JOURNAL OF NATURAL RESOURCES ›› 2019, Vol. 34 ›› Issue (3): 600-612.doi: 10.31497/zrzyxb.20190313

• Resource Evaluation • Previous Articles     Next Articles

Evaluation on security of land use change in rocky desertification control areas: Taking Huajiang, Hongfenghu and Yachi as examples

LUO Ya1(), XIONG Kang-ning1(), LI Yong-yao2, YING Bin1, WEI Qing-zhang3   

  1. 1. Guizhou Normal University/State Engineering Technology Institute for Karst Desertification Control, Guiyang 550001, China
    2. Bijie Science and Technology Bureau, Bijie 551700, Guizhou, China
    3. Bijie Management Center for Rocky Desertification Control, Bijie 551700, Guizhou, China
  • Received:2018-09-05 Revised:2018-12-13 Online:2019-03-28 Published:2019-03-28

Abstract:

The security of land use change is one of the important criteria for evaluating sustainable land use. The study takes Huajiang, Hongfenghu and Yachi rocky desertification control areas as examples, evaluates the security of land use change of rocky desertification control areas based on the "vertical-and-horizontal" method, and provides reference for evaluating the impact of land use change on rocky desertification and improving the land use pattern in the study areas. The results show that: (1) Land use change in the rocky desertification control areas is evident. The proportion of land use change in Huajiang, Hongfenghu and Yachi is 2.85%, 3.34% and 37.88%, respectively. Forest and construction land increased, while farmland and unused land decreased. (2) The comprehensive security and ecological, economic and social securities of land use change in different areas are different. The comprehensive security of Huajiang and Hongfenghu rose by 1.44% and 0.46%, while that of Yachi declined by 1.9%. In the Huajiang control area, the ecological and social securities were raised, and the economic security was declined. In the Hongfenghu control area, the ecological security rose, the economic security did not change remarkably, and the social security declined a little. In the Yachi control area, the ecological security declined significantly, the economic security rose a little, and the social security declined slightly. (3) The sensitivities of ecological, economic and social securities to land use change are different obviously, and ecological security is the most sensitive among these securities. The results reveal that the effect of land use change on ecological security is most obvious. In the follow-up rocky desertification control and land use planning, we should focus on the effect of land use change on ecological security.

Key words: security, land use change, rocky desertification, "vertical-and-horizontal" method