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。其中，穿插了部分柳树、黄菠萝等。
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
2017-1林地立地条件较差，但林地整体呈狭长状，沿道路东西向，栽植和抚育的难度较低。经调查核算，2024年度总体保存率78.13%。该林地各树种保存率变化如下图，可以看到樟子松的保存率有所提升，五角枫的保存率再次下降，整个林地的保存率小幅度上升，基本维持在70%以上。
The condition of the 2017-1 plot is poor, but the shape of the site is long and narrow, running along the road from east to west, so it’s relatively easy to plant and maintain trees. The overall survival rate in 2024 was 78.13%, and the survival rates of each tree species are shown in the below chart. It shows that the survival rate of pines was increasing, and the survival rate of maples dropped again. The overall survival rate of the forest site increased a bit and maintained over 70%.
图3. 历年各树种保存率对比
Image 3. Survival rates of each tree species over years
樟子松的树高均值始终保持增长。五角枫的树高变化不大，这主要是由于该林地内五角枫保存情况始终不佳，频繁补植，大部分五角枫苗木依旧是初植期苗木，树高数值偏低。
The pines were growing consistently in height. But there was little change in tree height of maples because its consistently poor survival needed frequent replanting, and the fact was that most maple seedlings remained at low tree height values in the initial planting stage.
图4. 樟子松与五角枫树高均值变化对比
Image 4. Comparison of average tree height of pine and maple
樟子松的地径、胸径均值的增幅显著提高，同时高于1.3米的樟子松的比例也超过80%，处于快速生长期。五角枫的地径数值逐渐上升，但均值依旧偏小。这主要是由于五角枫的保存情况较差，频繁补植较小的苗木，导致五角枫的各项数据都偏低，其生长情况依旧不稳定。
There was significant increase in the average basal diameter and diameter at breast height(DBH) of pines. And the percentage of pines above 1.3 meters was above 80%, meaning that it was in the fast-growing period. The basal diameter of maples gradually increased, but the mean value remained small. This was mainly due to the poor survival of maples and frequent replanting of smaller seedlings, resulting in low values for maple, whose growth remained unstable.
图5. 樟子松地径均值变化
Image 5. Changes of average basal diameter of pines
图6. 五角枫地径均值变化
Image 6. Changes of average basal diameter of maples
樟子松的生长情况良好，内部植被覆盖度极高，树行清晰。
The pines were growing strong, and the vegetation coverage in the site was very high. The tree lines were very clear.
图7. 林地航拍图，2024.7.11
Image 7. The aerial photo, July 11, 2024
图8. 林地航拍图，2024.7.11
Image 8. The aerial photo, July 11, 2024
靠近道路部分的樟子松，由于较好的抚育条件，生长较快，情况稳定；距离道路较远的区域，由于地形较复杂，抚育条件较差，生长较慢。而五角枫的保存情况不佳。林地内有明显的放牧痕迹，对樟子松的生长已经没有影响，对五角枫的影响较大，需要继续抚育和观测。
The pines close to the road were growing faster and in a stable condition due to better nurturing conditions, while areas farther away from the road were growing slower due to more complex terrain and poorer nurturing conditions. The maple's survival was not very good. There were obvious traces of grazing in the forest, which no longer had an impact on the growth of pines, but had a greater impact on maples, which needed to continue to be nurtured and observed.
