汀江上游流域生态水文分区研究

Research on Eco-hydrological Regions of Upper Reaches of the Tingjiang River

为反映生态水文系统的相似性和差异性规律,理解人类活动对生态水文系统的干扰规律,为流域资源开发、灾害预防和生态调控提供科学依据。以汀江上游流域为例,以地形、土壤、植被、水文、水资源与人口统计资料为基础,从生态现状、水文条件、生态背景和人类活动4个方面共14个指标统计各个子流域指标的特征值。采用主成分分析和聚类分析的方法将汀江上游流域内35个子流域划分为五类生态水文分区,并对每个分区的特征指标进行分析并命名,同时基于分区结果提出了相应的生态调控措施。分区结果能够揭示汀江上游流域生态水文特征空间上的差异性和相似性以及人类活动的影响,能够指导具有不同生态水文特征的区域进行因地制宜的发展。

The similarities and differences of eco-hydrological system and the influences of anthropogenic activities on eco-hydrological system were investigated in order to provide scientific basis for resources development,disaster prevention and ecological regulation of basin.Taking the upper reach of the Tingjiang River(URTR)as the study area,based on the dataset of terrain,soils,vegetation,hydrology,water resources and population statistics,according to ecological status,hydrology condition,ecological background and anthropogenic activities of the URTR,we constructed the indicator system including 10 indexes of region alization.Using principal component analysis and cluster analysis,35sub-catchments of the URTR were assigned to 5eco-hydrological regions(EHR),the characteristics of each EHR were analyzed and corresponding ecological regulation measures were proposed.The similarities and differences as well as the influences of anthropogenic activities on the URTR were revealed by regionalization results,which could provide fundamental basis for sustainable development for different EHR.