What model does Bijie Yatang model belong to in Guizhou karst rocky desertification control?

Ecological agriculture. Duck pond model in Bijie City, Guizhou Province is to replace deforestation with ecological agriculture such as raising ducks, which has caused a lot of environmental problems caused by the destruction of forest and grass vegetation and the intensification of rocky desertification, while raising ducks has completely avoided this problem and increased the income of local people. It also restored the ecological environment, controlled soil erosion and delayed the spread of karst rocky desertification areas. Karst, or karst, refers to the geological action of water on soluble rocks (carbonate rocks, gypsum, rock salt, etc.). ), mainly chemical dissolution, supplemented by mechanical effects such as scouring, undercurrent and collapse of running water, and the general name of the phenomena produced by these effects. The landform formed by karst is called karst landform.