摘要
本文通过对广西南宁、柳州山地森林土壤(0～5cm)进行模拟酸雨(pH5.6～3.1)土柱淋溶试验,连续淋溶1280mm模拟酸雨,研究了酸雨对土壤微生物活性的影响。酸雨对土壤呼吸作用抑制的程度与土壤特性及雨水酸度有关。pH3.1的模拟酸雨使硝化作用受到显著抑制。pH3.7、pH3.1的模拟酸雨连续淋溶有机氨的矿化作用激活或抑制取决于土壤本身特性。对土壤酶活性产生激活、抑制或无影响,与土壤及酶特性有关。
To study the effects of acid precipition on soil microbial activity, columns containing samples of mountain forest soils ( 0 - 5cm) from Nanning and Liuzhou were leached with a continuous application of 1280mm of simulated precipitation (pH5. 6 - 3. 1). The extent of reduction of soil respiration depended on the characteristics of soil and the pH of acid rain. The nitrification was significantly inhibited by simulated acid rain of pH3. 1. The stimulating or inhibiting effect on organic nitrogen mineralization in soil following continuous treatment of simulated acid rain of pH3. 7 and pH3. 1 depended on the soil characteristics. The effects of simulated acid rain on soil enzyme activities was stimulated, inhibited, or not affected depending on the characteristics of soil and enzymes.
出处
《环境科学研究》
EI
CAS
CSCD
1991年第3期37-41,共5页
Research of Environmental Sciences
