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Question

传统的植被观测方法是以野外观测为基础的，主要用眼睛观察，用手记录，不需要仪器设备，简单易行，随地可做，但需耗费大量人力和物力，而且受时间所限，周期短，覆盖面小，主观性太强。植被覆盖度是衡量矿区地表植被覆盖的一个最重要的指标，在矿区土地沙漠化评价模型中都将植被覆盖度作为重要输入参数。随着遥感技术和电子计算机的飞速发展，使得遥感数据拥有监测地区，甚至全球尺度植被变化的显著潜力，原来由于地形、交通等制约而无法达到的地区，也可以通过遥感观测手段对该地区植被进行动态监测。本文对植被遥感监测技术加以阐述，旨在为草原保护提供依据。

Answer 1

Conventional vegetation observation method in field observation based, mainly with the eye, hand records, without the need for equipment, simple, or can be, but need to consume a great deal of manpower and material resources, but also by the time limit, cycle is short, small coverage, the subjectivity is too strong. Vegetation coverage is a measure of mining area vegetation is one of the most important indices in mining area, land desertification assessment model will vegetation coverage is an important input parameters. As the remote sensing technology and the rapid development of the computer, the remote sensing data with monitoring area, or even global scale vegetation change significant potential, originally because of the terrain, traffic is restricted to reach areas, also by means of the remote sensing vegetation dynamic monitoring. This paper elaborates on vegetation remote sensing monitoring technology, aims to provide basis for grassland protection.