林地基本信息 Basic info
位置 Location ： 科尔沁后旗阿古拉镇 Agula, Keerqinhouqi
面积 Area ： 2150亩 / 143.33 hectares
树种 Species ：樟子松、五角枫、柳树; Pine, Maple, Willow
图 1. 2017年林地卫星图
Image 1. 2017 Forest satellite map
2017年，MTP项目与内蒙古通辽市科尔沁左翼后旗林业局合作，在1个沙荒地进行了生态修复，造林树种包括樟子松、五角枫、柳树、黄檗、小叶锦鸡儿等，其中主体造林以樟子松为主，道路防风带以五角枫等为主，内部沙化区域栽植了小叶锦鸡儿等灌木并穿插种植柳树、黄檗。
In 2017, cooperating with the Forestry Bureau in Keerqinzuoyihou Qi, Tongliao, MTP contributed to the ecological restoration in one sandy land by planting a mix of Pinus sylvestris L. var. mongolica Litv. (scotch pines), Acer mono (maples), willows, phellodendron amurens and caragana microphylla Lam. The main species is scotch pine. Maple trees were planted as the windbreak. While caragana were planted in some part of the desertified areas. Among them, a few willows and p. amurenses spread out over the plot.
图2. 2017-1林地樟子松生长数据
Image 2. The growth data of pines in Plot 2017-1
2017年项目地块立地条件较差，具体表现为：地势起伏显著、栽植区域破碎化，且林地整体呈狭长带状沿道路东西向延伸。受此地形特征影响，栽植与抚育效率较高，最终反映为林木保存率表现良好。经调查核算，2025年度总体保存率78.75%。通过林地测量表明，林地内樟子松保存率持续维持高位；五角枫树势近两年趋于稳定，其保存率波动幅度显著收窄。
The condition of the Plot 2017-1 was poor, but the shape of the site was long and narrow, running along the road from east to west. Influenced by these special features, the efficiency of planting and nurturing was high, ultimately resulting in a favorable survival rate for the forest stand. The overall survival rate in 2025 was 78.75%. The measurement shows that the survival rate of pines has consistently maintained a high level. Meanwhile, the vigor of maples has stabilized over the past two years, with the fluctuation range of its survival rate narrowing significantly.
图3. 历年各树种保存率对比
Image 3. Survival rates of each tree species over years
樟子松与五角枫生长态势呈现显著分化。樟子松生长健康，2020年后进入快速生长期，树高、地径、胸径等核心指标同步显著提升。
The growth dynamics of pines and maples showed significant differentiation. The pines remained in a healthy condition and entered a rapid growth phase after 2020, with core indicators—including tree height, basal diameter, and diameter at breast height (DBH)—increasing significantly.
图4. 樟子松树高均值变化对比
Image 4. Changes of average tree height of pines over years
图5. 樟子松地径和胸径均值变化对比
Image 5. Changes of average basal diameter and DBH of pines over years
五角枫经历阶段性衰退（含大面积死亡事件），后经系统性补植，目前树势逐步恢复，生长差距持续收窄。
The maples experienced a period of regional decline (including a large-scale mortality event); however, following systematic replanting, its vigor is progressively recovering, and the growth gap is consistently narrowing.
图6. 五角枫树高均值变化对比
Image 6. Changes of average tree height of maples over years
图7. 五角枫地径均值变化对比
Image 7. Changes of average basal diameter of maples over years
受地形复杂性影响，该林地抚育质量与树种生长呈现显著空间分异：樟子松集中分布于道路邻近区，得益于高效抚育管理，其生长态势持续优化；五角枫栽植区多位于远离道路地带，受放牧干扰严重，普遍出现主干死亡、萌蘖更新现象（需持续监测其恢复进程）。整体而言，林地植被覆盖度良好，生态修复功能稳定发挥。
Driven by topographical complexity, the nurturing quality and species growth showed significant spatial differentiation: Pines was concentrated in areas adjacent to roads and, benefiting from high-efficiency nurturing management, its growth trend continued to optimize. In contrast, the maples were mostly located in remote areas far from roads, where they suffered from severe grazing interference. Consequently, maples commonly exhibited main trunk mortality followed by resprouting (requiring continuous monitoring of the recovery process). Overall, the forest maintains good vegetation coverage, and its ecological restoration functions are functioning stably.
图8. 林地航拍图，2025.7.24
Image 8. The aerial photo, July 24, 2025
图9. 林地地面照片，2025.10.30
Image 9. The ground photo, October 30, 2025
