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[1]LIU De-kun,WANG Jun-bang,QI Shu-hua.Analysis on Dry Trend Based on Moisture Index in Qinghai Province in the Recent 35 Years[J].Research of Soil and Water Conservation,2014,21(02):246-250,256.

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Analysis on Dry Trend Based on Moisture Index in Qinghai Province in the Recent 35 Years

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 21 Number of periods: 2014 02 Page number: 246-250,256 Column: Public date: 2014-04-28

Title:: Analysis on Dry Trend Based on Moisture Index in Qinghai Province in the Recent 35 Years

Author(s):: LIU De-kun^1,2, WANG Jun-bang², QI Shu-hua¹; 1. School of Geography and Environment, Jiangxi Normal University, Nanchang 330022, China;
2. Key Laboratory of Ecosystem Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China

Keywords:: Qinghai Province; moisture index; change trend

CLC:: S161.3

DOI:: -

Abstract:: This study analyzes the spatiotemporal trends of wetness of Qinghai Province in the recent 35 years (1971—2004) by using the potential evapotranspiration and Thornthwait moisture index (MI) derived from the Penman-Monteith methods recommended by FAO and 1 km spatially interpolated meteorological data. The results suggested a significant warming and indistinctive drying trend overall, while the degree of warming decreases from west to southeast in recent 35 years. Precipitation increases significantly in Tanggula and Chaidamu in the west and decreases in the southeast. However, the moisture index, which integrated the effect of solar radiance, temperature, precipitation, has almost the same spatial patterns of inter-annual variation as the precipitation. In the desert areas, such as Tanggula of western Qinghai and Chaidamu of central Qinghai, the MI increases with a warmer and wetter trend, while in well-vegetated regions near Lantsang, Yellow River, a dryer trend exits with insignificant statistics.

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