苏、浙、皖、闽、湘、鄂、赣7省酸沉降农业危害——农业损失估算

Effect of acidic deposition on agriculture of Jiangsu, Zhejiang, Anhui, Fujian,Hunan, Hubei and Jiangxi provinces ——assessment of agricultural loss

为估算苏、浙、皖、闽、湘、鄂、赣７省由酸沉降造成的农业经济损失，利用野外开顶式熏气装置对水稻、小麦、大麦、棉花、大豆、油菜、番茄、胡萝卜和菜豆９种作物进行模拟酸雨与ＳＯ２的单独处理和复合处理。建立酸雨ｐＨ值和ＳＯ２浓度对农作物产量的单一影响模型和复合影响模型，从而推算出自然条件下７省农作物受酸沉降危害的减产量，利用市场价格法估算并分析酸沉降造成的７省农业经济损失。分析表明，酸沉降已对７省的农业生产造成了一定程度的危害，７省主要农作物受酸沉降影响播种面积达９９１．８３万ｈｍ２，减产５６２．４１万ｔ，经济损失约合３６．９９亿元。

In open-top chamber, nine kinds of crop, including rice, wheat, barley, cotton, soybean, rape,tomato,carrot and bean were treated with SO2 and simulated acid rain singly and in combination.Linear regression equations were used to establish causeeffect relations between rain acidity or/and concentration of SO2 and crop product. Then, crop production and economic loss from acidic deposition were estimated.