Abstract:
Data of fixed plots of continuous inventory for forest resources in Zhejiang province in 2018 and 2019 were collected for data modeling, among them, 10% of data were prepared for independent verification of standing volume, DBH and height. The models for standing volume growth, DBH and height were established with two modeling units and four forest groups (pine, Chinese fir, hard broad-leaved and soft broad-leaved), and that of multi-scale compatible model groups at the provincial, cities and counties level were established with conversion coefficient. The results indicated that the values of R2 for the volume growth models were greater than 0.63, with rRMSE smaller than 0.2, the values of R2 for DBH growth models were greater than 0.98, with rRMSE smaller than 0.1 , and the values of R2 for the height growth models were greater than 0.61 with rRMSE smaller than 0.2. The fitting effects of the model group were significant. The model groups were applied to the forest resources subcompartment data, the annual volume growth rates verification effect was good (R2 was 0.8109, rRMSE smaller than 0.2).