| 淮河流域干旱的时空分布特征 |
| |
| 引用本文： | 严四英,翁白莎,景兰舒,李蒙. 淮河流域干旱的时空分布特征[J]. 中国农村水利水电, 2021, 0(4): 160-165,170 |
| |
| 作者姓名： | 严四英 翁白莎 景兰舒 李蒙 |
| |
| 作者单位： | 首都师范大学资源环境与旅游学院;流域水循环模拟与调控国家重点实验室中国水利水电科学研究院;河海大学水文水资源学院 |
| |
| 基金项目： | 流域水循环模拟与调控国家重点实验室自由探索课题“旱涝急转事件对典型农田生态系统的影响”(SKL2020TS02)。 |
| |
| 摘 要： | 淮河流域是我国农作物主要种植区,为了深入认识淮河流域干旱现状及其特征、探究干旱发生规律,减少干旱对农作物造成的不利影响.以淮河流域为研究区域,选取土壤相对湿度作为干旱评价指标,以2010-2019年MODIS数据为数据源,计算出表观热惯量指数(ATI)和植被供水指数(VSWI),根据地表植被覆盖度的不同,筛选出合适的A...
|
| 关 键 词： | 土壤相对湿度 表观热惯量指数ATI 植被供水指数VSWI 反演 时空分布 |
Spatial and Temporal Distribution Characteristics of Droughts in Huaihe River Basin |
| |
| YAN Si-ying,WENG Bai-sha,JING Lan-shu,LI Meng. Spatial and Temporal Distribution Characteristics of Droughts in Huaihe River Basin[J]. China Rural Water and Hydropower, 2021, 0(4): 160-165,170 |
| |
| Authors: | YAN Si-ying WENG Bai-sha JING Lan-shu LI Meng |
| |
| Affiliation: | (College of Resource Environment and Tourism,Capital Normal University,Beijing 100048,China;State Key Laboratory of Simulation and Regulation of Water Cycle in River Basins,China Institute of Water Resources and Hydropower Research,Beijing 100038,China;College of Hydrology and Water Resources,Hohai University,Nanjing 210000,China) |
| |
| Abstract: | Huaihe River Basin is the main crop planting area in China.In order to deeply understand the current situation and characteristics of drought in Huaihe River Basin,this paper explores the law of drought occurrence,and reduces the adverse effects of drought on crops.The Huaihe River Basin is taken as the study area,the soil relative humidity is selected as the drought evaluation index,and the MODIS data from 2010 to 2019 are used as the data source to calculate the apparent thermal inertia index(ATI)and vegetation water supply index(VSWI).Finally,the spatial and temporal distribution characteristics of drought events in the Huaihe River Basin are described through the inversion of soil relative humidity data.The results show that:①drought occurs in all seasons of the year,and the relationship between the area covered by drought is:winter>autumn>spring>summer.②The area covered by droughts in the winter wheat growing season is larger than that in summer maize growing season.③From the perspective of space,the area covered by droughts is wider in the east,northeast and southwest of Huaihe River Basin,and the area covered by droughts is Southwest and Northeast>Westnorth and Southeast,Northeast>southeast,Southwest>Northwest. |
| |
| Keywords: | relative moisture of the soil ATI VSWI inversion spatio-temporal distribution |
| 本文献已被 维普 等数据库收录！ |
|
