农业环境科学学报2013，Vol.32Issue(2)：259-266,8.DOI:10.11654/jaes.2013.02.008
B[a]P累积污染对土壤呼吸强度的影响
Influences of Benzo(a)pyrene Superimposed Pollution on Soil Respiration Intensity
摘要
Abstract
As one of the persistent organic pollutants with strong carcinogenic, teratogenic and mutagenic effect, benzo(a) pyrene(B[a]P) is gradually accumulating in soil and posing a serious threaten to soil environment quality. The B[a]P bioavailability and its impacts on soil respiration were investigated under simulated condition by using the superimposed method. Results indicated that contents of extractable and available B[a]P sharply declined in the first 28 d(0~28 d), and then slowly decreased between 28 d and 56 d incubation time under both superimposed and one-time pollution method. Soil extractable and available B[a]P in superimposed pollution tests were 34.50%~57.29% and 19.00%~43.80% lower than that in the one-time pollution method, respectively. Soil respiration intensity decreased by 14.38% to 35.80% in the first 7 d incubation period, and then gradually recovered and kept stable between 11.51 mg'kg"'*h"1 and 15.69 mg'kg"'*h"' at the end of the incubation time. In both superimposed and one-time pollution tests, the positive correlation relationship between soil available B[a]P and soil respiration intensity was testified in the whole incubation period. Results from this work provide a crucial data for evaluating ecological toxicity of soil B[a]P accumulative pollution.关键词
苯并[a]芘(B[a]P)/累积污染/一次污染/有效性/土壤呼吸强度Key words
benzo( a )pyrene(B[a]P)/ superimposed pollution/ one-time pollution/ bioavailability/ soil respiration intensity分类
资源环境引用本文复制引用
郑彬,马静静,葛高飞,郜红建..B[a]P累积污染对土壤呼吸强度的影响[J].农业环境科学学报,2013,32(2):259-266,8.基金项目
国家自然科学基金(41071158) （41071158）
