生态足迹分析应用于区域可持续发展生态评估的缺陷 Biological Diversity,Land Degradation and Sustainable Rural Livelihoods Promoting Innovations for Sustainable - Biodiversity Management in Agricultural Systems Sustainable Utilization and Economic Development of Some Plant Resources in Northern Pakistan Framework for Sustainable Use of Medicinal Plants in China Constraints and Opportunities for Sustainable Livelihoods and Cash Income Generat 贵州药用植物资源的调查和开发利用研究(续完)