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：1660亩 / 110.67 hectares
树种 Species：樟子松 Pines
图 1. 2018年林地卫星图
Image 1. 2018 Forest satellite map
林地生长数据 Forest Growth Data
2018年，MTP项目与内蒙古通辽市科尔沁左翼后旗林业局合作，在3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、黄菠萝、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部分小叶锦鸡儿。
In 2018, cooperating with the Forestry Bureau in Keerqinzuoyihou Qi, Tongliao, MTP contributed to the ecological restoration in three plots of 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. Maples were planted as the windbreak. While caragana were planted in some part of the desertified areas.
图2. 2018年三块林地的保存率变化
Image 2. Changes of the survival rates of 2018 three forest plots
2018年林地初始立地条件较差，表现为裸沙面积大、微地形起伏显著。但因后期维护形成道路，通行相对便利，使部分区域栽植与抚育作业难度降低，初植密度控制及后续抚育措施得以高质量实施，最终促成三块林地保存率保持相对稳定水平。因三块林地情况趋于稳定，调查方法由系统抽样观测优化为典型样点监测，致使保存率出现可控范围内的小幅波动，但仍维持在科学合理的阈值区间。
The initial conditions of the three forest plots planted in 2018 were poor, characterized by extensive bare sand and significant topographical relief. However, the subsequent development of access roads improved transport convenience, which reduced the operational difficulty of planting and nurturing in certain areas. This allowed for high-quality implementation of initial density control and follow-up nurturing measures, ultimately maintaining the survival rates of the three forest plots at a relatively stable level. As the condition of these plots has stabilized, the survey methodology was optimized from systematic sampling to representative sample site monitoring. This transition has led to minor, controlled fluctuations in survival rates, which still remain within a scientifically sound threshold range.
该年林地采用容器苗栽植模式，初始造林密度设定较低。虽樟子松生长速率显著低于速生杨，但基于树高、胸径、地径三项关键指标的持续监测数据，各维度生长量增幅均达显著水平。
The 2018 forest utilized a container seedling planting model with a low initial afforestation density. Although the growth rate of pines is significantly lower than that of fast-growing poplars, continuous monitoring data for three key indicators—tree height, diameter at beast height (DBH), and basal diameter—demonstrate that the growth increments across all dimensions have reached significant levels.
图3. 2018年林地树高均值变化对比
Image 3. Changes of average tree height of 2018 Forest in seven years
从2018年到2025年，林地树高均值逐年递增，显示为线性或轻微指数增长。2018年初始值较低，到2025年显著提升，年均增长率估计在5-10%（基于典型樟子松生长速率）。和樟子松栽植5-8年后开始快速生长的经验规律吻合。
From 2018 to 2025, the average tree height increased year by year, exhibiting a linear or slight exponential growth. Starting from a low initial value in 2018, the height rose significantly by 2025, with an estimated average annual growth rate of 5–10% (based on typical pines growth rates). This trend is consistent with the empirical rule that pines will enter a period of rapid growth 5 to 8 years after planting.
图4. 2018年林地胸径均值变化对比
Image 4. Changes of average diameter at breast height of 2018 Forest in seven years
三块林地的平均胸径在观测期内均呈现出持续增长的态势，说明在这段时间内，三块林地树木的生长状况整体良好，树木在不断地生长发育，胸径逐渐增大 。
During the observation period, the average DBH of all three forest plots exhibited a continuous upward trend, indicating that the overall growth condition of the trees is robust, with steady development and expanding diameters.
总的来看，三块林地监测数据显示，胸径与树高生长曲线于2020年进入速生拐点（胸径年均增幅＞0.9cm，树高增幅同步显著提升）。至今持续5年的速生阶段使林地生态修复功能大幅增强，当前抚育重点已转向防火与人为破坏防控。2018-3林地具体生长数据如下：
Collectively, data shows that both DBH and tree height growth curves reached an inflection point of rapid growth in 2020 (with the average annual DBH increment exceeding 0.9 cm and tree height increasing significantly in tandem). This five-year sustained rapid growth phase has substantially enhanced the ecological restoration functions of the forest. Consequently, the focus of current nurturing has shifted toward fire prevention and the control of anthropogenic damage. The growth data of Plot 2018-3 is presented below:
图5. 2018-3林地生长数据
Image 5. The growth data of Plot 2018-3
林地情况说明 Forest Description
该林地具有面积优势与平坦地形特征，虽存在少量玉米间种现象，但对林木生长的干扰程度较低；整体林分呈现生长均衡性，植被郁闭度维持在较高水平，生态结构稳定。
The Plot 2018-3 is characterized by its large scale and flat topography. Although minor maize intercropping exists, its interference with tree growth remains low. The overall stand shows uniform growth, with vegetation closure maintained at a high level and a stable ecological structure.
图6. 2018-3地航拍图，2025.10.31
Image 6. The aerial photo of Plot 2018-3, October 31, 2025
林地赞助商列表 Forest Sponsor List
