山西省栎类资源现状及动态变化分析
Analysis of Quercus Resources Present Situation and Dynamic Change in Shanxi Province
马佳琳 1郭斌 1李新平 1王建义1
作者信息
- 1. 山西省林业和草原科学研究院,山西 太原 030012
- 折叠
摘要
以山西省第二次至第九次森林资源清查数据为基础,对山西栎类资源及分布现状、栎类林资源的动态变化、龄组结构变化进行了分析.结果表明,山西省栎类林面积为41.18×104 hm2,总蓄积量为2662.67 × 104 m3,总株数为41 180 × 104株.辽东栎林的面积、蓄积量占栎类林总资源的比重最大,分别为78.61％、80.70％.栎类林的单位面积蓄积量呈先下降后增长的趋势,在2015年达到最大值,蓄积量可达65 m3/hm2;栎类林的郁闭度先逐渐增大后趋于平缓,胸径呈先下降后增长的趋势.按合理的龄组结构来看,栎类林的龄组结构逐渐完善.栎类林面积和蓄积量变化量从2005年以后开始减少,因此,对栎林的保护、改造和发展应给予足够的重视.
Abstract
An analysis was conducted on the distribution status of Quercus resources in Shanxi,the dynamic changes of Quercus forest resources and the changes in age group structure based on the data from the second to ninth forest resource inventory in Shanxi Province.The results showed that the area of Quercus forests in Shanxi Province was 41.18 × 104 hm2,with a total volume of 2 662.67 × 104 m3 and a total number of 41 180 × 104 plants.The area and volume of Quercus liao-tungensis forests account for the largest proportion of total Quercus forest resources which were 78.61％and 80.70％re-spectively.The unit area accumulation of Quercus forests showed a trend of first decreasing and then increasing,reaching its maximum value in 2015 with an accumulation of up to 65 m3/hm2.The canopy closure of Quercus forests gradually in-creased and then tended to flatten,and the average breast height diameter showed a trend of first decreasing and then in-creasing.According to a reasonable age group structure,the age group structure of Quercus forests was gradually improving.The changes in the area and volume of Quercus forests had been decreasing since 2005.Therefore,sufficient attention should be paid to the protection,transformation and development of Quercus forests.
关键词
栎类/山西/资源/现状/动态变化Key words
Quercus/Shanxi/Resources/Current situation/Dynamic change引用本文复制引用
出版年
2024
NETL
NSTL
万方数据