论文部分内容阅读
通过调查科尔沁沙地南缘阿尔乡沙地围封前后植被特征因子和分析土壤养分含量得出:围封对植被覆盖率和物种多样性均有显著影响,其中对沙丘顶部影响最大;围封后流动沙地和半流动沙地的指示植物逐渐衰退,而固定沙地的指示植物逐渐增多;围封可显著提高0～10 cm土壤养分含量,但对11～30 cm的影响不明显。
By investigating the characteristic factors of vegetation before and after enclosing the sandy land in Alkandi Sandy Land on the southern margin of Horqin Sandy Land and analyzing the content of soil nutrients, the results showed that the enclosing had a significant effect on the vegetation coverage and species diversity, with the greatest impact on the top of the sand dune; Flowering sandy land and semi-floating sandy land indicated that plants gradually declined, while those on fixed sandy land increased gradually. Envelopment increased the soil nutrient content at 0-10 cm significantly, but had no significant effect on 11-30 cm.