When does the rainy season begin in Horqin grassland?

Conclusion: The rainy season in Horqin Grassland usually begins in the middle and late June and ends in the middle of August.

Content analysis:

First of all, Horqin Grassland is located in the northeast of Inner Mongolia Autonomous Region, belonging to temperate continental grassland climate, with four distinct seasons, short summer and relatively long spring and autumn. According to the meteorological records of Horqin grassland for more than 60 years, the rainy season generally appears in the middle and late June to the middle of August, lasting about 2 months. The average rainfall in this period is about 200-350 mm, accounting for more than 60-70% of the annual rainfall, which has obvious rainy season characteristics.

Secondly, Horqin grassland entered midsummer in the middle and late June, and the frequency and intensity of rainfall increased due to the influence of southwest monsoon. The first half of July is the early rainy season, when the southwest monsoon strengthens and induces convective weather activities, which is the beginning of the rainy season. The middle rainy season is from late July to early August, when the southwest monsoon is the strongest and the wind shear is active, which is the main stage of the rainy season. Around mid-August, the southwest monsoon weakened and the rainy season began to turn to the end stage.

Thirdly, in the rainy season of Horqin grassland, extreme rainfall also occurs from time to time, such as heavy rain and heavy rain. It is easy to induce floods. From July, 2065438 to July, 2006, there was a general rainstorm in some areas of Horqin grassland, and the maximum 24-hour precipitation reached 194. 1 mm, causing local floods. Therefore, the rainy season is an important period for disaster prevention and reduction in Horqin grassland.

Finally, after the rainy season in Horqin grassland, it gradually turned into autumn, and the temperature began to drop and the rain decreased. In the middle and late September, the cooling rate in early autumn increased month-on-month, and the precipitation decreased significantly compared with that in June-August, marking the beginning of autumn.

To sum up, the rainy season in Horqin grassland is concentrated in the middle and late June to the middle of August, lasting about two months. During this period, influenced by the southwest monsoon, the precipitation increased obviously, which was the most concentrated period in the whole year and the key period for disaster prevention and mitigation. In the middle and late September, the temperature dropped and the precipitation decreased, marking the end of the rainy season and the beginning of autumn.

③ Suggestions:

1. Strengthen flood control in rainy season, dredge rivers in time and strengthen water conservancy facilities.

2. Before the rainy season, do a good job in grassland fire prevention to reduce fire hazards.

3. Strengthen drainage and road protection in key areas to prevent local waterlogging.

4. During the rainy season, strengthen meteorological monitoring and early warning to prevent the harm caused by extreme rainfall.

5. alfalfa and other grasses grow vigorously in the rainy season, so it is necessary to mow the livestock in time.

6. The rainy season is wet and rainy for a long time, so it is necessary to strengthen livestock epidemic prevention.

7. Before the rainy season comes, we should reserve forage to prevent the shortage of forage in rainy season.

8. It is suitable for some ecological restoration or environmental greening in rainy season.