摘要
本文从地震对震区生态系统的破坏和退化出发,探讨了不同生态系统重建中植被恢复的技术和做法。大地震及其诱发的次生灾害毁坏了植被生存的土壤环境,致使土壤遭受重金属、有机物以及核辐射的污染,而植被可以修复退化的土壤生态系统。对于森林、草地、江河等自然生态系统,植被选择应以原生种类为主,以促进生态系统进行原生演替;而农田、城市绿地生态系统,植被恢复应以生产生活、景观营造、生物修复为目的,宜选择当地主要优势农作物、观赏性好、抗污染的植物,以控制生态系统次生演替的方向和速度。在各类生态系统重建中,应防止外来有害物种的入侵。
Based on the destroyed and degraded ecosystem by the powerful earthquake in seismic areas, vegetation restoration was discussed in reconstruction of different ecosystems. If the magnitude earthquake and its induced disaster had ruined the soil ecosystem of plant＇ s growth, resulting in pollution of heavy metals, organic substances and nuclear radiation, plants could be used to restore the degraded soil ecosystem. For forest, grassland and river ecosystems, phreatophyte should be applied to, promoting the primary succession of the ecosystem. For farm and urban ecosystems, the main crops and pollution-resisting ornamental plants should be selected for the purpose of agricultural production, landscapes construction and bioremediation so as to control the speed and direction of secondary succession of these ecosystems. During the reconstruction of various ecosystems, invasive alien species should be prevented.
出处
《防灾科技学院学报》
2009年第3期9-13,共5页
Journal of Institute of Disaster Prevention
基金
上海师范大学资助项目(SK200901)
关键词
地震
生态系统重建
植被
earthquake
reconstruction of ecosystem
vegetation
