地理科学进展 ›› 2020, Vol. 39 ›› Issue (2): 255-264.doi: 10.18306/dlkxjz.2020.02.007
收稿日期:
2019-01-18
修回日期:
2019-03-18
出版日期:
2020-02-28
发布日期:
2020-04-28
通讯作者:
赵军
作者简介:
温媛媛(1992— ),女,山西吕梁人,博士生,主要从事环境遥感与GIS应用研究。E-mail:littlewendy0203@163.com
基金资助:
WEN Yuanyuan, ZHAO Jun*(), WANG Yanqiang, WANG Yuchun, WANG Jianbang
Received:
2019-01-18
Revised:
2019-03-18
Online:
2020-02-28
Published:
2020-04-28
Contact:
ZHAO Jun
Supported by:
摘要:
基于MOD16全球蒸散发产品和气象站点实测数据,运用变异系数法、Sen趋势法等研究了山西省2000—2014年地表蒸散发ET、潜在蒸散发PET的空间分布特征、变化趋势及影响因素。结果表明:① MOD16蒸散产品与气象站点实测蒸散发之间具有良好的时空相关性(R 2=0.90),其产品精度可以满足山西省蒸散发时空分布研究的要求;②山西省多年平均ET、PET分别为816.77、1608.46 mm,年内变化表现为先增高后下降的“单峰”型分布,二者差值在5月、6月最大,此时山西省最为干旱;③ 全省年平均ET呈现西北低、东南高的分布特征,PET呈西南高、东北低的分布特征,二者差值整体上较大,表现为全省地表水分比较缺乏,其中忻州、吕梁西部最为严重;④ 全省近15 a来ET和PET的年际变化都比较小,整体上全省PET在增加,ET在相对减少,意味着近15 a来干旱情况在加剧;⑤ ET、PET的时空变化与诸多气象因子相关,在空间尺度上与降水、相对湿度密切相关,在时间尺度上与气温、降水关系最为密切。
温媛媛, 赵军, 王炎强, 王玉纯, 王建邦. 基于MOD16的山西省地表蒸散发时空变化特征分析[J]. 地理科学进展, 2020, 39(2): 255-264.
WEN Yuanyuan, ZHAO Jun, WANG Yanqiang, WANG Yuchun, WANG Jianbang. Spatiotemporal variation characteristics of surface evapotranspiration in Shanxi Province based on MOD16[J]. PROGRESS IN GEOGRAPHY, 2020, 39(2): 255-264.
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