Position: Home > Articles > Applicability of Remote Sensing Drought Index and Effects of Drought on Winter Wheat Yield in Shandong Province
Shandong Agricultural Sciences
2019
(12)
127-136
山东省遥感干旱指数的适用性及干旱对冬小麦产量的影响
作 者：
王兆雪;白雲;张莎
单 位：
青岛大学计算机科学技术学院
关键词：
遥感干旱指数;干旱监测;土壤水分;冬小麦产量;山东省
摘 要：
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。
译 名：
Applicability of Remote Sensing Drought Index and Effects of Drought on Winter Wheat Yield in Shandong Province
作 者：
Wang Zhaoxue;Bai Yun;Zhang Sha;College of Computer Science and Technology, Qingdao University;
关键词：
Remote sensing drought index;;Drought monitoring;;Soil moisture;;Winter wheat yield;;Shandong Province
摘 要：
In the study, Shandong Province was selected as the research area to solve the accuracy and applicability of remote sensing drought index for drought monitoring. We chose the typical drought year as 2002 and calculated NDWI, NVSWI and NPA based on the MODIS and TRMM satellite remote sensing data, and conducted correlation analyses with 10-cm soil moisture data. The results showed that, the correlation coefficient of NVSWI and soil moisture was the biggest, which could better reflect drought degree in agriculture, so it was the most suitable for drought monitoring in Shandong Province. Then we researched and analyzed the spatial and temporal drought characteristics from 2001 to 2015 adopting NVSWI, and further analyzed the effects of different growth periods on the yield of winter wheat. The results showed that the overall drought degree was weaken from 2001 to 2015 in Shandong Province, and the areas affected by drought were mainly in west and south Shandong. Drought happened in April and May showed serious effect on wheat yield, so managing water during heading and filling stages was very important.
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