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立地质量(或林地质量)指的是林地生长树木的能力。所以,立地质量的评价与用农作物测算土地生产力是一致的。美国森林立地质量的研究,自三十年代中期Coil所做的南方松类土壤——立地研究以来有了极大的发展。Coil(1952)第一个发表了关于立地研究的综合评论。较新近的作者有:Rennie(1962)、Rowe(1962)、Ralston(1964,1967),Jones(1969)和Spurr与Rowe(1973)。另有关于杨树立地的评论(Heinelman等,1955,1967),糖槭(Post,
Site quality (or woodland quality) refers to the ability of woodlands to grow trees. Therefore, the evaluation of site quality is consistent with the calculation of land productivity using crops. Research into the quality of forest sites in the United States has seen tremendous growth since the southern pine-soil-site study by Coil in the mid-1930s. Coil (1952) first published a comprehensive review of site research. More recent authors are Rennie (1962), Rowe (1962), Ralston (1964, 1967), Jones (1969) and Spurr and Rowe (1973). Additional comments on poplar sites (Heinelman et al., 1955, 1967), Post,