Application of Holdridge life-zone model based on the terrain factor in Xinjiang Automous Region
  • 【DOI】

    10.3321/j.issn:1001-0742.2005.06.035

  • 【摘要】

    This study improved the application of the Holdridge life-zone model to simulate the distribution of desert vegetation in China which gives statistics to support eco-recovery and ecosystem reconstruct... 展开>>This study improved the application of the Holdridge life-zone model to simulate the distribution of desert vegetation in China which gives statistics to support eco-recovery and ecosystem reconstruction in desert area. This study classified the desert vegetation into four types: (1) LAD: little arbor desert; (2) SD: shrub desert; (3) HLHSD: half-shrub, little half-shrub desert; (4) LHSCD: little halfshrub cushion desert. Based on the classification of Xinjiang desert vegetation, the classical Holdridge life-zone model was used to simulate Xinjiang desert vegetation's distribution and compare the Kappa coefficient result of the model with table of accuracy represented by Kappa values. The Kappa value of the model was only 0.19, it means the simulation result was poor. To improve the life-zone model application to Xinjiang desert vegetation type, a set of plot standards for terrain factors was developed by using the plot standard as the reclassification criterion to climate sub-regime. Then the desert vegetation in Xinjiang was simulated. The average Kappa value of the second simulation to the respective climate regime was 0.45. The Kappa value of final modeling result was 0.64, which is the better value.The modification of the model made it in more application region. In the end, the model' s ecological relevance to the Xinjiang desert vegetation types was studied. 收起<<

  • 【作者】

  • 【作者单位】

    Research Center for Eco-Environmental Sciences

  • 【刊期】

    环境科学学报(英文版) ISTIC SCI 2005年6期

  • 【关键词】

    Xinjiang  desert vegetation types  Holdridge life-zone  terrain  climate regime 

  • 【基金项目】

    The National Key Technologies Research and Development Programe of China