The research of distribution status and resource characteristics of ancient and famous trees in Jing′an County
Based on the survey data of ancient and famous trees in Jing'an County in 2022,the resource characteristics such as the number,species,spatial distribution,structural characteristics and health status of ancient and famous trees were analyzed.The results showed that there were 2 939 ancient and famous trees in Jing'an County,belonging to 22 families,33 genera and 39 species.Camphora officinarum,Castanopsis sclerophylla,Pinus massoniana,Liquidambar formosana,Cupressus funebris were the main local tree species;the number of ancient and famous trees mainly distributed in rural areas was 2 838.The ancient and famous trees were mainly distributed at an altitude of 0～100 m,and the number of ancient and famous trees decreases as the altitude rises.The age,diameter at breast height(DBH),crown width and tree height structure of ancient and famous trees were pyramid shaped.The tree age was concentrated in 100～200 a with mainly grade 3 old trees,and the DBH was concentrated in 60～100 cm.The growth potential of old trees was correlated with the growth environment,ownership,elevation and other factors,the elevation was positively correlated with the growth potential,and the growth place was negatively correlated with the growth potential.,from the countryside to the urban area,the trend of the growth potential of the old and valuable trees has shifted from normal to weakened.It was recommended to protect and rejuvenate the weakened old and valuable trees in a timely manner,and actively carry out cultural publicity for the old trees with history and culture.
ancient and famous treesdistribution statusprotection measuresresource characteristicsgrowth potential
NETL
NSTL
万方数据
