林地基本信息 Basic info
位置 Location： 科尔沁后旗巴胡塔苏木召根嘎查 Zhaogen Gacha, Bahuta Sumu,Keerqinhouqi
面积 Area：1134亩/76.26 hectares
树种 Species：杨树 Poplar
图 1. 2014-2林地卫星图
Image 1. Forest satellite map of Plot 2014-2
2014年度，MTP项目与内蒙古通辽市巴胡塔苏木的召根嘎查和边界嘎查合作，以杂交杨树为主，辅以封育措施对两个村的3块沙荒地进行了生态修复。
Hybrid poplars were planted on three sandy plots, in cooperation with Zhaogen Gacha (village) and Bianjie Gacha in Bahuta Sumu in 2014. The afforestation and enclosure work took place on the three sandy lands of two villages to restore the degraded land.
图2. 2014-2林地生长数据
Image 2. The growth data of Plot 2014-2
经调查核算，项目共造林3860亩，杨树343540棵，围栏约20200米，在2024年度，三块林地地整体存活率为68%。其中，2014-2的保存率为62%，其保存率年际变化及其与另外两块林地的对比如下图。当前林地保存率呈现显著波动，鉴于林地内未出现大规模林木死亡或人工补植的情况，结合林木生长状况存在显著空间异质性的特征，其核心影响因素可归结为不同采样区域对保存率统计数据的差异化影响。
According to the forest survey, the total afforestation area of the project is 257.33 hectares, with 343,540 poplar trees and 20,200 meters of fences. The overall survival rate of three forest plots was 66%. Among them, Plot 2014-2 was 62%. The changes in the annual survival rates and the comparison with two other plots were shown in the below chart. The survival rates of the three plots showed significant fluctuations. Given the absence of large-scale tree mortality or artificial reforestation, combined with the notable spatial heterogeneity in tree growth conditions, the core influencing factors could be attributed to the differential impact of various sampling sites on the statistical data.
图 3. 2014年三块林地的保存率对比及其年际变化
Image 3. Comparison of survival rates and their inter-annual variability in three forest plots
三块林地的树高均值变化不同，2014-1的林地状况较好，但出现了较明显的下降；2014-2的均值数据增幅显著；2014-3的均值数据变化较小。
The average tree height in the three plots showed different trends compared with last year. Plot 2014-1 was in better condition but showed a significant decrease. Plot 2014-2 increased significantly. And Plot 2014-3 showed little change.
图 4. 2014年三块林地的树高均值变化
Image 4. Changes of average tree height in three forest plots
三块林地的胸径和地径均值动态变化趋势与树高均值呈现一致性特征：
a) 2014-1地块：胸径和地径均值呈下降趋势；
b) 2014-2地块：胸径和地径均值持续上升；
c)2014-3地块：胸径和地径均值呈下降趋势。
The dynamic trends of the average diameter at breast height (DBH) and basal diameter in the three forest plots showed a consistent characteristic with the average tree height. a) Plot 2014-1: The DBH and basal diameter showed a decreasing trend; b) Plot 2014-2: The average DBH and basal diameter continued to rise; c) Plot 2014-3: The DBH and basal diameter showed a downward trend.
图 5. 2014年三块林地的地径均值变化
Image 5. Changes of average basal diameter in three forest plots
图 6. 2014年三块林地的胸径均值变化
Image 6. Changes of average DBH in three forest plots
2014-2林地整体生长状况：林地内杨树整体生长状况一般，生长异质性显著。
a) 林分结构：林分下部萌生枝条密集，灌木化特征显著；林木缺损率较高，区域间生长差异明显。
b) 放牧活动：林地内放牧干扰频繁；
c) 地形与水文：地形条件复杂，但积水现象较少；
d) 地表植被：地表植被以沙生植物为主，大面积裸地分布较少。
Overall growth status: The overall growth status of poplars in the forest was average with significant heterogeneity. a) Stand structure: Lots of undergrowth sprouting showed a clear tendency toward shrubification; the tree loss rate was high and there were obvious differences in growth between regions. b) Grazing activities: Frequent disturbances caused by grazing within the forest; c) Topography and hydrology: The topography was complex, but waterlogging was relatively rare; d) Surface vegetation: The surface vegetation was mainly composed of psammophytic plants, with relatively few large areas of bare land.
图7. 2014-2林地照片，2025.7.22
Image 7. The forest photo of Plot 2014-2, July 22, 2025
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