PDF Download

[1]MA Qianhong,ZHANG Guanghui,GENG Ren,et al.Soil Heavy Metal Spatial Distribution and Pollution Assessment of Sloping Farmland in the Water Erosion Zone of China[J].Research of Soil and Water Conservation,2017,24(02):112-118.

Copy

Soil Heavy Metal Spatial Distribution and Pollution Assessment of Sloping Farmland in the Water Erosion Zone of China

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 24 Number of periods: 2017 02 Page number: 112-118 Column: Public date: 2017-04-28

Title:: Soil Heavy Metal Spatial Distribution and Pollution Assessment of Sloping Farmland in the Water Erosion Zone of China

Author(s):: MA Qianhong^1,2, ZHANG Guanghui^1,2, GENG Ren^1,2, WANG Bing³; 1. State Key Laboratory of Earth Surface Process and Resource Ecology, Beijing Normal University, Beijing 100875, China;
2. Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China;
3. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A & F University, Yangling, Shaanxi 712100, China

Keywords:: heavy metal pollution; single factor pollution index; Nemerow pollution index; sloping farmland; the water erosion zone of China

CLC:: X825

DOI:: -

Abstract:: Soil heavy metal pollution has become an important factor which threatens the national food security. To investigate the spatial distribution of soil heavy metals (As, Cd, Cr, Cu, Ni, Pb, Zn) and pollution situations of sloping farmland in the water erosion zone of China, 36 sampling points were selected according to soil types and soil textures. The single factor pollution index and the Nemerow pollution index were calculated, and the pollution degree was classified according to the second grade values from the Standard of Soil Environment Quality (GB15618—2008). The results showed that:(1) the pollution probability of Cd was 13.9%, which significantly exceeded the pollution levels of other heavy metals, so Cd was the most important soil heavy metal pollution factor in this region; in addition, As, Cr and Cu had a high pollution probability, and the rate was 5.6%; (2) compared with the north area of the Yangtze River, soil heavy metal pollution of the sloping farmland in the south area was significantly serious; the soil heavy metal pollution of southern mountain and hill region was the most serious among the six secondary erosion regions,followed by the Sichuan Basin and surrounding hill region, the Yunnan—Guizhou Plateau region, the northeast low mountain and rolling hill region, the Loess Plateau region, and the northern mountain and hill region; (3) compared with other sampling points, Ningyuan of Hu’nan Province and Zhanjiang of Guangdong Province had the highest Nermerow indices(2.73 and 2.51),which belonged to the moderate pollution level; (4) the proportions of pollution degrees ranked as safety, warning line, light pollution, moderate pollution were 77.8%, 8.3%, 8.3% and 5.6% of the total area of sloping farmland, respectively. The proportions showed that most sloping farmland (about 86.1%) in the water erosion zone of China was relatively safe, but about 13.9% of sloping farmlands might suffer from heavy metal pollution. These results had great significance for identifying soil heavy metal pollution situation of sloping farmland, protecting agroecological environment and ensuring the food security in the water erosion zone of China.

References:: [1] 范拴喜.土壤重金属污染与控制[M].北京:中国环境科学出版社,2011.
[2] 丁真真.中国农田土壤重金属污染与其植物修复研究[J].水土保持研究,2007,14(3):19-20.
[3] Giannis A, Pentari D, Wang J Y, et al. Application of sequential extraction analysis to electrokinetic remediation of cadmium, nickel and zinc from contaminated soils[J]. Journal of Hazardous Materials, 2010,184(1/3):547-554.
[4] 李丽君,张强,白光洁,等.改良剂与油菜对土壤重金属有效态的影响[J].水土保持学报,2014,28(1):246-252.
[5] 唐克丽.中国水土保持[M].北京:科学出版社,2004.
[6] 张美钦.南方重金属矿区的重金属污染现状及治理[J].亚热带农业研究,2006,2(3):212-215.
[7] 环境保护部,囯土资源部.全囯土壤污染状况调查公报[R].2014.
[8] 张利华,龙昱,李辉,等.基于¹³⁷Cs示踪的丹江口市农用地土壤侵蚀与有机质流失分析[J].水土保持学报,2008,22(2):54-57.
[9] 张玉斌,曹宁,佘雕,等.黄土高原残塬沟壑区梯田土壤重金属分布特征[J].中国农学通报,2009,25(12):252-256.
[10] 孙丽娜,孙铁珩,金成洙.卧龙泉河流域土壤重金属污染的模糊评价[J].水土保持研究,2006,13(1):126-129.
[11] 周国华,秦绪文,董岩翔.土壤环境质量标准的制定原则与方法[J].地质通报,2005,24(8):721-727.
[12] 曾希柏,李庭芳,梅旭荣.中国蔬菜土壤重金属含量及来源分析[J].中国农业科学,2007,40(11):2507-2517.
[13] 宋伟,陈百明,刘琳.中国耕地土壤重金属污染概况[J].水土保持研究,2013,20(2):293-298.
[14] 肖文丹.典型土壤中铬迁移转化规律和污染诊断指标[D].杭州:浙江大学,2014.
[15] 刘铮.中国土壤中锌含量的分布规律[J].中国农业科学,1994,27(1):30-37.
[16] 杨国义,张天彬,万洪富,等.广东省典型区域农业土壤中重金属污染空间差异及原因分析[J].土壤,2007,39(3):387-392.

Similar References:

Memo

Last Update: 1900-01-01