英文摘要 |
In the Qing Dynasty, the government offices in Northeast China were mainly set up in the river basins of the Sahaliyan Ula, Sunggari Ula, Non i Ula, Huncun Bira and Hūrha Bira. These areas not only had convenient land and water transportation, but also had flat, fertile land, which was conducive to agricultural development. The feature of the flood season was that although it brought abundant water resources, it tended to cause flood disasters. In particular, the Sunggari Ula was formed by the confluence of dozens of tributaries. In every flood season, the water volume of each tributary increased and converged on the main river. Such increases of river discharge posed flood threats to the government offices stationed along both sides of the river, and devastating blows to the crops. The crops cultivated in this area were mainly divided into summer early harvest and autumn harvest crops, and the land selected for cultivation had depressions and high mountains, so every time the floods came, the damage situations were completely different. However, the relief and expenditure registers policies formulated by the central government were effective for coping with emergencies at any time. |