基于不同下垫面的农业干旱遥感监测方法与发展前景

发布时间：2018-04-22 12:04

本文选题：农业干旱 + 下垫面　；参考：《草业科学》2017年12期

【摘要】：干旱是我国农业面临的主要自然灾害之一。利用遥感手段监测农业干旱,针对作物生长发育过程中不同下垫面状况选取适用的监测指标,可以及时、有效地评估干旱对作物生长的影响,从而为各级政府部门制定防灾减灾政策提供重要的依据。本文总结了目前广泛应用的基于不同下垫面状况的农业干旱遥感监测方法,并将这些方法分为适用于裸露地表与低植被覆盖条件的监测方法、适用于中高植被覆盖条件的监测方法及适用于各种下垫面状况的综合监测方法。在此基础上,对未来农业干旱遥感监测发展方向进行了研究与探讨:1)监测数据源由单一数据源向多源数据转变;2)监测指标由单一的气象监测指标向气象、卫星遥感与作物生理物理特征相结合的综合监测指标转变;3)逐步实现"3S"技术集成与数据共享。
[Abstract]:Drought is one of the main natural disasters faced by agriculture in China. The effects of drought on crop growth can be evaluated in a timely and effective manner by using remote sensing to monitor agricultural drought and to select suitable monitoring indicators for different underlying surface conditions during crop growth and development. Therefore, it provides an important basis for government departments at all levels to formulate disaster prevention and mitigation policies. In this paper, the widely used remote sensing monitoring methods for agricultural drought based on different underlying surface conditions are summarized, and these methods are divided into monitoring methods suitable for bare surface and low vegetation cover conditions. It is suitable for monitoring the condition of vegetation cover and the comprehensive monitoring method for the condition of various underlying surfaces. On this basis, the development direction of remote sensing monitoring of agricultural drought in the future is studied and discussed. (1) the monitoring data source changes from single data source to multi-source data, and the monitoring index changes from a single meteorological monitoring index to a meteorological one. The "3s" technology integration and data sharing are realized step by step by the integrated monitoring index transformation of satellite remote sensing and crop physiophysical characteristics.
【作者单位】：兰州大学资源环境学院西部环境教育部重点实验室;
【基金】：国家自然科学基金项目(41401472、41571016) 高分辨率对地观测系统重大专项(30-Y20A34-9010-15/17)
【分类号】：S127;S423

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