green" vegetation types under extreme rainfall conditions on the Loess Plateau, China[J]. Catena, 2016,141:109-116.
Yang Jisong, Yu Junbao, Liu Jingshuang, et al. Humus distribution and fraction of typical marsh soil depth profiles in the Sanjiang Plain[J]. Chinese Journal of Soil Science, 2006,37(5):865-868.
Tabatabai M A, García-Manzanedo A M, Acosta-Martinez V. Substrate specificity of arylamidase in soils[J]. Soil Biology and Biochemistry, 2002,34(1):103-110.