模拟酸雨与镉或锌的组合对土壤微生物活性的影响。

Effects of combinations of simulated acid rain and cadmium or zinc on microbial activity in soil.

作者信息

Bewley R J, Stotzky G

出版信息

Environ Res. 1983 Aug;31(2):332-9. doi: 10.1016/0013-9351(83)90011-7.

Abstract

There was little effect on the rate of CO2 evolution from glucose-supplemented soil, adjusted to pH 3.2 with a 2:1 combination of H2SO4 and fuming HNO3, and concomitant additions of 100 or 1000 ppm Cd or of 1000 or 10,000 ppm Zn (as sulfates) were no more inhibitory than in soil untreated with acid. In soil adjusted to pH 2.8, the lag in CO2 evolution was increased by 1 day, and was extended further by the concomitant addition of 10,000 but not 1000 ppm Zn or of 1000 but not 100 ppm Cd. The growth of Aspergillus niger in soil acidified to pH levels of 3.6 to 4.2 was further reduced by the addition of either 100 or 250 ppm Cd or of 1000 ppm Zn.

摘要

用硫酸和发烟硝酸按2:1的比例将添加葡萄糖的土壤pH值调至3.2，在此条件下，二氧化碳释放速率几乎没有受到影响。同时添加100或1000 ppm镉或1000或10,000 ppm锌（以硫酸盐形式），其抑制作用并不比未用酸处理的土壤更强。在pH值调至2.8的土壤中，二氧化碳释放的滞后时间增加了1天，同时添加10,000 ppm锌（而非1000 ppm锌）或1000 ppm镉（而非100 ppm镉）会进一步延长滞后时间。在酸化至pH值为3.6至4.2的土壤中，添加100或250 ppm镉或1000 ppm锌会进一步抑制黑曲霉的生长。