Environmental Geology

, 50:911

Impact of land-use change on soil properties in a typical karst agricultural region of Southwest China: a case study of Xiaojiang watershed, Yunnan

Authors

    • College of Resources and Environment ScienceSouthwest University
  • Dao-Xian Yuan
    • College of Resources and Environment ScienceSouthwest University
    • Institute of Karst GeologyCAGS, Karst Dynamics Laboratory
  • Cheng Zhang
    • College of Resources and Environment ScienceSouthwest University
    • Institute of Karst GeologyCAGS, Karst Dynamics Laboratory
  • Ming-Sheng Kuang
    • College of Resources and Environment ScienceSouthwest University
  • Jian-Li Wang
    • College of Resources and Environment ScienceSouthwest University
  • Shi-You Xie
    • College of Resources and Environment ScienceSouthwest University
  • Lin-Li Li
    • College of Resources and Environment ScienceSouthwest University
  • Gui Zhang
    • Institute of Geology Investigation in Yunnan Province
  • Rao-Sheng He
    • Institute of Geology Investigation in Yunnan Province
Original Article

DOI: 10.1007/s00254-006-0262-9

Cite this article as:
Jiang, Y., Yuan, D., Zhang, C. et al. Environ Geol (2006) 50: 911. doi:10.1007/s00254-006-0262-9

Abstract

Xiaojiang watershed is a typical karst agricultural region of Yunan Province, China. A case study of land-use changes documents changes of soil properties from 1982 to 2003. The results are as follows: (1) The total land use transformed covers 610.12 km2, of which land use changed from unused land into cultivated land and forestland, and forestland into cultivated land during the past 20 years in Xiaojiang watershed. (2) The rapid growth of population and economic development were the main driving forces of cultivated land increase. (3) Soil properties showed modification owing to different land-use changes. The contents of the soil organic matter, total nitrogen, and total phosphorus in 2003 were significantly lower than that in 1982 after the forestland and unused land were transformed into the cultivated land, but the soil pH increased significantly in 2003. Organic matter, total nitrogen, and total phosphorus for shorter-time reforestation land declined, but the pH increased. Soil properties have improved significantly after cropland was transformed into orchard land. The organic matter, total nitrogen, total phosphorus, available nitrogen, and available phosphorus declined significantly, but pH increased significantly after rock desertification.

Keywords

Land-use change Soil properties Typical karst agricultural region Yunnan Province China

Copyright information

© Springer-Verlag 2006