黄土丘陵区生态修复地不同抗侵蚀植物的消长变化过程

Changes of Erosion-resistant Species in Land Restoration Process in the Hilly-gullied Loess Plateau

依据黄土丘陵区生态修复过程中植被演替阶段与植物生长型,将抗侵蚀植物分为一年生草本植物,多年生根茎禾草植物,多年生根蘖性草本和半灌木植物、灌木植物和乔木植物5类。一年生草本植物、多年生根茎禾草植物适应土壤侵蚀环境的能力比较强,同时具有一定程度的防止土壤侵蚀的作用;灌木和乔木植物适应土壤侵蚀环境的能力比较弱,而防止土壤侵蚀的作用很强;多年生草本和半灌木植物适应土壤侵蚀环境的能力适中,而防止土壤侵蚀作用的能力优于一年生草本和多年生根茎禾草群落,但不及乔灌木群落。并提出了在天然草本植被恢复的基础上进行人工造林的相关建议。

According to vegetation succession stage and plant growth form in the ecological restoration process in the hilly-gullied Loess Plateau, erosion-resistant species may be divided into annual herb plant, perennial rhizome grass plant, perennial root-shoot herb and subshrub plant, shrub plant, and arbor plant. The changes of the erosion-resistant species in the ecological restoration process show that annual herb plant and perennial rhizome grass plant have higher ability to adapt soil erosion environment and a certain extent of effect to prevent soil erosion, while shrub plant and arbor plant have weaker ability to adapt soil erosion envi- ronment but very strong effect to prevent soil erosion. The ability of perennial root-shoot herb and subshrub plant to adapt soil erosion environment is in the middle, with their ability to prevent soil erosion is superior to annual herb and perennial rhizome grass plant, but inferior to shrub and arbor plant. The recommenda- tions on the practice of afforestation based on the restoration of natural herb vegetation are put forwarded.