王兆雪;白雲;张莎;

• 1:青岛大学计算机科学技术学院

摘要(Abstract)：

针对遥感干旱指数对干旱监测的精度和适用性问题,以山东省为研究区,基于MODIS和TRMM卫星遥感数据,选取2002年典型干旱年,计算归一化水分指数(normalized difference water index,NDWI)、归一化植被供水指数(normalized vegetation supply water index,NVSWI)、归一化降水量距平百分率(normalized percentage of precipitation anomaly,NPA),并与10 cm土壤水分数据进行相关性分析,结果显示NVSWI与土壤水分的相关系数最高,能够较好地表征农业干旱的严重程度,是最适合山东省旱情监测的干旱指数。之后采用NVSWI对2001—2015年山东地区的干旱进行时空特征研究和分析,并进一步分析不同生育期干旱对冬小麦产量的影响,结果表明,2001—2015年山东省整体干旱程度减弱,受干旱影响的区域主要集中在鲁西和鲁南地区;4—5月份干旱对冬小麦产量的影响较大,因此,在抽穗期和灌浆期对水分进行管理至关重要。

关键词(KeyWords)： 遥感干旱指数;干旱监测;土壤水分;冬小麦产量;山东省

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(31571565,31671585);; 山东省自然科学基金重大基础研究项目(ZR2017ZB0422)

作者(Author): 王兆雪;白雲;张莎;

Email:

DOI: 10.14083/j.issn.1001-4942.2019.12.025

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