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泾河流域面积很广,曾一度支撑着关中平原的灌溉事业,但是历史变化很大。由于这一地区唐代之前森林草原覆盖良好,有农牧皆宜,唐王朝前期在此设置大量牧监,充分利用当地草原;中后期,在游牧民族不断入侵,边患严重的情况下,唐王朝又在此驻屯重兵,设置屯田,以确保军粮。这种土地利用方式的转变对自然生态环境产生了很大影响。本文从唐代关中地区郑、白渠灌溉面积缩小的角度研究唐代泾河的变化。用历史环境变迁的视角论证泾河的变化,得出主要是其泥沙的增多导致了唐代郑、白渠灌溉面积缩小的结论。主要是其泥沙的增多导致了唐代郑、白渠灌溉面积缩小。
The Jinghe River Basin is a very large area that used to support irrigation in the Guanzhong Plain for a time, but the history has changed greatly. Due to the good coverage of forest and grassland in the area before the Tang Dynasty in this area, there was a good agricultural and animal husbandry. In the early Tang dynasty, a large number of animal husbandry supervisors were set here to make full use of the local grassland. In the mid-late period, nomadic tribes continued to invade and the tribe was severely marginalized. Also stationed in this heavily guns, set up Tuntian, to ensure the military food. This shift in land use patterns has a significant impact on the natural environment. This paper studies the changes of Jinghe River in Tang Dynasty from the perspective of narrow irrigation area of Zheng and Baiquans in the Guanzhong area in the Tang Dynasty. The change of Jinghe River was demonstrated by the change of historical environment, and the conclusion was drawn that the increase of sediment led to the decrease of irrigated area of Zheng and Baiguan in the Tang Dynasty. Mainly due to the increase of sediment, the irrigation area of Zheng and Baiqu ditches narrowed in Tang Dynasty.