Traditional Culture Encyclopedia - Weather forecast - The weather in Guangdong is dry.
The weather in Guangdong is dry.
Climate anomaly is the direct cause of drought disaster, but its harm degree is also related to socio-economic conditions. For example, abnormal atmospheric circulation, a region controlled by high pressure for a long time, is the meteorological cause of drought; Topography also plays an important role in the formation of drought disasters. For example, the warm and humid air flow in summer is affected by mountains, which can make the precipitation on the leeward side of mountains obviously less and prone to drought disasters; Soil vegetation status and water conservancy facilities are also closely related to the occurrence of drought; The soil with deep soil layer and fine texture has strong water retention and storage capacity, and the drought disaster is light. On the contrary. It's heavier; Human activities also have a certain impact on the occurrence of drought disasters, such as deforestation, which leads to the deterioration of agricultural ecology and the increase of the probability of dry years. As far as the impact on agricultural production in Guangdong is concerned, there are mainly two kinds of drought: spring drought, autumn drought, summer drought and winter drought, but the duration of summer drought is generally short and the scope is small; It is normal to have less rain in winter, and planting in winter is mostly dry, which requires less water and is more drought-tolerant.
First of all, from the perspective of physical geography, it is not only the drought in Guangdong, but also many southern provinces (such as Fujian and Zhejiang) are relatively dry this spring.
The reason is that, controlled by the subtropical high pressure belt, the intensity of cold air in the south is weak and the intensity of warm air is strong this year, resulting in less precipitation than in previous years.
However, for the eastern part of China, as a humid and semi-humid area, the causes of drought and even drought disasters are more human factors.
The population density in the east of China is high, and the water consumption is much higher than that in the west. As a populous province and an economically developed region, Guangdong has a large water consumption and a small per capita water consumption.
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