A studyon the Lodels of eco-agricultural developLent in typical Karst Gorge Region—A case study from Dingtan District of Huajiang Gorge in Guizhou Province

Taking Dingtan District of Huajiang Gorge as an example，the natural conditions，the development current of rocky desertification，and the models of eco-agricultural development for controlling the rocky desertification such as‘Chinese prickly ash+breed pigs+marsh gas’model，‘Alpinazerumbet（pers）Burtt+breed pigs+marshgas’model，‘grain crops and economic plants+Chinese prickly ash or Alpina zerumbet（pers）Burtt’model and its development countermeasures are put forward.