冀北山区不同土地利用类型景观功能评价

Landscape function assessment for different types of land-use in northern Hebei mountain

为探讨在区域尺度上监测或定量评价地类景观功能,采用LFA方法对6种土地利用类型进行分析,评价不同土地利用类型对林地地表土壤性能的影响。研究结果表明:冀北山区不同土地利用类型对表征地表土壤健康的3个指标(土壤结构稳定性指标Sa、渗透性指标If、养分循环指标Ne)有极显著影响;其中,落叶松人工林、油松人工林及研究区的混交林,在改良林地土壤结构稳定性、渗透性和养分循环等性能方面的作用较明显,而荒山荒地改良效果最差,从而验证了LFA方法在区域尺度上评价不同土地利用类型林地土壤性能优劣可发挥重要作用。

Aiming to monitor or evaluate landscape function for different types of land-use on region scale,the LFA（Landscape Function Analysis）method was used to evaluate 6land types and the effects of different types of land-use on soil properties.The results showed that the affects of different types of land-use are distinctly different.The soil properties（structure stability,infiltration,nutrients cycle）of Larix principis-rupprechtii and Pinus tabulaeformis plantation and the mixed forest are the best while that of barren hills and wasteland is the worst.The LFA assessment of different land-use types on soil properties plays an important role.