Water Level and Agriculture and Husbandry Characteristics in Qinghai Lake Basin: The Response to Climate Warming and Wetting

doi:10.11924/j.issn.1000-6850.casb17070061

Abstract

Abstract: The paper aims to reveal influence of meteorological and hydrological factors on water level, agriculture and husbandry on Qinghai Lake, which through analyzing long time series meteorological and hydrological monitoring data in Qinghai Lake basin, and modelling water level’s assessment as well as calculating contribution rate of the factors and quantitative evaluate influence on water level and agriculture and husbandry. The results show that climate appeared obvious trend of warm and wet in Qinghai Lake basin. The precipitation showed weak trend of increase, and increased significantly from 2001 to 2015 nearly 15a with a climatic tendency rate of 10.8mm/10a but occurred mutation in 2003. Average temperature, lowest temperature and maximum temperature appeared apparently trend of increase (P<0.01). Water level showed significant trend of decrease from 1961, the change tendency rate was -0.5 m/10a (P<0.01). Nearly 10a from 2004 to 2015, water level had risen sequentially and had been a sudden change from falling to rising in 2004, and rising rate was 14.4m/10a (P<0.01). The order of contribution rate of water level, which is discharge precipitation and evaporation. The change of precipitation, discharge and evaporation had a greater impact on water level in the previous year. Water level had risen in Qinghai Lake was most leading cause for that increasing precipitation and increasing inflow rivers runoff, which through change of the basin precipitation and inflow rivers runoff in recent 15 years.

CLC Number:

P467

汪关信,何灼伦 and 肖建设. Water Level and Agriculture and Husbandry Characteristics in Qinghai Lake Basin: The Response to Climate Warming and Wetting[J]. Chinese Agricultural Science Bulletin, 2018, 34(26): 119-127.

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