GIS-based Classification of Land in Rubber Plantations
Ou Bin · Chinese Journal of Tropical Agriculture · 2009
According to the grading method for cultivated land and the growth characteristics of rubber trees in Hainan Province, land in rubber plantations was graded based on GIS, taking Longjiang State Farm in Baisha, Hainan Province as an example. The Delphi method was used to select 14 parameters for grading, and the Analytical Hierarchy Process (AHP) in combination with the entropy method was applied to identify weighting of the parameters in the area under study. Grading units were created by dividing the plot of land. The data of the grading parameters were calculated to set up a multi-level grading system for the rubber plantation land, composed of nature, land utilization and economy. At last, 5% of land grading units were collated in the field, and 97% of the units were found to contain the data agreeable to the field. This indicates that the land grading results of the rubber plantations calculated by this method accord with the fact.