[关键词]
[摘要]
系统分析灌溉管理信息需求、采集现状及遥感技术应用现状。以河套灌区为实例, 开展遥感技术在河套灌区 灌溉管理系统中的应用研究。应用研究包括: 采用支持向量机分类方法提取渠系; 基于多时相遥感影像, 采用支持 向量机分类方法, 进行农作物种植结构识别; 基于灌溉前后修正的垂直干旱指数变化规律, 结合地面少量调查点, 提 取实际灌溉面积, 进而实现灌溉进度监测。结果显示遥感技术可有效弥补灌区管理传统信息获取手段的不足, 因此 在大型灌区高效灌溉管理中有较好的应用前景。
[Key word]
[Abstract]
Compared with t he tr aditional approaches of dat a collectio n, the techno lo gy of remo te sensing is an effectiv e too l to ob2 tain data in a quick, compr ehensive, real2t ime, and o bject ive fashion. In this paper, the irr igat ion manag ement info rmation re2 quirements, curr ent dat a collectio n status, and applicatio n of r emote sensing techno log y w ere analyzed. The remote sensing tech2 nolog y w as applied in the applicatio n of ir rig atio n management system of Hetao Ir rigatio n Distr ict. The applicatio ns included: ca2 nal data ex traction using the suppor t v ect or machines classificat ion metho ds; cr op str ucture identificatio n using the suppo rt vec2 to r machines classification methods based o n the multi2tempora l r emote sensing images; data ex tr act ion of actual irrigated ar ea based on the v ariat ions of per pendicular droug ht index before and after irr igat ion and g r ound surv ey lo cat ions t o realize the mo2 nito ring of irr igat ion prog ress. T he r esults show ed that remo te sensing can cover the shor tage of the traditio na l approaches of informat ion collectio n. Therefor e, application of remot e sensing in the management of lar ge ir rigation distr icts has a br oad pr os2 pect.
[中图分类号]
[基金项目]
5国家中长期科学和技术发展规划纲要6的十六大专项之一/ 高分辨率对地观测系统重大项目0 水利业务应用信息服务系统先期 攻关2水资源监测评价与管理( E030421112) ; / 十二五0 国家科技支撑计划课题/ 基于物联网的流域信息获取技术研究0 (2013BAB05B01)