摘要
塘坝灌溉是当前江淮丘陵区农业灌溉的主要方式,研究江淮丘陵塘坝灌区的抗旱能力,对于促进灌区塘坝水利工程建设及农业产业结构调整具有重要的参考意义。该研究选取江淮丘陵2个典型样区,以高分辨率遥感影像图、塘坝容积、有效降雨量等数据为基础,在不同降雨频率下对研究样区的土地利用类型、水量供需以及塘坝抗旱能力进行了分析。结果表明:土地利用类型中塘坝面积均在3%~5%;水田面积占比亦相当,约为17%,但旱地面积差距较大,样区1占比达50%以上,约为样区2的5倍。样区1水资源供需比远小于1,水资源供需不平衡,而样区2水资源供需达到平衡。2个样区塘坝的抗旱能力分别为50.51%、93.65%,反映了不同土地利用结构下塘坝的抗旱能力明显差异;根据降水概率进行农业生产结构调整,将有助于调控江淮丘陵灌区农业水资源供需平衡。
Pond irrigation is the main way of agricultural irrigation in Jianghuai Hilly Area,the study on the drought resistance capacity of Pond irrigation area in Jianghuai Hilly Area is of great significance to the construction of Pond water conservancy project and the adjustment of agricultural industrial structure.Based on the high-resolution re⁃mote sensing image,the volume of the pond and the effective rainfall,the land use type,water supply and demand,and the drought resistance ability of the pond were analyzed under different rainfall frequency.The results show that the area of pond and dam is 3%~5%and that of paddy field is about 17%,but the area of dry land is quite different.The proportion of sample area 1 is more than 50%,about 5 times of sample area 2.The supply-demand ratio of water resources in sample area 1 is far less than 1,the supply-demand of water resources is unbalanced,and the supplydemand of water resources in sample area 2 is balanced.The drought resistance capacity of Pond in the two areas is 50.51%and 93.65%respectively,which reflects that the drought resistance capacity of Pond is significantly different under different land use structure;according to the probability of precipitation,the adjustment of agricultural produc⁃tion structure will help to regulate the balance of agricultural water supply and demand in the Jianghuai hilly irriga⁃tion area.
作者
时雨莹
周亮广
SHI Yuying(School of Geographic Information and Tourism,Chuzhou University,Chuzhou 239000,China)
出处
《安徽农学通报》
2021年第3期131-134,共4页
Anhui Agricultural Science Bulletin
基金
国家级大学生创新创业训练项目(201910377059)
滁州学院大学生创新创业训练计划项目(2019CXXL047)。
关键词
抗旱能力评价
水量供需平衡
降雨频率
江淮丘陵灌区
Drought resistance evaluation
Rainfall frequency
Water supply and Demand balance
Jianghuai Hilly irrigation area
