论文部分内容阅读
以祁连山区天涝池流域的青海云杉为研究对象,使用数码相机对林冠进行拍照,获取林分结构在不同太阳位置下的数码照片,利用图像处理方法估算不同图像的空隙度.研究结果表明林下某一固定位置的空隙度随着太阳位置的变化有较大的时间变异.提供了一种将太阳位置因素考虑到空隙度测定中的方法,为生态水文模型的研究提供高精度参数.
Taking Qinghai spruce in Tianlulogui watershed of Qilian Mountains as the research object, the canopy was photographed with a digital camera to obtain the digital photos of the stand structure in different sun positions, and the image processing method was used to estimate the porosity of different images.The results show that The porosity of a fixed position under the forest has a large time variation with the change of the solar position, and provides a method of taking the solar position into consideration in the determination of the porosity and provides high-precision parameters for the study of the eco-hydrological model.