Study on Mass Survey and Value Evaluation of Land-vegetation''s Primary Productivity in Qinba Mountains in Shaanxi Province
陕西秦巴山区植被第一性生产物质量与价值量测评研究

The biosphere and land vegetations are the material foundation in which human being subsist and develop, and which provide the production of the direct valued resources, such as the food, medicinal materials, original material. Therefore, It is vital sense that the research, mass survey and value evaluation of land vegetation's NPP , can more deeply learn the ecological process and ecological function of the ecosystem. The research of the former kind was much from the nature ecology angle, concerned pro...