林地概况 Forest Basic Information
To date, MTP has successfully planted 2,621,308 trees on 39 forest plots, covering an area of 36,558.15 Mu (24.37 km2) in Inner Mongolia. In 2021, a new plot of 961 Mu was planted, marked as plot 2021-1. More details are given in the graph below. (1 Hectare=15 Mu)
Fig. 1 Planting Areas of Each Year
栽植树种 Type of Trees
To date, we’ve planted 8 types of tree species in MTP forests, including 1-year-old and 2-year-old hybrid poplar bare-root seedlings, yellow horn seedlings, maple (Acer Mono) seedlings, 3-year-old container pine tree seedlings, 2-year-old elm seedlings, 1-year-old Caragana Microphylla container seedlings, 2-year-old willow seedlings, 2-year-old Phellodendron amurense seedlings, and 3-year-old spruce seedlings. Poplars and pines made up for the majority of the trees planted, the percentages being 54% and 37% respectively, and other tree species combined less than 10%.
Fig.2 Types of trees
林地保存率 Forest Survival Rate
In October and November, MTP team conducted surveys in 21 forest sites, which were planted from 2010 to 2021. The surveys took 15 days in total, covering 172 sample sites and 5830 tree samples. The sampling ratio was 0.22%. The survey measurements included the survival rate, height, basal diameter, diameter at breast height, crown width and spacing in the rows. Based on our survey results, the overall survival rate of all MTP forests in 2021 was 74.25%.
Fig.3 Survival rates over the years
The adaptability of different tree species to sandy environment varies, and the average survival rate of most tree species is basically maintained at about 70%, which is a reasonable phenomenon. The adaptability of willows is relatively poor, with less than 60%. In 2021, the survival rates of various tree species are different, those of major tree species are shown in the following figure:
Fig.4 Survival rates of each type of trees
Fig.5 Survival rates of each plot in 2021
As shown in the figure above, the survival rate of most plots is higher than 60%, basically reaching our expectation.
Fig.6 Surveying in the plots