Next Article in Journal
Decarbonisation of Urban Freight Transport Using Electric Vehicles and Opportunity Charging
Previous Article in Journal
Mobility Policies and Extra-Small Projects for Improving Mobility of People with Autism Spectrum Disorder
Article Menu
Issue 9 (September) cover image

Export Article

Open AccessArticle
Sustainability 2018, 10(9), 3257; https://doi.org/10.3390/su10093257

Rescaled Statistics and Wavelet Analysis on Agricultural Drought Disaster Periodic Fluctuations in China from 1950 to 2016

Department of Ecology, School of Life Sciences, Nanjing University, Nanjing 210093, China
*
Author to whom correspondence should be addressed.
Received: 18 July 2018 / Revised: 31 August 2018 / Accepted: 5 September 2018 / Published: 12 September 2018
(This article belongs to the Section Sustainable Agriculture, Food and Wildlife)
Full-Text   |   PDF [2841 KB, uploaded 12 September 2018]   |  

Abstract

An agricultural drought disaster was analyzed with the new insight of rescaled statistics (R/S) and wavelet analysis in this study. The results showed that: (1) the Hurst index of the agricultural disaster area, the inundated area of agricultural drought disaster, and the grain loss was 0.821, 0.874, and 0.953, respectively, indicating that the process of the agricultural drought disaster had stronger positive continuity during the study period; (2) based on the Morlet analysis of the agricultural disaster area, the inundated area of the agricultural drought disaster, and the grain loss of China from 1950 to 2016, the time series of the agricultural drought had multiple time scale features with the periodic variation on a large scale containing the periodic variation on a small scale; and (3) in the last 67 years, the strong wavelet energy spectrum of the agricultural disaster area, the inundated area of the agricultural drought disaster, and the grain loss was at the time scale of ≈22–32 years, ≈24–32 years, and ≈25–32 years, respectively. In addition, the first major period in the agricultural drought disaster area, the inundated area of agricultural drought disaster, and the grain loss had average periods of approximately 16 years, 16 years, and 18 years, respectively. View Full-Text
Keywords: R/S; Morlet analysis; agricultural drought disaster; periodic oscillation R/S; Morlet analysis; agricultural drought disaster; periodic oscillation
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Wang, Q.; Liu, Y.; Tong, L.; Zhou, W.; Li, X.; Li, J. Rescaled Statistics and Wavelet Analysis on Agricultural Drought Disaster Periodic Fluctuations in China from 1950 to 2016. Sustainability 2018, 10, 3257.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sustainability EISSN 2071-1050 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top