Meteorological Drought, Hydrological Drought, and NDVI in the Heihe River Basin, Northwest China: Evolution and Propagation
المؤلفون المشاركون
Cheng, Qingping
Zhong, Fanglei
Wang, Ping
المصدر
العدد
المجلد 2020، العدد 2020 (31 ديسمبر/كانون الأول 2020)، ص ص. 1-26، 26ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2020-06-09
دولة النشر
مصر
عدد الصفحات
26
التخصصات الرئيسية
الملخص EN
Understanding the evolution and propagation of different drought types is crucial to reduce drought hazards in arid and semiarid regions.
Here, Standardized Precipitation Index (SPI), Streamflow Drought Index (SDI), and Vegetation Condition Index (VCI) were used to investigate the spatiotemporal variation of different drought types and correlations between Pre (Pre-R)/post (Pos-R)-reservoir.
Results showed that the average peak/intensity/duration/severity of meteorological droughts (MD) were greater in the Pre-R than in the Pos-R period in the upstream Heihe River Basin (UHRB), while there was little change between the Pre-R and Pos-R periods in the midstream Heihe River Basin (MHRB).
The average peak/intensity/duration/severity of hydrological drought (HD) decreased in the mainstream for Yingluoxia (Ylx) but increased for Zhengyixia (Zyx) station in the Pos-R period.
Propagation time decreased by 3 months (negative effect) in Ylx and increased by 8 months (positive effect) in Zyx compared with the Pre-R period.
In the Pos-R period, propagation time increased (1–3 months) for tributaries (positive effect).
Propagation times for the mainstream and tributaries varied for different seasons and time periods.
Pearson’s correlation coefficient values were lower at short timescales (1–3 months) but higher at long timescales for the Pos-R period in Ylx and Zyx for SDI-1 with different timescales of SPI.
The SDI and SPI had no lag in the UHRB and MHRB.
However, VCI with SPI had a significant lag correlation at short timescales in the UHRB (lag 6 months) and MHRB (lag 4 months), and the VCI with SDI had a significant lag correlation for 1 month in the MHRB.
The propagation time from MD to HD has been reduced for Pos-R in the UHRB.
There was a positive effect (prolonged MD propagation HD time) in Pos-R but still faces serious drought stress in the MHRB.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Zhong, Fanglei& Cheng, Qingping& Wang, Ping. 2020. Meteorological Drought, Hydrological Drought, and NDVI in the Heihe River Basin, Northwest China: Evolution and Propagation. Advances in Meteorology،Vol. 2020, no. 2020, pp.1-26.
https://search.emarefa.net/detail/BIM-1126794
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Zhong, Fanglei…[et al.]. Meteorological Drought, Hydrological Drought, and NDVI in the Heihe River Basin, Northwest China: Evolution and Propagation. Advances in Meteorology No. 2020 (2020), pp.1-26.
https://search.emarefa.net/detail/BIM-1126794
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Zhong, Fanglei& Cheng, Qingping& Wang, Ping. Meteorological Drought, Hydrological Drought, and NDVI in the Heihe River Basin, Northwest China: Evolution and Propagation. Advances in Meteorology. 2020. Vol. 2020, no. 2020, pp.1-26.
https://search.emarefa.net/detail/BIM-1126794
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1126794
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