Change of precipitation characteristics in the water-wind erosion crisscross region on the Loess Plateau, China, from 1958 to 2015

Abstract Precipitation plays an important and crucial role in processes in the water-wind erosion crisscross region of the Loess Plateau than in other parts of the region. We analyzed precipitation data and standardized precipitation index (SPI) at 14 representative synoptic stations from 1958 to 20...

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Autores principales:	Xingkai Zhao, Zengyao Li, Qingke Zhu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5ea10393b99d4d749437b89c70983576
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spelling	oai:doaj.org-article:5ea10393b99d4d749437b89c709835762021-12-02T16:06:11ZChange of precipitation characteristics in the water-wind erosion crisscross region on the Loess Plateau, China, from 1958 to 201510.1038/s41598-017-08600-y2045-2322https://doaj.org/article/5ea10393b99d4d749437b89c709835762017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-08600-yhttps://doaj.org/toc/2045-2322Abstract Precipitation plays an important and crucial role in processes in the water-wind erosion crisscross region of the Loess Plateau than in other parts of the region. We analyzed precipitation data and standardized precipitation index (SPI) at 14 representative synoptic stations from 1958 to 2015 used trend-free prewhitening, linear trend estimation, Spearman’s rho test, the Mann-Kendall trend test, the Mann-Kendall abrupt change test and rescaled range analysis. The following conclusions were drawn. First, the analysis of monthly precipitation at all stations suggested that precipitation during the rainy season (July, August, September), especially rain in July and August, exhibited a general decreasing trend, while both increasing and decreasing trends were observed in other months. Moreover, the annual precipitation of all stations continued to exhibit decreasing trends except Wuzhai. Erosive rainfall frequency in the rainy season and the annual scale was weakly reduced but erosive force of single rainfall has been enhanced. Second, the SPI exhibited different increasing degrees in winter, while decreasing trends were observed in other seasons. Additionally, the annual-scale SPI at most stations exhibited a stable and sustained downward trend. Therefore, this region is currently associated with a drought trend, and the drought degree will likely continue to increase.Xingkai ZhaoZengyao LiQingke ZhuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-16 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Xingkai Zhao Zengyao Li Qingke Zhu Change of precipitation characteristics in the water-wind erosion crisscross region on the Loess Plateau, China, from 1958 to 2015
description	Abstract Precipitation plays an important and crucial role in processes in the water-wind erosion crisscross region of the Loess Plateau than in other parts of the region. We analyzed precipitation data and standardized precipitation index (SPI) at 14 representative synoptic stations from 1958 to 2015 used trend-free prewhitening, linear trend estimation, Spearman’s rho test, the Mann-Kendall trend test, the Mann-Kendall abrupt change test and rescaled range analysis. The following conclusions were drawn. First, the analysis of monthly precipitation at all stations suggested that precipitation during the rainy season (July, August, September), especially rain in July and August, exhibited a general decreasing trend, while both increasing and decreasing trends were observed in other months. Moreover, the annual precipitation of all stations continued to exhibit decreasing trends except Wuzhai. Erosive rainfall frequency in the rainy season and the annual scale was weakly reduced but erosive force of single rainfall has been enhanced. Second, the SPI exhibited different increasing degrees in winter, while decreasing trends were observed in other seasons. Additionally, the annual-scale SPI at most stations exhibited a stable and sustained downward trend. Therefore, this region is currently associated with a drought trend, and the drought degree will likely continue to increase.
format	article
author	Xingkai Zhao Zengyao Li Qingke Zhu
author_facet	Xingkai Zhao Zengyao Li Qingke Zhu
author_sort	Xingkai Zhao
title	Change of precipitation characteristics in the water-wind erosion crisscross region on the Loess Plateau, China, from 1958 to 2015
title_short	Change of precipitation characteristics in the water-wind erosion crisscross region on the Loess Plateau, China, from 1958 to 2015
title_full	Change of precipitation characteristics in the water-wind erosion crisscross region on the Loess Plateau, China, from 1958 to 2015
title_fullStr	Change of precipitation characteristics in the water-wind erosion crisscross region on the Loess Plateau, China, from 1958 to 2015
title_full_unstemmed	Change of precipitation characteristics in the water-wind erosion crisscross region on the Loess Plateau, China, from 1958 to 2015
title_sort	change of precipitation characteristics in the water-wind erosion crisscross region on the loess plateau, china, from 1958 to 2015
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/5ea10393b99d4d749437b89c70983576
work_keys_str_mv	AT xingkaizhao changeofprecipitationcharacteristicsinthewaterwinderosioncrisscrossregionontheloessplateauchinafrom1958to2015 AT zengyaoli changeofprecipitationcharacteristicsinthewaterwinderosioncrisscrossregionontheloessplateauchinafrom1958to2015 AT qingkezhu changeofprecipitationcharacteristicsinthewaterwinderosioncrisscrossregionontheloessplateauchinafrom1958to2015
_version_	1718385092013850624

Change of precipitation characteristics in the water-wind erosion crisscross region on the Loess Plateau, China, from 1958 to 2015

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