Study on establishment of quantitative model of human activity intensity in jinghui canal irrigation area based on RS/GIS

摘要

Taking large-scale agricultural Jinghui canal irrigation area as example, the paper explores the linkage mechanism between the intensity of regional human activities and the change of hydrological ecology and geographic environment in multidimensional space, establishes eight measurable principal-factor index systems of human activities intensity on three factors including society, economy and culture based on RS/GIS technology, and further finishes the computational model of human activities intensity with remote sensing data. With this model, the paper carries out computation on data of three phases in the area, and the result shows that the value acquired with remote sensing model basically conforms to actual changing data of hydrological ecology and geographic environment during the same period within the area, which proves the validity of the model.