| 孙华倩,杨忠兴,陈春祥,杨 东,孔维民,张 淼,赵昌奎,朱高凡,廖雨秋.基于土地利用动态度模型的森林资源动态变化分析——以滇西北老君山为例[J].林业调查规划,2026,51(2):58-67 |
| 基于土地利用动态度模型的森林资源动态变化分析——以滇西北老君山为例 |
| Dynamic Changes of Forest Resources Based on Land Use Dynamic Degree Model——A Case Study of Laojun Mountain in Northwest Yunnan |
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| DOI： |
| 中文关键词: 森林资源 动态变化 土地利用动态度模型 滇西北老君山 |
| 英文关键词: forest resources dynamic change land use dynamic degree model Laojun Mountain in
northwest Yunnan |
| 基金项目:滇西北老君山科学考察(4530700HT202300042). |
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| 中文摘要: |
| 以研究区2008、2017、2024年森林资源调查监测数据为基础,基于GIS技术,利用土地利用动态度模型对森林资源进行动态分析。结果表明,研究区土地类型以林地为主,且动态变化最小;2017—2024年间草地面积变化较大,动态度达14.76%;建设用地面积呈增长趋势,两期动态度分别为24.95%和12.73%;水域面积呈增长趋势,变化较大,动态度达9.81%;两个监测期内的综合土地利用动态度分别为0.39%和0.65%,土地利用年变化率小;2008—2017年间,园地在保护地外的变化较保护地内大,其他类型差异不大,2017—2024年间草地在保护地外的变化较保护地内大,园地、建设用地、水域、未利用地在保护地内的变化较保护地外大。在林地中,3个调查年度面积最大的为有林地,研究区总面积占比均在 77.94%以上,林业用地面积占比均在90.85%以上,2008—2024年间总体呈增长趋势;2008—2017年间森林覆盖率逐年增长,2017—2024年间有所减少,但与2008年相比有所增长。蓄积量以有林地为主,并逐年增长;乔木林地中,面积、蓄积量均以云南松、冷杉、栎类、高山松为主;幼龄林和过熟林面积较少,近熟林和成熟林占比相对均衡,中龄林占比最高,反映出研究区龄组结构处于生长旺盛期,后备资源丰富。研究区生态公益林面积逐年增长,生态保护力度不断加强,天然林面积占比达76%以上,表明森林质量和生态价值高。 |
| 英文摘要: |
| Based on forest resource survey and monitoring data from 2008, 2017, and 2024 in the study area, using GIS technology and dynamic models, a dynamic analysis of the forest resources was conducted. The results indicated that the primary land type in the study area was forest land, with the least dynamic changes. Grassland area showed significant changes between 2017 and 2024, with a dynamic rate of 14.76%. Construction land area showed an increasing trend, with dynamic degrees of 24.95% and 12.73% for the two periods, respectively. Water area also increased significantly, with a dynamic degree of 9.81%. The comprehensive land use dynamic degrees for the two monitoring periods were 0.39% and 0.65%, indicating a low annual rate of land use change. From 2008 to 2017, garden land outside protected areas changed more than within, while other types did not differ significantly. Between 2017 and 2024, changes in grassland were greater outside protected areas, while changes in garden land, construction land, water area, and unused land were greater inside protected areas. Among forest land types, wooded land accounted for the largest area in all three survey years, comprising over 77.94% of the total study area and over 90.85% of the total forestry land area, showing an overall increasing trend from 2008 to 2024. Forest coverage increased annually between 2008 and 2017 but slightly decreased between 2017 and 2024, though it remained higher than in 2008. Growing stock was dominated by wooded land and increased annually. Among arbor forests, the area and growing stock were mainly composed of Pinus yunnanensis, Abies, Quercus and Pinus densata. The areas of young and over-mature forests were relatively small, while near-mature and mature forests were relatively balanced, and middle-aged forests were the most abundant. This reflected a vigorous growth stage and abundant reserve resources in the age structure of the study area. The area of ecological public welfare forests increased annually, indicating strengthened ecological protection efforts. Natural forests accounted for over 76% of the total forest area, highlighting the high quality and ecological value of the forests in the region. |
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