Forest Health Assessment in the Jingouling Forest Farm of Changbai Mountain Based on GIS and RS

摘要

Forest health is defined as the ability of forest to maintain ecosystem vitality and stability and the ability to provide the necessary ecological and forest product. In the study, the forest health status, which is the Jingouling Forest Farm of Changbai Mountain Poplar-Birch secondary forest, was assessed based on GIS and RS techniques. The forest health assessment index was filtered by the method of expert consultation. The forest health assessment index weight and value range were calculated by Analytic Hierarchy Process (AHP). The health status was divided into five grades: Disease, not health, sub-health, healthy and high quality. The results showed that there was 20 not health plots, 738 sub-healthy plots, 154 healthy plots and there was no disease and high quality plots. The conclusion was that most plots of Jingouling forest farm were in sub-healthy status. To improve the health situation, dominant factors should be determined to guide the further management of the stands.