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对设在湖南、湖北、四川３省共２０个县的现有马尾松水土保持林４５５块样地及３０个径流场进行了调查分析．建立了马尾松水土保持林地年径流量和侵蚀模数的预测模型；应用主成分分析方法和判别分析方法，建立了包括乔木生物色、灌木草本生物量、枯落物生物量、剖面总孔隙度和地表总孔隙度的马尾松水土保持林综合功能等级的评价模型；运用结构决定功能原理，结合林分生长、林分生物量、土壤孔隙度、植被截雨量、年径流量和侵蚀模数的预测模型、编制了马尾松水土保持林优良林分的功能计量表．
A total of 455 plots of Pinus massoniana forest and 30 runoffs in 20 counties in Hunan, Hubei and Sichuan provinces were surveyed. A prediction model of annual runoff and erosion modulus of Pinus massoniana forest was established. Principal component analysis (PCA) and discriminant analysis were used to establish a prediction model of tree biomass, shrub herb biomass, litter biomass, total porosity And the total surface porosity of Pinus massoniana forest integrated functional level assessment model; the use of structural determination of functional principles, combined with stand growth, stand biomass, soil porosity, vegetation cutoff, annual runoff and erosion modulus Prediction model, the functional measurement scale of Pinus massoniana forest stands was compiled.