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요약정보
基于遥感影像的灌区耗水量及计算分析
Resource Type
Academic Journal
Authors
董江伟
;
李江
Source
水利规划与设计 / Water Resources Planning and Design
. (1):44-47
Subject
遥感影像
耗水量
农业灌溉
Landsat8
彭曼公式
灌溉面积
Language
Chinese
ISSN
1672-2469
Online Access
Find it @ DONGA
초록
准确监测灌溉用水、灌溉面积等信息是灌区管理的基础,基于遥感监测和彭曼公式联合计算法,以新疆孔雀河灌区为研究区,利用Landsat8 中尺度遥感分辨率(30cm)影像解译出灌区主要农作物棉花和香梨实际种植面积及不同生育期内作物的覆盖度,获取了孔雀河灌区代表性作物的耗水量空间分布和生育期的耗水量.结果表明:利用遥感影像提取的灌溉面积与实际灌溉面积进行对比,精度达到 99.33%;获取灌区耗水定额与主要作物生育期灌溉制度进行对比,精度达到 97.8%.两种精度验证结果表明:利用遥感影像技术解决了目前灌区农业灌溉用水计量监测能力薄弱、统计数据不真实的问题,为加强灌区农业用水管理提供技术支撑.
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