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- W2349291879 abstract "Climate in the source regions of the Yangtze and Yellow Rivers has changed to warm-dry in last 50 years. This paper analyzed the data of temperature and precipitation of 12 weather stations in the region. It is found that the air temperature increased within past 50 years. The average increase amplitude is 0.88 ℃ in the region of Yellow River and 0.61 ℃ in the region of Yangtze River. The average annual temperature obviously increased in 1990s. During the last 50 years, the precipitation decreased especially in the east region. However, the precipitation increased during some months such as May and June in the west, and April, May in the east. So the climate has been changing to warm-wet within these months. By analyzing variations of runoff, the paper indicates that the surface runoff in the region has decreased since 1990s. The runoff evolution in the source region of Yangtze River experiences the process from dry to wet, and to dry again. However the runoff of rivers, such as Tutuhe River, increased in the past 20 years for its abundant recharge from the glaciers. Ablation of the glaciers and degradation of the permafrost expedited in the past 50 years especially in 1990s. At the same time, the area of the lakes and swamps reduced. The hydrological environment became worse gradually along with these changes." @default.
- W2349291879 created "2016-06-24" @default.
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- W2349291879 date "2004-01-01" @default.
- W2349291879 modified "2023-09-22" @default.
- W2349291879 title "Changes of weather and hydrological environment for the last 50 years in the source regions of Yangtze and Yellow Rivers" @default.
- W2349291879 hasPublicationYear "2004" @default.
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