[1]周 璐,汤弟伟,刘 恒,等.武陵山区地表蒸散量时空变化特征及其对气候变化的响应[J].水土保持研究,2022,29(06):206-213.
　ZHOU Lu,TANG Diwei,LIU Heng,et al.Spatiotemporal Variation of Surface Evapotranspiration of Wuling Mountainous Area and Its Response to Climate Change During 2000—2014[J].Research of Soil and Water Conservation,2022,29(06):206-213.
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武陵山区地表蒸散量时空变化特征及其对气候变化的响应

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 29 期数: 2022年06期 页码: 206-213 栏目: 出版日期: 2022-10-20
Title:
Spatiotemporal Variation of Surface Evapotranspiration of Wuling Mountainous Area and Its Response to Climate Change During 2000—2014
文章编号:
1005-3409(2022)06-0206-08
作者:
周 璐1, 汤弟伟1, 刘 恒1, 宋鄂平1,2, 刘小芳3
(1.湖北民族大学 林学园艺学院, 湖北 恩施 445000; 2.鄂西生态文化旅游研究中心, 湖北 恩施 445000; 3.恩施土家族苗族自治州自然资源和规划局, 湖北 恩施 445000)
Author(s):
ZHOU Lu1, TANG Diwei1, LIU Heng1, SONG Eping1,2, LIU Xiaofang3
(1.College of Forestry and Horticulture, Hubei Minzu University, Enshi, Hubei 445000, China; 2.Western Hubei Ecological Culture Tourism Research Center, Enshi, Hubei 445000, China; 3.Natural Resources and Planning Bureau of Enshi Tujia & Miao Autonomous Prefecture, Enshi, Hubei 445000, China)
关键词:
蒸散量;  MOD16;  武陵山区;  时空变化特征;  气候变化
Keywords:
evapotranspiration;  MOD16;  Wuling Mountainous Area;  spatiotemporal variation;  climate change
分类号:
P426.2
文献标志码:
A
摘要:
蒸散发(ET)是水文过程的关键环节,研究ET时空变化特征及其对气候变化的响应,有助于理清区域水资源与气候变化的关系。基于MOD16 ET数据集和气象数据,采用Sen趋势分析、Hurst指数和相关性分析等方法,分析了武陵山区2000—2014年ET的时空变化特征及气候因子对ET的影响。结果表明:(1)武陵山区近15 a ET呈波动增加趋势; ET月际差异明显,表现为先增后减的单峰型变化趋势。(2)ET空间上整体呈现中部高、四周低的分布格局; 不同土地利用类型ET大小依次为林地>草地>灌木地>耕地,低山平均ET最高,四季ET均值呈现夏季>春季>秋季>冬季。(3)ET空间变化和趋势均处于相对稳定状态,未来ET增加区域与减少区域面积大致相当。(4)各气象因子对ET作用大小排序为气温>风速>降水>太阳辐射>湿度,且与气温、太阳辐射和风速为正相关,与降水和湿度为负相关,气温是其主要影响因子。综上,气候变化是武陵山区ET波动增加的驱动因素,但各因子的影响程度和范围差异较大。
Abstract:
Evapotranspiration(ET)is a key aspect of the hydrological processes. Assessing the spatiotemporal characteristics of ET and its response to climate change can help to clarify the relationship between regional water resources and climate change. Based on the MOD16 ET dataset and meteorological data, the spatiotemporal variation characteristics of ET and the influence of climate factors on ET in the Wuling Mountainous Area from 2000 to 2014 were discussed by using the methods of Sen trend analysis, Hurst index and correlation analysis. The results showed that:(1)In the Wuling Mountainous Area, ET showed a fluctuating increase in the past 15 years; the monthly difference of ET was obvious, showing a single-peak change trend that first increased and then decreased.(2)The overall ET spatially presents a distribution pattern of high in the middle and low in the surrounding area; ET of different land use types is mainly represented by woodland>grassland>shrub land>cultivated land. The average ET of low mountain was the highest, and the order of the average ET of four seasons was summer>spring >autumn>winter.(3)The spatial variation and trend of ET are in a relatively stable state, and the area of increase and decrease of ET is roughly equal in the future.(4)The order of the effects of meteorological factors on ET was temperature>wind speed>precipitation>solar radiation>humidity, which was positively correlated with temperature, solar radiation and wind speed, but negatively correlated with precipitation and humidity, and air temperature is the main influencing factor. In summary, climate change is a driver of increased ET fluctuations in the Wuling Mountainous Area, but the degree and extent of influence of each factor varies widely.

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备注/Memo

收稿日期:2021-07-07 修回日期:2021-09-11
资助项目:国家自然科学基金(71663017); 湖北民族大学博士启动金(4158002); 湖北省大学生创新创业训练项目(S202110517081); 鄂西生态文化旅游研究中心开放课题(PT072009)
第一作者:周璐(1997—),女(土家族),湖北鹤峰人,硕士研究生,研究方向为资源环境评价与管理。E-mail:1058952389@qq.com
通信作者:汤弟伟(1987—),男(土家族),湖北建始人,博士,讲师,主要从事资源环境评价与管理研究。E-mail:jstdw@163.com

更新日期/Last Update: 2022-10-20