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Article

Spatial–Temporal Characteristics of Precipitation and Its Relationship with Land Use/Cover Change on the Qinghai-Tibet Plateau, China

by 1 and 1,2,*
1
School of Land Science and Technology, China University of Geosciences Beijing, Beijing 100083, China
2
Land Consolidation and Rehabilitation Center, Ministry of Natural Resources, Beijing 100035, China
*
Author to whom correspondence should be addressed.
Academic Editor: Julia Jones
Land 2021, 10(3), 269; https://doi.org/10.3390/land10030269
Received: 8 February 2021 / Revised: 1 March 2021 / Accepted: 3 March 2021 / Published: 6 March 2021
(This article belongs to the Special Issue Land Use and Climate Change)
The Qinghai-Tibet Plateau (QTP) is an area sensitive to global climate change, and land use/land cover change (LUCC) plays a vital role in regulating climate system at different temporal and spatial scales. In this study, we analyzed the temporal and spatial trend of precipitation and the characteristics of LUCC on the QTP. Meanwhile, we also used the normalized difference vegetation index (NDVI) as an indicator of LUCC to discuss the relationship between LUCC and precipitation. The results show the following: (1) Annual precipitation showed a fluctuant upward trend at a rate of 11.5 mm/decade in this area from 1967 to 2016; three periods (i.e., 22 years, 12 years, and 2 years) of oscillations in annual precipitation were observed, in which expectant 22 years is the main oscillation period. It was predicted that QTP will still be in the stage of increasing precipitation. (2) The LUCC of the plateau changed apparently from 1980 to 2018. The area of grassland decreased by 9.47%, and the area of unused land increased by 7.25%. From the perspective of spatial distribution, the transfer of grassland to unused land occurred in the western part of the QTP, while the reverse transfer was mainly distributed in the northwestern part of the QTP. (3) NDVI in the northern and southwestern parts of the QTP is positively correlated with precipitation, while negative correlations are mainly distributed in the southeast of the QTP, including parts of Sichuan and Yunnan Province. Our results show that precipitation in the QTP has shown a fluctuating growth trend in recent years, and precipitation and NDVI are mainly positively correlated. Furthermore, we hope that this work can provide a theoretical basis for predicting regional hydrology, climate change, and LUCC research. View Full-Text
Keywords: Qinghai-Tibet Plateau; precipitation; trend analysis; wavelet analysis; ANUSPLIN; LUCC; NDVI Qinghai-Tibet Plateau; precipitation; trend analysis; wavelet analysis; ANUSPLIN; LUCC; NDVI
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MDPI and ACS Style

Zhang, B.; Zhou, W. Spatial–Temporal Characteristics of Precipitation and Its Relationship with Land Use/Cover Change on the Qinghai-Tibet Plateau, China. Land 2021, 10, 269. https://doi.org/10.3390/land10030269

AMA Style

Zhang B, Zhou W. Spatial–Temporal Characteristics of Precipitation and Its Relationship with Land Use/Cover Change on the Qinghai-Tibet Plateau, China. Land. 2021; 10(3):269. https://doi.org/10.3390/land10030269

Chicago/Turabian Style

Zhang, Bo, and Wei Zhou. 2021. "Spatial–Temporal Characteristics of Precipitation and Its Relationship with Land Use/Cover Change on the Qinghai-Tibet Plateau, China" Land 10, no. 3: 269. https://doi.org/10.3390/land10030269

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