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GEOCHEMICAL EVALUATION OF LAND QUALITY IN GAOQIAO TOWN, CENTRAL YUNNAN |
XU Jie, XIANG Jing-wei, WANG Hao-yu |
Kunming Center of Natural Resources Comprehensive Survey, CGS, Kunming 650000, China |
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Abstract A total of 453 topsoil samples are collected at a density of 1.12 cores per square kilometer in Gaoqiao Town of Wuding County. The heavy metal elements such as As, Cr, Cd, Cu, Hg, Pb, Ni and Zn are evaluated for soil environment geochemistry. The soil quality is assessed as first and second grades, with the first-grade area of 350 km2, accounting for 84.95%, and the second-grade area of 62 km2, making up 15.05%. Cu and Cd in some parts of the area show abnormal but do not reach pollution levels. The contents of nutrient elements such as N, P and K are evaluated for soil nutrient geochemical grading, with about 378 km2 above medium level, occupying 91.74%. The nutrient-deficient parts are close to densely-populated area, therefore it is inferred that the evaluation unit is seriously affected by human activities. From the above, the land quality geochemical evaluation for Gaoqiao Town shows a relative balance, with high-quality area about 101 km2, accounting for 24.51%, good area 224 km2 (54.37%), medium area 80 km2 (19.42%), and no inferior area.
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Received: 27 February 2021
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[1] |
Ye C, Xiao W D. Geochemical evaluation of land quality in Huanglin-Qilushan area of Yudu County[J]. Jiangxi Coal Science& Technology, 2020(1):47-50.叶翠,肖卫东.于都黄麟-祁禄山地区土地质量地球化学评价[J].江西煤炭科技, 2020(1):47-50.
|
[2] |
Zhang X L, Yu C H, Wang A P. Genesis and ore control factors of Wuding ilmenite placer in Yunnan[J]. Acta Geologica Sichuan, 2018, 38(3):424-426, 435.张旭林,余长恒,王安平.云南武定钛铁砂矿成因及控矿因素分析[J].四川地质学报, 2018, 38(3):424-426, 435.
|
[3] |
China Geological Survey. Supplementary provisions on technical requirements for sample analysis in geochemical reconnaissance specification (1:50000)[S]. Beijing:Geological Publishing House, 2007.(in Chinese)中国地质调查局.地球化学普查(比例尺:1:50000)规范样品分析技术要求补充规定[S].北京:中国地质出版社, 2007.
|
[4] |
Ministry of Land and Resources of the People's Republic of China. DZ/T 0295-2016 Determination of land quality geochemical evaluation[S]. Beijing:China Standards Press, 2016.中华人民共和国国土资源部. DZ/T 0295-2016土地质量地球化学评价规范[S].北京:中国标准出版社, 2016.
|
[5] |
Ministry of Land and Resources of the People's Republic of China. DZ/T 0011-2015 Specification of geochemical reconnaissance survey (1:50000)[S]. Beijing:Geological Publishing House, 2015.中华人民共和国国土资源部. DZ/T 0011-2015地球化学普查规范(1:50000)[S].北京:地质出版社, 2015.
|
[6] |
Wang S, Zhu X, Li X R, et al. Geochemical characteristics of nitrogen, phosphorus and potassium and soil fertility evaluation in Leizhou Peninsula, Guangdong Province[J]. Geology in China, 2021, 48(4):1177-1187.汪实,朱鑫,黎旭荣,等.广东雷州半岛土壤氮、磷、钾元素地球化学特征及其土壤肥力评价[J].中国地质, 2021, 48(4):1177-1187.
|
[7] |
Wang N, Yue M X, Ma J S. A Complete set of analytical scheme and quality control system of Chemical analysis for 1:50000 geochemical survey[J]. Geology and Resources, 2015, 24(1):63-69.王娜,岳明新,马建生. 1:5万地球化学普查中样品分析配套方案和质量监控体系[J].地质与资源, 2015, 24(1):63-69.
|
[8] |
Dai H M, Zhao J, Liu G D, et al. Progress in the quality survey of black soil in Northeast China[J]. Geology and Resources, 2020, 29(3):299.戴慧敏,赵君,刘国栋,等.东北黑土地质量调查成果[J].地质与资源, 2020, 29(3):299.
