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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 order to estimate the agricultural economic losses caused by acid deposition in the provinces of Jiangsu, Zhejiang, Anhui, Fujian, Hunan, Hubei and Jiangxi provinces, the field open-top fumigation devices were applied to rice, wheat, barley, cotton, soybean, rape, tomato and carrot And nine kinds of beans to simulate the acid rain and SO2 single treatment and compound treatment. A single impact model and compound impact model of acid rain pH value and SO2 concentration on crop yield were established to deduct the crop yield reduction caused by acid deposition in seven provinces under natural conditions and the market price method was used to estimate and analyze the agricultural settlement Economic losses. The analysis shows that the acid deposition has caused a certain degree of harm to the agricultural production in the seven provinces. The sown area of the main crops affected by the acid deposition in the seven provinces reached 9,918,300 hm2, with a yield reduction of 5,624,100 tons and the economic loss of about 36.99 100 million yuan.