侧柏造林对辽西干旱地区生态恢复效果评价

Evaluation of Platycladus orientalis Afforestation on Ecological Restoration in Arid Areas in Western Liaoning Province

为了对侧柏在辽西干旱地区造林后的生态恢复效果进行分析,特选择了侧柏6种不同林龄的林分与未造林的地块进行了比较,结果表明:侧柏造林后的前几年,在增加植被盖度及丰富度上效果不佳,有一定幅度的降低,随着侧柏的生长,其逐渐成为优势树种,发挥出较好的水土保持及改良土壤的效果,造林8年后随着树龄的增加,侧柏林分植被盖度、丰富度均逐渐增加,土壤的肥力水平有所提高,一定程度上改善了干旱地区土壤的盐碱度。

In order to study the ecological restoration effects of Platycladus orientalis after afforestation in the arid areas of western Liaoning Province,six different forest stands of Platycladus orientalis were selected and compared with unforested plots.Result shows that the first few years after afforestation of Platycladus orientalis,the effect of increasing vegetation coverage and abundance is not optimal,with a certain degree of decrease.With the growth of Platycladus orientalis,it gradually became a dominant tree species,exerting a better effect of soil and water conservation and soil improvement,so afforestation after eight years,with the increase of the tree age,the vegetation coverage and richness of Platycladus orientalis gradually increased,and the soil fertility level was improved,which improved the soil salinity in arid areas to a certain extent.