Study on Forest Stock in Qingdao City Based on Typical Plots
[Objective]Forest stock volume is an important indicator for measuring the overall size and level of regional forests,and is a direct reflection of forest productivity and forest carbon stocks.In order to understand the overall level of forests in Qingdao city,a study was conducted on the stock volume of arbor forests in Qingdao based on typical sample plots.[Method]Based on the land change survey data in 2022 and the comprehensive monitoring data of forest and grass ecology in 2021,165 typical plots were set up in Qingdao to estimate the forest forest stock.[Result]The results showed that the total stock of arbor forest in Qingdao is 11 511 808.17 m3,the total area of arbor forest is 144 907.05 hm2,and the average hectare stock of arbor forest is 79.44 m3·hm-2.Among various forest types,the pure poplar forest has the highest stock(5 117 779.33 m3),accounting for 44.46%,but the lowest per hectare stock(76.65 m3·hm-2).The pure locust forest has only 11.16%and 9.23%stock and area,but the highest per hectare stock is 96.08%.In each age group,the stock of middle aged forests(3 698 740.02 m3)＞young forests(2 720 437.01 m3)＞mature forests(2 357 913.15 m3)＞near mature forests(2 073 737.64 m3)＞over mature forests(660 980.34 m3).Among all districts,the west coast of Qingdao new districtthe has the highest storage stock(3 614 087.58 m3),while the Shibei district has the lowest storage stock(30 661.79 m3).[Conclusion]The overall forest condition and forest productivity of pure and mixed Robinia pseudoacacia forests in Qingdao are higher than those of other forest types.In the future,forest tending work should focus more on improving and transforming the forest quality of pure poplar and black pine forests.The overall forest situation in Qingdao is in the early and middle stages of growth,and there is great room for future growth in forest stock.
NETL
NSTL
万方数据
