Health Evaluation of Public Welfare Forest in Dashuigou Forest Area Based on Second-Class Survey Data of Forest Resources
The health degree of public forest in Dashuigou forest area of Baiyun Mountain State-Owned Forest Farm in Gejiu City was analyzed on the basis of the second-class survey data of forest resources.Taking Dashui-gou forest area of Baiyun Mountain State-Owned Forest Farm in Gejiu City as the research area,based on the data of the second-class survey of forest resources in 2020,the health evaluation index system of ecological public for-est was constructed,and the health evaluation and spatial analysis were carried out for the public forest.Results:① the forest health index of broadleaf mixed forest was the highest,and that of coniferous pure forest was the lowest.② mixed broad-leaved forest,mixed coniferous forest and relatively pure broad-leaved forest are in sub-health state,and the forest health level is relatively high;mixed coniferous forest and relatively pure coniferous forest are in sub-health and medium health state;forest health is in medium level,and pure broad-leaved forest is in unhealthy state,and forest health level is low;③ there are more broad-leaved forests and coniferous forests in Dashuigou Forest area,and the tree species structure is mainly excellent,and the tree species structure grade is higher;The forest disaster level and forest system renewal level are medium.The average DBH of trees belongs to the medium category.The vegetation coverage of understory is medium level.With high canopy closure,the age of forest is mainly middle-aged forest,near mature forest and mature forest,and the age structure of forest is rea-sonable.④ the proportion of natural forest health and sub-health is higher than that of plantation,and the propor-tion of unhealthy and moderate health is lower than that of plantation.The quality of non-commercial forest re-sources in Dashuigou Forest area of Baiyun Mountain State-Owned Forest Farm in Gejiu City is excellent;the coverage rate of forest area is high;the overall development of forest area is medium and high,showing a trend of upward sustainable development,but the proportion of mature forest is too high,and the forest age structure should be adjusted appropriately.
NETL
NSTL
万方数据
