Research on division treatment to eco-construction of karst rock deserted land in southwest China karst area

The necessity of division treatment for rocky desertification is expounded. In terms of the distribution characteristics of karst rocky desertification land and the diversity of regional natural geography, social economy, and biology resources, eight karst rocky desertification comprehensive treatment divisions in southwest karst regions of China, i.e., middle and higher mountain, karst graben basin, karst plateau, karst gorge, peak cluster marsh land, karst trough valley, peak cluster plain, and karst hilly marsh land (trough valley), are divided. And the main restricting factors for the implementation of ecological restoration in each comprehensive treatment division are induced and summarized. Furthermore, the construction emphases and main measures for the implementation of ecological restoration in each division are determined. In the middle and higher mountain division, the emphases are to close the land for reforestation and growing grasses, and build up ecological protection forest and firewood forest as well as develop ecological tourist industry by using natural landscape and raw ecological culture.In karst graben basin division, the measures of closing the land for reforestation and grasses along the mountainous land of the basin will be made. And, the water conservancy facilities in the basin will be repaired for the construction of high yield economic forest or Chinese herbal medicine base. In karst plateau division, the current forest and grass vegetation will be well protected, and the water conservation forest and economic forest will also enjoy active development. Moreover, the ecological system structure will be improved, ecological economy type industry will be cultivated, as well as the ecological resettlement will reasonably be kicked out. In the karst gorge division, through the mixing of closing the land for reforestation and arbor and brush treatment, the ecological functions of karst vegetation will be raised. Also, the ecological tourist industry and feature agriculture, forestry, and animal husbandry will be actively developed. In the peak cluster marsh land, the measures of closing the land for reforestation and grasses, the development of south Asia tropical feature forest and the suitable ecological resettlement will be Implemented. In karst trough valley division, the ecological construction of rocky desertification division should be enhanced, and the ues degree of non rocky desertification division be upgraded. In peak cluster plain, to reasonably develop and use the water resources of both surface and underground, to close the land for reforestation and artificial reforestation, and to raise the ecological functions of forest and its landscape values. In the karst hilly marsh land (trough valley), along the Dongting Lake Basin and karst landscape division, the measures of closing the land for reforestation and grasses, artificial reforestation, firewood construction as well as the methane pool construction will be triggered.