In an effort to offset carbon dioxide, Plot 2012-1,2012-2,2012-3 and 2012-4 were planted in cooperation with Liujiazi Tree Farm back in 2012. Six years after planting, the survival rate of poplar is 90% and the survival rate of pine is 80%. All the growth indexes, including basal diameter and average height are rising steadily each year. Overall speaking the growth situation for both trees are good.
The poplars' overall situation is stable and fewer branches are observed at the bottom. Pine trees grew quickly, some trees'heights are higher than 3m, a small number of trees turned yellow at the bottom.The growth of poplar and pine is very uniform. Inter-regional differentiation is not obvious.