基于GEE的黄河滩区水土时空动态研究

Spatial-Temporal Dynamic of Water and Land in the Yellow River Beach Area Based on Google Earth Engine

为了明晰黄河滩区水土分布动态,充分优化管控滩区国土资源,基于Google Earth Engine(GEE)平台,利用水体与植被指数之间的关系,提取1987—2018年黄河滩区水体数量,研究滩区水土时空动态变化。结果表明:黄河滩区水土资源年际变化情况不同,滩涂地面积和永久性水体面积呈增大趋势,而季节性水体面积呈减小趋势;不同地级市滩区面积分布不同;长年无水滩区在南北岸分布不均衡,北岸面积大于南岸面积,其中原阳县的面积最大,最大的地块分布在邹平市与章丘区交界处。

In order to clarify the dynamic of water and soil distribution in the Yellow River beach area and optimize the management of land resources in the beach area, based on Google Earth Engine(GEE) platform and using the relationship between water body index and vegetation index, this paper extracted the number of water bodies in the Yellow River beach area from 1987 to 2018 to study the temporal-spatial dynamic changes of water and soil in the beach area. The results show that the interannual variation characteristics of water and land resources in the study area are different;the tidal flat land and permanent water area increase while the seasonal water area decrease during the study period;the area distribution of the Yellow River beach area in different prefecture-level cities is different;the areas of perennial waterless areas unevenly distributed between the north and south, and the area of in north bank is larger than that of the south bank, of which Yuanyang County has the largest area, and the largest land plot is located at the junction region between Zouping City and Zhangqiu District.