STUDY ON THE PRACTICAL TECHNIQUE OF THE PHOTOGRAPHY METHOD IN VEGETATION COVERAGE MEASUREMENT——Take the region in Da Yushu town of Beijing for example

摘要

Vegetation coverage(VC) is the most important quantitative index to measure the status of the vegetation growth, and it plays an increasingly important role in hydrology, meteorology, ecology and other aspects of regional and global issues. By far, the fundamental research of the vegetation coverage has already developed extremely maturely,yet the unceasingly pursuing for fineness in the reality survey is still being studied on some important questions, and its final output has already become the very important foundation data for scientific research. In this study, we designed the instrument independently, using the photography method with NDVI which is obtained from vegetation index in remote sensing image to unify the establishment regression model. Meanwhile, the Least Height we needed under the photography method for different vegetation had been calculated, and the ,value of the VC had been analyzed on the comparison under the angle of tilt and vertical. Thus this study can provide the theoretic and technical supports for gaining the specific region's vegetation coverage effectively.