黄土区不同地类景观功能的综合评价方法

 为找到一种黄土区不同地类景观功能的综合评价方法,在蔡家川流域利用LFA方法(Landscape Function A-nalysis)对10种地类150块样地进行了调查、评价,共布设样线4 400多m。结果表明:LFA方法能够应用于植被斑块作用和样地土壤性能的评价;基于该方法,通过加权求和得到的景观功能值,能够综合反映植被斑块作用的大小和样地土壤性能的优劣;土地利用类型和坡度对景观功能有显著影响。通过多元线性回归,引入土地利用类型和坡度这2个变量能够得到计算样地景观功能值的方程,且所得回归方程结构较合理,计算精度较高,可以用于黄土区不同地类景观功能的综合评价。

A comprehensive evaluation method of landscape function for different land-use types in Loess region

For studying a comprehensive evaluation method of landscape function for different land-use types in Loess region,we investigated and evaluated 150 plots by LFA method（Landscape Function Analysis）in Caijiachuan Basin,laid a total of more than 4400 meters transects.The results showed that： LFA method can be used to evaluate the effect of vegetation patches and soil properties of plots;based on LFA method,with weighted sum,the value of landscape function can reflect the effect of vegetation patches and soil properties of plots comprehensively;land-use types and slope have a significant influence on landscape function,and a calculation equation of landscape function value was established.The conclusions are as following： the multiple linear regression equation has reasonable structure and relatively high accuracy,which can be used to evaluate landscape function for different land-use types comprehensively.