Abstract
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.
Highlights
The conception of forest health was generated for plantation forest problems: the diseases, insect pests, fire, recession and so on (Callieott and Haskell, 1992; Chen et al, 2002)
The health status of 912 plots polar birch secondary stands in the farm 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 subhealthy plots, 154 healthy plots and there was no disease and high quality plots
Summary
The conception of forest health was generated for plantation forest problems: the diseases, insect pests, fire, recession and so on (Callieott and Haskell, 1992; Chen et al, 2002). In 1930, the United States in view of the plantation forest threat by long-term drought, diseases and insect pests, the FIA (Forest Inventory and Analysis) project was established. The forest health assessment index systems have focus on forest ecosystem structure. The forest health assessment index systems focus on both forest ecosystem and product function was an unresolved problem. The study will provide an applicable approach to monitoring and evaluating the state of health of the dynamic forest ecosystem and provide a theoretical foundation for the making of plans for the sustainable management of the forest
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