林地生长数据 Forest Growth Data
图1. 林地生长数据
Image 1. Forest Growth Data
2016年，MTP项目与内蒙古通辽市科尔沁左翼后旗林业局合作，在2个沙荒地进行了生态修复，造林树种包括杂交杨树、榆树和樟子松。杨树个体间差异化开始显现，大部分杨树生长速度较快，胸径和地径均值变化显著，但有相当比例的苗木个体树高未达1.3米；榆树的生长情况不稳定，各项指标均出现一定程度的下降，这也表面，榆树进行了一定程度的补植，但补植的苗木相对较小，使得不连续数据进入样本造成测量误差。
Cooperating with the Forestry Bureau in Keerqinzuoyihou Qi, Tongliao, MTP contributed to the ecological restoration of 2 sandy land plots in 2016, including scotch pines, poplars and elms. The polarization of poplars is becoming obvious, most poplars grow in a fast pace, with ostensible change in diameter at breast height and ground diameter. However, there are a number of tree seedlings cannot reach 1.3M; The growth condition of elms are unstable, reflecting by the decline in all range of growth data, this also means that replanting has been carried out, in this case, some small seedlings were inevitably counted into samples, resulting in the measurement error. 从实际的成活率看，2016-2的保存率维持在60%以上，2019年上升至69%。 From the point of survival rate, the survival rate of the plot is above 60%. This year, it slightly increases to 69% probably due to replanting.林地情况说明 Forest Description
图2. 杨树树行（2019年5月8日）
Image 2. A row of poplar, May 8th. 2019
图3. 榆树（2019年5月8日）
Image 3. Elms, May 8th. 2019
图4. 林地补植情况（2019年5月8日）
Image 4. Plot replanting, May 8th. 2019
