Abstract
With Landsa 8 OLI data, field investigation of the sample data and the ASTER GDEM elevation data as the foundation, this paper views Jiangle County, Sanming City, Fujian Province as the study area, and selects the stepwise-linear regression model, the backward-linear regression model and partial-least squares model to study the crown density distribution of the study area. On the ArcGIS Server for the. NET development （ADF） platform, this system combines with the spatial database technology, and sets up a distributed information system on forest crown density inversion which is based on B/S model, so that this system can carry out basic GIS operations, data query, the model factor calculation, forest canopy density model implementation, data editing and output functions, etc. Basically the system can meet the regional forest resources structure parameters analysis especially the unity of the crown density information management and processing requirements, and supports a platform for structural parameters, data normalization management and forest resources sharing services for Jiangle County, Sanming City.［Ch, 6 fig. 15 ref.］
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