山西省陵川县森林资源现状及动态变化分析

Analysis on Status and Dynamic Change of Forest Resources in Lingchuan County of Shanxi Province

根据陵川县2009年至2019年间的林地变更数据,采用统计分析方法对陵川县森林资源现状及动态变化进行了分析及预测。结果表明,在这10年间,陵川县森林面积平缓增长,年均增长量0.04×10^(4) hm^(2),年均增长率0.45%,预估到2025年、2030年、2035年,森林面积将分别达到9.63×10^(4) hm^(2)、9.83×10^(4) hm^(2)、10.04×10^(4) hm^(2);森林总蓄积持续增长,但年均增长量仅为4.04×10^(4) m^(3),年均增长率仅为1.34%,预估到2025年、2030年、2035年,森林总蓄积将分别达到358.41×10^(4) m^(3)、377.32×10^(4) m^(3)、396.22×10^(4) m^(3)。同时,乔木林优势树种结构合理,但需进一步优化;林龄组结构比例失调,急需改善龄组结构。

According to the data of forestland changes in Lingchuan County from 2009 to 2019,the statistical analysis method was used to analyze the current situation and dynamic changes of forest resources in Lingchuan County.The results showed that in the past 10 years,the forest area in Lingchuan County had kept a steady growth,with an average annual growth of 0.04×10^(4) hm^(2) and an average annual growth rate of 0.45%.It was estimated that by 2025,2030,and 2035,the forest area would respectively reach 9.63×10^(4) hm^(2),9.83×10^(4) hm^(2) and 10.04×10^(4) hm^(2).The total forest volume had maintained a growth,but the average annual growth rate was only 4.04×10^(4) m^(3) and the average annual growth rate was only 1.34%.It was estimated that by 2025,2030 and 2035,the total forest volume would respectively reach 358.41×10^(4) m^(3),377.32×10^(4) m^(3),and 396.22×10^(4) m^(3).Meanwhile,the structure of dominant tree species in the arbor forest was reasonable,but it needed to be further optimized.The proportion of forest age group structure was out of balance,which urgently needed improvement.