西天山野果林冰雪灾害后林木受损的生态学评估

Storm damage in the wild fruit forest of the western Tianshan mountains in Xinjiang based on ecological assessment

为后期新疆西天山野果林的恢复、保护提供理论依据,采用样方样带法、生物统计分析法等,对2016年底野果林遭受冰雪灾害的损毁情况从植物生态学的角度进行调查分析。结果表明:胸径为Ⅰ级的林木受损比例最小,Ⅳ及Ⅶ级的林木受损比例最大;不同树种抵御冰雪灾害的能力存在差异,新疆野苹果抵御冰雪灾害的能力相对较强,而野杏及野生樱桃李抵御冰雪灾害的能力较弱;群落的生物多样性与其抵御冰雪灾害的能力有关。其中,群落物种最丰富的样地,其受损比例最大,且受损类型更为多样;林木的受损比例随着海拔升高呈现逐步降低的趋势。

It provides a theoretical basis for the restoration and protection of the wild fruit trees in the Western Tianshan Mountains in Xinjiang in the later period. The sample-transect method and bio-statistical analysis method were used to investigate the damage of snow-covered wild fruit forests at the end of 2016 from the perspective of plant ecology. The preliminary results showed that the proportion of forests damage at DBH grade I was the smallest, grade IV and VII were the largest. The ability of different tree species to resist the snow disaster was different, Malus sieversii has a relatively strong capability of resisting the snow disaster, while the ability ofArmeniaca vulgaris and Prunus sogdiana were weak. The biological diversity of the community is associated with its ability of withstand snow and ice disasters. The community with the most abundant species suffered the most damage, also with more diversified types of damage. The proportion of damaged trees decreased gradually with the elevation.