林地基本信息 Basic info
位置 Location: 科尔沁左翼后旗甘旗卡镇 Ganqika Town, Horqin Zuoyi Houqi
面积 Area：1363亩 / 90.9 hectares
树种 Species：杨树、榆树、五角枫、小叶锦鸡儿
Poplars, Acer mono (maples), Elms and Caragana microphylla Lam
图 1. 2023-1林轮廓图
Image 1. Plot 2023-1 skeleton map
林地生长数据 Forest Growth Data
2023年，MTP项目与内蒙古通辽市科尔沁左翼后旗农户合作，在1块沙荒地和1块农田进行了生态修复，造林树种包括杨树、五角枫、榆树、小叶锦鸡儿等，其中以杨树为主，沙化严重的区域以榆树和五角枫为主，部分严重沙化区域栽植了小叶锦鸡儿。
In 2023, cooperating with the local farmer in Horqin Zuoyi Houqi, Tongliao, MTP contributed to the ecological restoration in a sandy land plot and a farmland plot by planting a mix of poplars, Acer mono (maples), elms and Caragana microphylla Lam. The main species was poplars, maples, elms and Caragana microphylla were planted in the areas with severe desertification.
图2. 2023年栽植2块林保存率对比变化
Image 2. Inter-annual variability of the survival rates in two forest plots
2023-1 地块： 立地条件较差（地势起伏大、裸沙面积广），加之存在放牧影响，导致 2023年度苗木成活情况不佳。2024年实施大面积补植后，保存率得到显著提升。2025年针对缺损区域重点补植了灌木，有效维持了当前较高的保存水平。
Plot 2023-1: Poor site conditions (uneven terrain, large areas of bare sand), combined with grazing pressure, led to unsatisfactory seedling survival in 2023. Following large-scale replanting in 2024, the survival rate increased significantly. In 2025, targeted shrub planting was implemented in vacant areas, effectively maintaining the current high level of survival.
2023-2地块：原为农田，造林条件相对优越且邻近村庄，不过虽然同样存在放牧问题。2023年度成活率偏低，2024年经过全面补植，保存率同样呈现显著提升。然而，2025年放牧活动加剧，对苗木造成较大影响，导致保存率出现明显下降。
Plot 2023-2: Formerly farmlandand and located near a village, this site offered superior afforestation conditions but still with the grazing problem. The survival rate in 2023 was relatively low. Although comprehensive replanting in 2024 led to a significant increase in the survival rate, intensified grazing activities in 2025 had severely impacted the seedlings, resulting in a marked decline in survival.
总体而言，2023-1地块整体保存率较高，但需加强灌木抚育以维持成效；2023-2地块则需实施大面积补植，以提升保存率。
Overall, Plot 2023-1 maintains a high survival rate, yet nurturing for shrubs must be strengthened to sustain these results; in contrast, Plot 2023-2 requires large-scale replanting to improve its survival rate.
图3. 2023-1林地生长数据
Image 3. The forest growth data of Plot 2023-1
2023-1地块栽植了杨树、榆树、五角枫、小叶锦鸡儿等治沙树种。经持续补植，灌木（如五角枫）与杨树的保存率均维持在高位。
Plot 2023-1 was planted with sand-fixing species, including poplars, elms, maples, and Caragana microphylla. Through continuous replanting, the survival rates of both shrubs (such as maples) and poplars has been maintained at high levels.
图4. 各树种保存率对比
Image 4. Comparison of survival rates of various tree species
该年林地是采用的是高密度模式栽植，杨树为1-2年生裸根苗，五角枫、榆树等为1年生容器苗，苗木均偏小。各树种的生长速率差异显著。杨树理论生长速率最高，2023-1地块的实测数据吻合该特征，其杨树正处于速生期；而五角枫和榆树生长相对缓慢。相比之下，2023-2地块补植后的杨树长势明显偏弱。
The forest planted in 2023 was established using a high-density planting model. The poplars consisted of 1-2 year old bare-root seedlings, while species such as maples and elms were 1-year-old container seedlings; overall, the seedlings were relatively small. There were significant variations in growth rates among the species. Theoretically, poplar has the highest growth rate, a characteristic consistent with the field data from Plot 2023-1, where the poplars are in their rapid growth stage. In contrast, the maples and elms are growing relatively slowly. Compa ratively, the poplars replanted in Plot 2023-2 showed significantly weaker growth.
图5. 两块林地中各树种平均树高对比
Image 5. Comparison of average tree height of various tree species in two forest plots
实测地径数据与树高变化趋势一致：2023-1地块增幅显著，2023-2地块则出现数值下降。
The measured basal diameter data showed a consistent trend with the tree height: the increase was significant in plot 2023-1, while the value decreased in plot 2023-2.
图6. 两块林地中各树种平均树高对比
Image 6. Comparison of average basal diameter of various tree species in two forest plots
林地情况说明 Forest Description
2023-1林地主体造林以杨树和榆树为主，辅以五角枫，并在坡度较大区域栽植小叶锦鸡儿以固沙；由于小叶锦鸡儿造林密度较低且分布分散，调查主要聚焦于杨树和榆树的生长状况。相较于2024年，全年降雨充沛且周期长，但高温天数显著增加，此气候对杨树生长较为有利，却加剧了裸沙区域灌木（如小叶锦鸡儿）的根茎烫伤风险，导致死亡率上升；为此，林地在春季实施了针对性补植，有效维持了裸沙区灌木的留存率。后续需要保持对灌木的观察，以及补植等相关抚育工作。
The main afforestation species in Plot 2023-1 consist of poplars and elms, supplemented by maples, with Caragana planted on steeper slopes. Since the Caragana was planted at a lower density and was scattered across the plot, the survey focused on the growth of poplars and elms. Compared to 2024, the year featured abundant and prolonged rainfall but a significant increase in high-temperature days. While these conditions favored the growth of poplar, they increased the risk of stem-base scorching for shrubs (such as Caragana) in exposed sandy areas, leading to higher mortality. Consequently, targeted replanting was implemented in the spring, effectively maintaining the retention rate of shrubs in these areas. Continued observation of shrubs and related nurturing tasks, such as replanting, remain necessary.
图7. 2023-1林地杨树树行航拍图，2025.10.22
Image 7. Aerial photo of poplar tree rows in Plot 2023-1, October 22, 2025
图8.五角枫（左）和榆树（右），2025.10.22
Image 8. Maples (left) and elms (right), October 22, 2025
林地赞助商列表 Forest Sponsor List
