| 引用本文: | 乔姗姗,潘红卫,雷宏军,等.基于累积相对湿润指数的遵义市农业干旱特征研究[J].灌溉排水学报,2017,36(8):. |
| QIAO Shanshan,PAN Hongwei,LEI Hongjun,et al.基于累积相对湿润指数的遵义市农业干旱特征研究[J].灌溉排水学报,2017,36(8):. |
|
| 摘要: |
| 为了给区域农业干旱评估、风险管理及应用决策提供科学依据，基于遵义地区及其周边国家级气象站点1953—2012年资料，考虑作物实际蒸散量及贵州喀斯特地貌对降水的有效利用能力，利用累积相对湿润指数对贵州省遵义地区农业干旱情况进行了评估。结果表明，遵义市县域净灌溉需水量年均值在160~353 mm之间，遵义各县域累积相对湿润指数Ma的年际变化范围为-0.44~0.68，年均在-0.24~0.23之间，1953—2012年累积相对湿润指数呈现略下降趋势。8—10月是抗旱管理的关键月份。遵义市累积相对湿润指数Ma在空间上呈现从北到南逐渐减小的分布特征，中部的桐梓县，南部的遵义县、湄潭县、余庆县是抗旱管理的重点县域。 |
| 关键词: 遵义市； 累积相对湿润指数； 农业干旱； 时空分布； 影响因素 |
| DOI： |
| 分类号: |
| 基金项目: |
|
| Analyzing the Drought Characteristic of Zunyi Using the Accumulated Relative Humidity Index |
|
QIAO Shanshan, PAN Hongwei, LEI Hongjun, XU Jianxin, SAHNG Chongju
|
|
School of Water Conservancy, North China University of Water Conservancy and Electric Power, Zhengzhou 450045, China; Center for Disaster Prevention and Mitigation, Water Resources Research Institute of Guizhou Province, Guiyang 550002, China
|
| Abstract: |
| This paper analyzed the characteristics of drought in Zunyi based on national meteorological data measured from weather stations within Zunyi City and its proximal areas from 1953 to 2012. The accumulated relative humidity index （Ma） was calculated from the actual crop evapotranspiration and the effective rainfall in a Karst region. The results showed that from 1953 to 2012, the annual average net irrigation water requirement ranged from 160 mm to 353 mm in this region. The value of Ma in seven counties of Zunyi decreased with the inter-annual Ma ranging from -0.44 to 0.68 and the annual average ranging from -0.24 to 0.23. The likely occurrence of drought was between August and October. The accumulated humidity index Ma in the region decreased from the north to the south. Tongzi County, Meitan County, Yuqing County and Zunyi County were the counties where greatest care should be taken in managing droughts. |
| Key words: Zunyi city; accumulated humidity index; agricultural drought; spatial and temporal distribution; influencing factor |
