基于ENVI植被动态变化分析

植被覆盖度是反映地表植被覆盖状况和监测生态环境的重要指标,是用来研究区域或全球尺度水文、气象、生态等领域的基础数据,在各类相关理论和模型中得到了广泛应用。简要介绍了研究区域的行政、地质、气候和能源的概况,论述了研究内容、研究方案、技术路线、RS处理平台等,详细讨论了数据收集、数据预处理、植被指数（NDVI）提取、植被覆盖度计算、植被覆盖度分等及面积统计等研究方法,分析了统计结果和植被变化情况,并讨论了孝义市植被覆盖度,提出了发展建议。

Analysis on Vegetation Dynamics Based on ENVI

Vegetation coverage reflects an important indicator of the vegetation cover status and monitoring the ecological environment which is the basis of the data used to study regional or global scale hydrological,meteorological,ecological and other fields,has been widely used in all kinds of theories and models.In this paper,the author briefly introduced the chief of the study area,geological,climate and energy overview,and discussed the research content,research programs,technical route,RS processing platform,a detailed discussion of the data collection,data preprocessing,extract vegetation index（NDVI）,vegetation coverage calculations,the vegetation coverage grading and the area of statistics and research methods.Finally,the author analyzed the statistical results and changes in vegetation cover,and discussed the vegetation coverage in Xiaoyi City and put forward proposed development.