RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2017, Vol. 26 >> Issue (12): 2073-.doi: 10.11870/cjlyzyyhj201712016

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LAND USE CHANGE AND ITS DRIVING MECHANISM IN SMALLSCALE #br# ROCKY DESERTIFICATION CONTROL AREA#br# ——TAKE THE HUAJIANG ROCKY #br# DESERTIFICATION CONTROL AREA AS AN EXAMPLE

PENG Ruiwen1,LUO Ya1,CHEN Qiwei2,LI Yongyao3   

  1. (1.School of Geographic and Environmental Science, Guizhou Normal University, Guiyang 55000, China;2.Department of
    Geography and Tourism, Guizhou Normal College, Guiyang 550018, China;3.Bijie Science and Technology Bureau, Bijie 551700, China)
  • Online:2017-12-20

Abstract: The study of smallscale land use change in rocky desertification control area will help to deeply analyze the temporalspatial variation law, driving force and resource environment effect of land use change in karst area. By using stepwise multiple regression method, this research analyzed the land use change and its driving mechanism in rocky desertification control area. The results showed that: ①From 2005 to 2012, the area of rocky desertification decreased 46.63 hm2, which from 2 824.23 hm2 to 2 777.60 hm2. Meanwhile, the degree of rocky desertification declined, the no obvious rocky desertification and moderate rocky desertification lands increased 12.68% and 3.08%, and the potential rocky desertification, slight rocky desertification and intense rocky desertification lands decreased 5.11%, 2.07% and 5.24%, respectively. Among the three types of rocky desertification change(which including stable type, restored type and degenerated type), the proportion of the stable type in the karst area was 95.4%,and it had the smallest proportion of land use change, which was only 1.15% showing the land use was stable. The proportion of the restored type in the karst area was 3.95%, and it had the biggest proportion of land use change, which was 40.64% showing as the land use changed drastically. The proportion of degenerated type in the karst area was only 0.65%, and the proportion of land use change was 22.21% showing as the land use changed more obvious. ②The main feature of land use change was presented by the reduce of garden plot. There were four factors to drive the land use change, which including the changes of the average labor′s average schooling years, the proportion of household laborers, the local nonagricultural income and the income of migrant farmers. Among the four factors, the garden plot change showed a significant positive correlation with the local nonagricultural income change, which the regression coefficient was 0.691, and showed a significant negative correlation with the changes of the average labor′s average schooling years, the proportion of household laborers and the income of migrant farmer, which the regression coefficient was -0.472,-9.735 and -0.443, respectively. The proportion of household laborers was the major factor driving the land use changed. ③There are two factors, include China′s demand for building ecocivilization by implementing Grain for Green Policy, industrialization and urbanization, and farmers′ demand for becoming rich by improving their cultural quality and adjusting their employment behaviors, to macroscopically and microscopically encourage the rural labor transfer and industry transformation, and then collectively drive the land use change in the rocky desertification control areas.

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