人类活动对江汉平原地区土地质量的影响——以洪湖市为例

郑雄伟, 陶梦珺, 张芷宜, 查亚, 王亚风, 张响荣

Impacts of human activities on the land quality of Jianghan Plain: A case study of Honghu City

ZHENG Xiong-Wei, TAO Meng-Jun, ZHANG Zhi-Yi, CHA Ya, WANG Ya-Feng, ZHANG Xiang-Rong

表9 不同输入途径重金属元素年输入通量

Table 9 Annual fluxes of heavy metals from different sourcesg·(hm2·a)-1

元素 As Cd Cr Cu Hg Pb Zn 化肥 5.73 0.15 16.38 1.75 0.02 2.48 45.18 灌溉水 28.57 0.20 16.01 6.40 0.35 3.36 20.44 干湿沉降 1.004 0.133 3.708 3.006 0.015 5.205 24.517 合计 35.304 0.483 36.098 11.156 0.385 11.045 90.137 年增加量/10-6 0.0097 0.0001 0.0099 0.0031 0.0001 0.0030 0.0248 土壤风险筛选值/10-6 25 0.6 300 200 0.6 140 250 (年增加量/风险筛选值)/% 0.0388 0.0167 0.0033 0.0016 0.0167 0.0021 0.0099