|
[9] |
Hou L, Ding J, Wang C M, et al. Ore-forming fluid and metallogenesis of the Yinachang Fe-Cu-Au-REE deposit, Wuding, Yunan Province, China[J]. Acta Petrologica Sinica, 2013, 29(4):1187-1202.侯林,丁俊,王长明,等.云南武定迤纳厂铁-铜-金-稀土矿床成矿流体与成矿作用[J].岩石学报, 2013, 29(4):1187-1202.
|
[10] |
Yang B, Hou L, Guo Y, et al. Characteristics of hydrothermal activity of the Hetaoqing iron-copper deposit in Wuding area and its similarity and difference with the Yinachang iron-copper deposit in Yunnan Province[J]. Mineralogy and Petrology, 2019, 39(4):6-17.杨斌,侯林,郭阳,等.云南武定地区核桃箐铁铜矿热液活动特征及其与迤纳厂铁铜矿的异同[J].矿物岩石, 2019, 39(4):6-17.
|
[11] |
Qin X Y, Peng M Z, Jiao T L, et al. Assessment of GIS-based geological environment carrying capacity in circum-Chaohu Lake area, Anhui, China[J]. Geology and Resources, 2020, 29(2):180-186.秦先燕,彭苗枝,焦团理,等.基于GIS的环巢湖地区地质环境承载能力评价[J].地质与资源, 2020, 29(2):180-186.
|
[12] |
Qin Y L, Zhang F G, Peng M, et al. Geochemical distribution characteristics and sources of heavy metals in soils of Wuding County, Yunnan Province[J]. Geology and Exploration, 2020, 56(3):540-550.秦元礼,张富贵,彭敏,等.云南省武定县土壤重金属地球化学分布特征及其来源浅析[J].地质与勘探, 2020, 56(3):540-550.
|
[13] |
China National Environmental Monitoring Centre. Chinese soil element background value[M]. Beijing:China Environmental Science Press, 1990:32-34.中国环境监测总站.中国土壤元素背景值[M].北京:中国环境科学出版社, 1990:32-34.
|
[14] |
Gong Z T, Huang B, Ouyang T. Pedogeochemistry of china and its significance in agriculture[J]. Scientia Geographica Sinica, 1998, 18(1):6-14.龚子同,黄标,欧阳洮.我国土壤地球化学及其在农业生产中的意义[J].地理科学, 1998, 18(1):6-14.
|
[15] |
Paatero P, Tapper U. Positive matrix factorization:A non-negative factor model with optimal utilization of error estimates of data values[J]. Environmetrics, 1994, 5(2):111-126.
|
[16] |
Cheng X M. Geochemical behavior and risk analysis for heavy elements in soil profiles with different parent material, Yunnan Province, China[D]. Beijing:China University of Geosiciences (Beijing), 2016.成晓梦.云南不同成土母质土壤剖面中重金属元素地球化学行为与风险分析[D].北京:中国地质大学(北京), 2016.
|
[17] |
Yu B, Wu K N. Eco-risk regionalization and control of heavy metal in soil with high background value[J]. Acta Agriculturae Universitatis Jiangxiensis, 2018, 40(3):629-634.于兵,吴克宁.高背景值土壤重金属生态风险区划及防控[J].江西农业大学学报, 2018, 40(3):629-634.
|
[18] |
Zhao Q G. Improving knowledge of soil, innovating modern pedology[J]. Acta Pedologica Sinica, 2008, 45(5):771-777.赵其国.提升对土壤认识,创新现代土壤学[J].土壤学报, 2008, 45(5):771-777.
|
[19] |
Liu X T, Zhou G Q, Ma R F, et al. Case study:County-level function-based regionalization method[J]. Journal of Ningbo University (NSEE), 2015, 28(1):80-85.刘修通,周国强,马仁锋,等.武定县地域功能区划分方法研究[J].宁波大学学报(理工版), 2015, 28(1):80-85.
|
[20] |
Zhao S C, Wang Y W, Rang H, et al. Metallogenic conditions of ilmenite placer in Wuding area, central Yunnan[J]. Yunnan Geology, 2020, 39(2):260-266.赵思传,王亚伟,让昊,等.滇中武定地区钛铁砂矿成矿地质条件[J].云南地质, 2020, 39(2):260-266.
|
|
|
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