[1]马建琴,陈 阳,郝秀平,等.2001—2019年河南省地表蒸散发时空变化及其影响因素[J].水土保持研究,2021,28(05):134-141.
　MA Jianqin,CHEN Yang,HAO Xiuping,et al.Temporal and Spatial Changes of Surface Evapotranspiration and Its Influencing Factors in Henan Province from 2001 to 2019[J].Research of Soil and Water Conservation,2021,28(05):134-141.
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2001—2019年河南省地表蒸散发时空变化及其影响因素

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 28 期数: 2021年05期 页码: 134-141 栏目: 出版日期: 2021-08-20
Title:
Temporal and Spatial Changes of Surface Evapotranspiration and Its Influencing Factors in Henan Province from 2001 to 2019
文章编号:
1005-3409(2021)05-0134-08
作者:
马建琴1,陈 阳1,郝秀平1,李丹丹2
(1.华北水利水电大学,郑州 450045; 2.郑州大学,郑州 450045)
Author(s):
MA Jianqin1,CHEN Yang1,HAO Xiuping1,LI Dandan2
(1.North China University of Water Resources and Electric Power,Zhengzhou 450045,China; 2.Zhengzhou University,Zhengzhou 450045,China)
关键词:
地表蒸散发(ET);  时空特征;  影响因素;  MODIS;  河南省
Keywords:
surface evapotranspiration(ET);  temporal and spatial characteristics;  influencing factors;  MODIS;  Henan Province
分类号:
P426.2
文献标志码:
A
摘要:
探究河南省地表实际蒸散发时空变化特征及其影响因素,为该区域的生态水源保护研究与生态需水量研究提供理论依据。基于2001—2019年河南省的MOD16 ET时序数据、MOD13 DNVI时序数据以及河南省内部及周边104个气象站数据,借助于Theil-Sen趋势与Mann-Kendall检验等统计方法和单相关、偏相关以及复相关分析法,分析了研究区的地表实际蒸散发(ET)时空变化特征及其影响因素。结果表明:(1)2001—2019年河南省多年平均ET值为509.22 mm,年际变化率波动明显,ET年内具有强烈的季节差异性;(2)多年平均ET空间分布总体呈现南高北低的格局,全省ET整体有上升趋势;(3)河南省多年月平均ET值和NDVI值两者皆呈双峰型变化规律,且存在显著的正相关关系;(4)ET与气温、降水整体均呈现正相关关系,驱动分区结果表明,河南省ET不同地区主要受气温或降水气象因子单一驱动影响。近19年来河南省蒸散发整体呈现增大趋势,且具有明显空间差异特征,NDVI、气温和降水与ET整体处于正相关性。
Abstract:
Exploring the characteristics of temporal and spatial changes of actual surface evapotranspiration in Henan Province and its influencing factors can provide theoretical basis for the study of ecological water source protection and ecological water demand in this area. Based on the MOD16 ET time series data,MOD13 DNVI time series data of Henan Province from 2001 to 2019,and the data of 104 weather stations in and around Henan Province,the temporal and spatial characteristics of actual evapotranspiration(ET)in the study area and its influencing factors were analyzed by using the statistical methods such as Theil-Sen trend and Mann-Kendall test,and single correlation,partial correlation and the multiple correlation analysis method. The results show that:(1)the multi-year average ET value of Henan Province from 2001 to 2019 was 509.22 mm,the inter-annual rate of change fluctuated significantly,and there were significantly seasonal differences of ET during these years;(2)the multi-year average ET spatial distribution generally showed a pattern of high in the south and low in the north; there was an overall upward trend;(3)both the multi-year average monthly ET value and NDVI value of Henan Province showed a bimodal change pattern,and there was a significantly positive correlation between them;(4)ET had a positive correlation with temperature and precipitation as a whole,and the result of driving division showed that ET of different areas in Henan Province were mainly affected by a single driving force of temperature or precipitation. In the past 19 years,the overall evapotranspiration in Henan Province had shown an increasing trend with obvious spatial differences. NDVI,temperature and precipitation were overall positively correlated with ET.

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备注/Memo

收稿日期:2020-09-28 修回日期:2020-10-14
资助项目:河南省高校科技创新人才支持计划(15HASTIT046); 河南省科技攻关项目(152102110095); 河南省高等学校重点科研项目(15A570008)
第一作者:马建琴(1973—),女,河南郑州人,工学博士,博士生导师,研究方向为农业水资源可持续利用、区域水资源优化配置、水环境研究。E-mail:majianqin@ncwu.edu.con
通信作者:陈阳(1994—),男,河南驻马店人,硕士研究生,研究方向为农业水资源可持续利用、生态环境遥感研究。E-mail:1558900604@qq.com

更新日期/Last Update: 2021-08-20