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林地生长数据 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,2016-2林地相对平整,灌溉条件较好。2018年,杨树和榆树的平均树高、地径等数值都发生了不同程度的上升,杨树表现的更明显。在成活率基本持平的情况下,杨树树高达到1.3米的比例在下降,榆树的在回升。这说明,相对瘦弱的杨树苗木发生死亡,数据较好的苗木存活了下来,所以导致平均数据的上升。而榆树发生了相对较好的补植,由于补植的苗木普遍高于1.3米,提升了均值。

Cooperating with the Forestry Bureau in Keerqinzuoyihou Qi, Tongliao, MTP contributed to the ecological restoration of 2 sandy plots in 2016. The plot 2016-2 was flat with great irrigation condition. In 2018, the average height, basal diameter and other features have all increased in various degrees, especially those of poplars. The survival rate maintains basically the same as year 2017.The proportion of the poplars which reach 1.3m high has decreased, while the proportion of the elms of such height has increased. This implies that the relatively thin poplar seedlings have died and some well-grown seedlings survived. This explains the rising average values of all features. There have been carried out plenty of replanting for elms. Because the height of replanted seedlings is generally over 1.3m, the average values of height has thus increased.

林地情况说明 Forest Description

该林地于2016年4月完成初植,密度为55棵/亩,种植树种为杨树2年生以上苗木。苗高均大于1.5米。林业局相关机构负责抚育以及死亡苗木的补植。林地的立地条件相对松树地块较差,裸沙程度较重,地势起伏也较多,林业局及相关造林单位在沙化最严重的部分区域实施了2*2米大草方格固沙措施。

The first around of planting is plot was compeleted in April 2016 with the density of 825 trees per hectare. Samplings planted were mostly two years old and the average height was over 1.5 meters. The forestry bureau is taking care of the maintenance and replanting. The soil condition was not as good as plot 2016-1, with more bare sand and up-and-downs. The forest bureau paved two meters by two meters straw grids to fix the sand in the most desertified area.

整体上看,存活的杨树和榆树生长的情况相对茂盛,没有明显的损伤。林地差异化、两极化的趋势主要体现在区域差异上,裸沙区域的生长情况良好,其它区域则相对弱势,生长情况不佳。

Generally speaking, the survived poplars and elms are in good condition and there is no obvious damage.The trend of differentiation and polarization is mainly reflected in regional differences. The growth of trees in bare sand areas is good, while those in other areas are relatively weak and the growth is not so good.