Green volunteers plant shrubs during a campaign in the tai po waterfront park in september 2003 绿化义工参加2003年9月在大埔海滨公园举行的植树活动。
2.
Based on the principles of restoration ecology and main aim of karst vegetation restoration at present , take huajiang canyon with a typical degraded vegetation area located in southwest guizhou as an example , we study bio - ecological features of the volunteer plants with some economic values and the soil environment , for the purpose of making some models of the pioneer plants to popularize 根据恢复生态学原理和喀斯特区植被恢复的目标，以位于贵州省西南部的典型喀斯特植被退化区花江峡谷为例，通过研究该区具一定经济价值和推广价值的先锋植物的生物生态学特征和土壤环境，研究适于推广应用的先锋植物群落模式。
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