竹林不同界面水文效应研究

Research on hydrological effect in different interfaces under bamboo forests

森林植被层作为水文环境要素,对降水、蒸散和径流等水文通量在空间上的分布特征有着重要的影响。基于国内外近年来对竹林水文效应的研究成果,试从竹林林冠层、枯落物层、土壤层等不同层面综合评述最新研究进展,普遍的研究结论认为竹林具有涵养水源、水土保持、减少径流泥沙、改善水质等功能,目前国内外对竹林生态系统水文效应的研究还属于起步阶段,研究对象多以毛竹Phyllostachys pubescens林为主,并局限于单一指标或是单一过程的观测试验,今后竹林水文研究工作应加强不同竹种水文过程物理机制研究,对于分析评价不同种类、地带、类型的竹林水文效应具有重要意义。

As an important component in hydrological process,forest vegetation influences critically the spatial distribution of hydrological fluxes such as precipitation,evapo-transpiration,and runoff.Based on the recent research literature at home and abroad,the authors summarized the effects of bamboo forest on the spatial distribution of those hydrological fluxes,from the interfaces of crown layer,litter layer and soil layer of bamboo forest.The results indicated that the main functions of bamboo forest vegetation including protecting water resources,reserving water and soil,controlling erosion and improving water quality.However,the study of hydrological phenomena is still in the initial stage focusing mainly on Phyllostachys pubescens,and limited to single index and process.Therefore,the physical mechanisms of hydrological process should be stressed in various bamboo forest hydrology study,which was of great importance for analyzing and evaluating forest hydrology effects in different varieties,zones,and forest types.[Ch,55 ref.]