GEOCHEMICAL CHARACTERISTICS OF SELENIUM IN THE SOIL-CROP SYSTEM OF KESHAN COUNTY, HEILONGJIANG PROVINCE
ZHANG Zhe-huan1,2, ZHAO Jun1,2, SONG Yun-hong1,2, HE Peng-fei1,2, WEI Ming-hui1,2
1. Shenyang Center of China Geological Survey, Shenyang 110034, China; 2. Key Laboratory of Black Land Evolution and Ecological Effects, CGS, Shenyang 110034, China
Abstract:Keshan County in Heilongjiang Province is the place after which the endemic Keshan disease was named. By analyzing 809 topsoil samples(0-20 cm) and 205 deep-soil samples(150-200 cm), the paper studies the characteristics of selenium(Se) content in soil and crop seeds and available Se content by different soil types. The results show that the average Se content in surface soil is 0.249×10-6, lower than the national average and higher than that of the world and Heilongjiang Province in Northeast China Plain, mainly characterized by Se-sufficiency, with the area accounting for 93.95%. The average Se content in deep soil is 0.167×10-6, obviously lower than that in surface soil, with the Se-low and Se-deficient soil areas making up 62.62%. The Se content in surface layer of different soil types from high to low is chernozem and meadow soil(the same), followed by black soil and dark brown soil. On the contrary, the Se content in deep layer is dark brown soil, black soil, meadow soil and chernozem in order. The Se content of different land use types show that the Se content in construction land and cultivated land is high, that in forest land and water conservancy land low, indicating the Se content is obviously affected by human activities. The Se content in seeds of main crops such as maize, soybean and rice is 0.033×10-6 averagely, showing the characteristics of low-Se.
张哲寰, 赵君, 宋运红, 贺鹏飞, 魏明辉. 黑龙江省克山县土壤-作物系统硒元素地球化学特征[J]. 地质与资源, 2020, 29(6): 585-591,555.
ZHANG Zhe-huan, ZHAO Jun, SONG Yun-hong, HE Peng-fei, WEI Ming-hui. GEOCHEMICAL CHARACTERISTICS OF SELENIUM IN THE SOIL-CROP SYSTEM OF KESHAN COUNTY, HEILONGJIANG PROVINCE. GEOLOGY AND RESOURCES, 2020, 29(6): 585-591,555.
Zhang X L, Ren S F, Li W C, et al. Study on correlation between humic acid and selenium in Kaschin-Beck disease areas[J]. Journal of Environmental Sciences, 1991,3(4):102-107.
[11]
Rotruck J T, Pope A L, Ganther H E, et al. Selenium:Biochemical roleas a component of glutathione peroxidase[J]. Science, 1973,179(4073):588-590.
[12]
Schwarz K, Foltz C M. Selenium as an integral part of factor 3 against dietary necrotic liver degeneration[J]. Journal of the American ChemicalSociety, 1957,79(12):3292-3293.
Shand C A, Eriksson J, Dahlin A S, et al. Selenium concentrations in national inventory soils from Scotland and Sweden and their relationship with geochemical factors[J]. Journal of Geochemical Exploration, 2012,121:4-14.
[17]
Wang M C, Chen H M. Forms and distribution of selenium at different depths and among particle size fractions of three Taiwan soils[J]. Chemosphere, 2003,52(3):585-593.
Zhang B J, Yang L S, Wang W Y, et al. Environmental selenium in the Kaschin-Beck disease area, Tibetan Plateau, China[J]. Environmental Geochemistry and Health, 2011,33(5):495-501.
[25]
熊毅,李庆逵. 中国土壤[M]. 2版. 北京:科学出版社,1987:517-536.
[26]
Yu T, Yang Z F, Lv Y Y, et al. The origin and geochemicalcycle of soil selenium in a Se-rich area of China[J]. Journal of Geochemical Exploration, 2014,139:97-108.