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Therefore, in the Yanqingshi region along the northern coast of Jiangsu, it is imperative to adopt stable measures to increase the output of agricultural sciences. Among them, it is particularly important to build coastal farmland protection forests in large areas. It not only helps guarantee the country’s cotton production. Base - The high and stable output of crops in the coastal reclamation area also has great practical significance for solving the scarcity of timber in coastal areas and establishing forest bases.
When the wind passes through the forest belt, it is blocked by the forest belt to reduce the wind speed, which significantly exerts the windproof effect of the forest belt. According to the simple measurement of the growth season of cotton from 1959 to September, the windbreak effect of the forest belt has the following characteristics:
Through the monitoring and recording of the wind-related anemometer on wind-related factors, it can be clearly seen that the wind speed of each wind direction should be significantly reduced due to the forest belt's blocking effect. Take the Changhuang wind northeast wind in this area as an example, you can shake the tree near the forest on the windward side 3 times. At high altitudes, due to airflow obstruction, the wind speed began to drop at a rate of more than 18.91. After the forest has passed through the forest belt, the wind has weakened and the wind direction has changed due to the mechanical blockage of the forest belt. As a result, the eddy currents are formed and the wind speed is reduced more. The windbreak effect of the forest belt is not only related to the distance from the 1 belt, but also related to the size of the intersection angle between the wind direction and the forest belt. From this, the positive east wind with the forest belt's strike (the west direction of the west of Fujian) is available, and its windproof effect is the greatest. The positive south wind and the true north wind, which are close to the forest belt, are the least windproof.
Wind Direction Anemometer Detects the Influence of Wind Force in Northern Jiangsu Province
In the coastal areas of northern Jiangsu Province, there are about 600 kilometers of coastline, and the land area has reached about 21,000 square kilometers. During the growing season of spring crops, severe salinization often occurs due to less weather and high winds, affecting the emergence of crops, maintaining seedlings, and future growth and development, and setting up will cause death. The observation of strong winds on the coast can be analyzed using a wind anemometer.