摘要
针对目前实施的石羊河流域综合治理工程提出的蔡旗断面下泄水量目标,以石羊河流域中游凉州区为研究区域,基于GIS技术,选择土壤类型、土地利用类型、坡度和高程等因子,利用生态景观分析中的生态适宜性原理确定节水灌溉技术的适宜性分区;基于最小阻力模型,以灌区渠系为源区,利用距离函数确定节水灌溉的阻力表面特征,基于自然分类法将凉州区耕地划分为高、中、低三种强度的节水灌溉区及常规灌溉区。
Based on ecological aim in comprehensive reclamation of Shiyang River basin,which is the discharge at Caiqi cross-section,this paper studied the optimal distribution of water saving irrigation technology.According to the soil types,land use,slope and altitude,we confir^ned the suitability of water saving irrigation technologies division with ecological suitability assessment.Also we made the irrigation channel for source and conlir^ned the character of resistance surface for water saving irrigation by cost distance in GIS.Finally we divided the study area into 3 water saving irrigation areas with high,media and low intensities and conventional irrigation area.
作者
王军德
金彦兆
程玉菲
WANG Junde;JIN Yanzhao;CHENG Yufei(Gansu Research Institute of Water Conser^^ancy,Lanzhou 730000,China)
出处
《人民黄河》
CAS
北大核心
2018年第9期153-156,共4页
Yellow River
基金
国家重点研发计划项目(2016YFC0400904)
甘肃水利科研计划项目(甘水科外发2018-70)
甘肃省国际科技合作计划项目(17YF1WA154)
甘肃省水资源费项目(甘水科发2016-06)
关键词
节水灌溉技术
生态目标
生态适宜性
最小累计阻力模型
空间布局
石羊河流域
water saving irrigation technology
ecological target
ecological suitability
least accumulative cost model
spatial distribution
Shiyang River basin
