The Use of SPEI and TVDI to Assess Temporal-Spatial Variations in Drought Conditions in the Middle and Lower Reaches of the Yangtze River Basin, China
المؤلفون المشاركون
Zhang, Liping
Chen, Shaodan
She, Dunxian
Liu, Xin
Guo, Mengyao
المصدر
العدد
المجلد 2018، العدد 2018 (31 ديسمبر/كانون الأول 2018)، ص ص. 1-11، 11ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2018-08-29
دولة النشر
مصر
عدد الصفحات
11
التخصصات الرئيسية
الملخص EN
Droughts represent the most complex and damaging type of natural disaster, and they have taken place with increased frequency in China in recent years.
Values of the standardized precipitation evapotranspiration index (SPEI) calculated using station-based meteorological data collected from 1961 to 2013 in the middle and lower reaches of the Yangtze River Basin (MLRYRB) are used to monitor droughts.
In addition, the SPEI is determined for different timescales (1, 3, 6, and 12 months) to characterize dry or wet conditions in this study area.
Moreover, remote sensing methods can cover large areas, and multispectral and temporal observations are provided by satellite sensors.
The temperature vegetation dryness index (TVDI) is selected to permit assessment of drought conditions.
In addition, the correlation between the SPEI and TVDI values is calculated.
The results show that the SPEI values over different timescales reflect complex variations in drought conditions and have been well applied in the MLRYRB.
Droughts occurred on an annual basis in 1963, 1966, 1971, 1978, 1979, 1986, 2001, 2011, and 2013, particularly 2011.
In addition, the regional average drought frequency in the study area during 1961–2013 is 30%, as determined using the SPEI.
An analysis of the correlation between the monthly values of the TVDI and the SPEI-3 shows that a negative relationship exists between the SPEI-3 and the TVDI.
That is, smaller TVDI values are associated with greater SPEI-3 values and reduced drought conditions, whereas larger TVDI values are associated with smaller SPEI-3 values and enhanced drought conditions.
Therefore, this study of the relationship between the SPEI and the TVDI can provide a basis for government to mitigate the effects of drought.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Chen, Shaodan& Zhang, Liping& Liu, Xin& Guo, Mengyao& She, Dunxian. 2018. The Use of SPEI and TVDI to Assess Temporal-Spatial Variations in Drought Conditions in the Middle and Lower Reaches of the Yangtze River Basin, China. Advances in Meteorology،Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1119000
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Chen, Shaodan…[et al.]. The Use of SPEI and TVDI to Assess Temporal-Spatial Variations in Drought Conditions in the Middle and Lower Reaches of the Yangtze River Basin, China. Advances in Meteorology No. 2018 (2018), pp.1-11.
https://search.emarefa.net/detail/BIM-1119000
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Chen, Shaodan& Zhang, Liping& Liu, Xin& Guo, Mengyao& She, Dunxian. The Use of SPEI and TVDI to Assess Temporal-Spatial Variations in Drought Conditions in the Middle and Lower Reaches of the Yangtze River Basin, China. Advances in Meteorology. 2018. Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1119000
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1119000
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر