Secondly, the decrease of forest area directly leads to the decrease of precipitation and groundwater level in Jinan, resulting in the shortage of drinking water in Jinan.
Thirdly, due to the promotion of global industrialization, the emission of carbon dioxide is increasing, which has caused the global greenhouse effect, resulting in long summer and short winter in Jinan. In recent years, the summer temperature in Jinan is significantly higher than before.
Fourth, individual factories discharged wastewater into Xiaoqing River, which once caused serious pollution to Xiaoqing River and had a serious impact on local environment and local human life.
5. With the acceleration of urbanization in Jinan, the ground temperature in the urban built-up area is higher than that in the surrounding countryside. This phenomenon is called "urban heat island effect". The main reason for the formation of "urban heat island effect" is the change of the original radiation balance caused by urbanization effect. The number of frost days in cities is obviously less than that in suburbs. Urban heat island effect changes the quantity and distribution of heat resources, and has an important impact on urban human settlements and urban ecosystems.
6. Due to automobile exhaust and factory exhaust, the air pollution index in Jinan is increasing year by year, which will increase people's chances of suffering from respiratory diseases and adversely affect their daily travel.
Probably these aspects can be used for reference.
I come from the middle school attached to Shanda ... Hehe, let's work together.