傅抱璞(1981)公式中流域参数的量化方法体系研究

同样的植被变化对产水量影响差异巨大，这是至今全球大量观测的基本结论，也是近200年来“森林与水”关系争论的关键依据。申请者前期基于傅抱璞理论开始的“自上而下”的研究证明，不同流域在流域参数m上的差异是导致观测结果巨大差异的重要原因，而量化流域参数m与流域特征变量之间的关系成为理论分析和实际观测结果联系的纽带。本项目通过紧密联系的3个研究内容试图探索流域参数m的量化方法体系，这3个研究内容是：(1) 由流域特征变量(如：流域面积、流域地形、土壤深度与渗透性、地表覆盖等) 到流域持水容量的计算方法；(2) 由流域持水容量到傅抱璞公式中流域参数m值的算法体系；(3) 计算方法与算法体系的检验。通过本项目的研究，将彻底平息过去200年来有关“森林与水”关系的争论，在全球、至少在中国境内，我们预先可以在地形图上量化任一流域的植被恢复对产水量的影响值，作为兼顾水资源可持续性的植被恢复技术的理论基础。

The impacts of the same vegetation change on water yield varies greatly, which is the basic conclusion of a large number of global observations so far, and also the foundation for the scientific debates of "forest and water" in the past 200 years. The applicant’s "top-down" researches based on Fu Baopu's theoretical framework in the early stage proved that the difference in watershed parameter (m) is a driving force for the huge difference of observation results. To quantify the relationship between watershed parameter (m) and watershed characteristic variables is the link between theoretical analysis and observation results. This project tries to explore the methodology of quantifying watershed parameter (m) through the three tightly interlinked research contents. The three research contents are：(1) The calculation method from the watershed characteristic variables (watershed area, watershed topography, soil depth and permeability, surface coverage, etc.) to the watershed water retention capacity (WRC); (2) The algorithm system from WRC to the watershed parameter (m) of Fu Baopu formula; (3) The verification of methodology and algorithm system. Through the research of this project, it can be expected that the debate on "forest and water" relationship in the past 200 years could be completely settled. In the world, at least in China, we can quantify, in advance, the impact of vegetation restoration on water yield in any watershed on the topographic map, which serves as the theoretical basis of vegetation restoration technology that takes into account of the sustainability of water resources.