Analysis of Drought Characteristics in Xilingol Grassland of Northern China Based on SPEI and Its Impact on Vegetation
المؤلفون المشاركون
Tong, Siqin
Bao, Yuhai
Te, Rigele
Ma, Qiyun
Ha, Si
Lusi, A.
المصدر
Mathematical Problems in Engineering
العدد
المجلد 2017، العدد 2017 (31 ديسمبر/كانون الأول 2017)، ص ص. 1-11، 11ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2017-01-18
دولة النشر
مصر
عدد الصفحات
11
التخصصات الرئيسية
الملخص EN
This research is based on the standardized precipitation evapotranspiration index (SPEI) and normalized difference vegetation index (NDVI) which represent the drought and vegetation condition on land.
Take the linear regression method and Pearson correlation analysis to study the spatial and temporal evolution of SPEI and NDVI and the drought effect on vegetation.
The results show that (1) during 1961–2015, SPEI values at different time scales showed a downward trend; SPEI-12 has a mutation in 1997 and the SPEI value significantly decreased after this year.
(2) During 2000–2015, the annual growing season SPEI has an obvious upward trend in time and the apparent wetting spatially.
(3) In the recent 16 years, the growing season NDVI showed an upward trend and more than 80% of the total area’s vegetation increased in Xilingol.
(4) Vegetation coverage in Xilingol grew better in humid years and opposite in arid years.
SPEI and NDVI had a significant positive correlation; 98% of the region showed positive correlation, indicating that meteorological drought affects vegetation growth more in arid and semiarid region.
(5) The effect of drought on vegetation has lag effect, and the responses of different grassland types to different scales of drought were different.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Tong, Siqin& Bao, Yuhai& Te, Rigele& Ma, Qiyun& Ha, Si& Lusi, A.. 2017. Analysis of Drought Characteristics in Xilingol Grassland of Northern China Based on SPEI and Its Impact on Vegetation. Mathematical Problems in Engineering،Vol. 2017, no. 2017, pp.1-11.
https://search.emarefa.net/detail/BIM-1190662
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Tong, Siqin…[et al.]. Analysis of Drought Characteristics in Xilingol Grassland of Northern China Based on SPEI and Its Impact on Vegetation. Mathematical Problems in Engineering No. 2017 (2017), pp.1-11.
https://search.emarefa.net/detail/BIM-1190662
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Tong, Siqin& Bao, Yuhai& Te, Rigele& Ma, Qiyun& Ha, Si& Lusi, A.. Analysis of Drought Characteristics in Xilingol Grassland of Northern China Based on SPEI and Its Impact on Vegetation. Mathematical Problems in Engineering. 2017. Vol. 2017, no. 2017, pp.1-11.
https://search.emarefa.net/detail/BIM-1190662
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1190662
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