应用简单质量平衡法计算酸沉降临界负荷的研究

基于植物响应、土壤稳定性，铝浓度，碱度和ｐＨ标准，应用简单质量平衡法计算红壤各种土的酸沉降临界负荷。结果表明，沙质红泥土，红沙土，潮沙土、中度侵蚀红壤和潮沙泥土的酸沉降临界负荷较低，棕泥土和红壤土较大；

Calculation of Critical Loads for Acid Deposition with the Simple Mass Balance Method

Based on criteria of plant response,soil stability,aluminum concentration,alkalinity and pH,critical loads of acid deposition for all kinds of red earth in Liuzhou area were calculated by using the simple mass balance method.The results indicate the following:sandy red earth,red sandy soil,fluvo-aquic sandy soil,middling-erosion red earth and fluvo-aquic sandy red earth have lower critical load values of acid deposition,cinnamon red earth and infant red earth have higher values;in order to protect 95% of the Liuzhou soil area from effects of acid deposition,critical loads of acidity,potential acidity,sulfur deposition and nitrogen deposition for red earth are 1.8 keq·hm^-2·a^-1,1.9keq·hm^-2·a^-1,0.70keq·hm^-2·a^-1 and 1 5keq·hm^-2·a^-1 respectively;critical load of acidity for surface water is 0.80 keq·hm^-2·a^-1.