What is the fire barrier used by the Yi people to raise cattle?
The Yi people have been engaged in slash-and-burn agriculture since ancient times. Song Lu travels in the "Old School Note":
In the remote mountainous areas of Chen, Shen, Jing and other states, people "burned the mountains and cultivated them, and they only planted the beans. If there is not enough food, they will hunter the wild beasts...". The Song Ren Yuan Shenru’s "The Conquest of the Sui Road" also said: "There are many mountains in the Shenxiang area, and the farmer only grows the millet, and most of them are in the Gangzi. Whenever they want to plant, they first cut down their trees and set them on fire.
When it is cold, it is planted in the middle, if it is, it must be believed, Geshi is called slash-and-burn ground." The original production method of this kind of slash-and-burn is still visible. The fire-proof isolation belt of the ä¾— ä¾— is set between two forests, a few meters wide. To more than ten meters, it plays the role of "wind and fire prevention" when burning the ground, and is an important measure to protect forest resources.
In addition, the Yi custom has to burn cattle quilts every year (that is, the grass slopes where the cattle are stocked). The cattle raising is a fixed place, and fire barriers are also provided. Therefore, forest fires rarely occur in the Yi area in history. It plays an important role in maintaining the stability of local forest ecosystems.
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