Temporal - Spatial Analysis of Temperature and Its Effect on Climate and Water in Qinghai Gonghe Basin
Temporal - Spatial Analysis of Temperature and Its Effect on Climate and Water in Qinghai Gonghe Basin
复制标题
DOI：
--
复制
发表时间：
2004
期刊：
影响因子：
--
通讯作者：
L. Qi
中科院分区：
文献类型：
--
作者：
L. Qi
共和盆地位于青藏高原东北部。利用时间序列方法、DEM和Penman-Mon-teith方程，利用察布恰地区3个气象站1953-2001年的气象资料和察布恰地区1980-2002年的土壤水分资料，探讨了察布恰地区气温的时空特征及其对气候和水分的影响。结果表明：年平均气温时间序列不是平稳的，而是呈线性上升趋势，根据共和盆地的线性模型，茶卡、恰布恰和贵南的年平均气温分别以每年0.0247、0.0422和0.0272℃的速度递增;此外，本发明还在数字高程模型基础上，采用多变量线性模型模拟年平均气温的空间分布（DEM 100× 100 m2），并利用3个常设气象站和10多个临时气象站的资料进行了模拟。两大沙带（沙祖峪-塔拉和木格滩）处于较高的温度范围（1.0-4.0℃和1.0-2.9℃），在空间上，年平均气温与潜在蒸散量之间存在正相关关系：随着气温的升高，土壤饱和压差和潜在蒸散量逐渐增大，表层土壤水分逐渐减少;这将使青海共和盆地未来气候更加干燥，荒漠化将逐渐加剧。但在短期内，特别是在研究期间，气候变化很小，因此共和盆地荒漠化的成因还需要进一步分析。
In the northeastern part of Qinghai-Tibetan plateau lies Gong-he basin. The paper discusses the temporal-spatial characteristic of temperature and its effect on climate and water according to the meteorological data (1953-2001) from three weather stations and soil water material (1980-2002) in Qiabuqia weather station by time series method, DEM and Penman-Mon-teith equation. The results show that annual temperature time series are not stationary, but with linear upward trend; and annual average temperature in Chaka and Qiabuqia and Guinan is increasing by 0.0247,0.0422 and 0.0272℃ respectively per year according to the linear model in Gong-he basin; furthermore, the spatial distribution of annual average temperature can be simulated by using multivariable linear model based on digital elevation model (DEM 100×100m2) and by using the data at three permanent weather stations and more than ten temporary weather stations. The two big sand bands(Shazuyu-Tala and Mugetan) is in the higher scope of temperature(1.0-4.0℃ and 1.0-2.9℃) according to the simulated result, and there is a direct correlation between annual temperature and potential evapotranspiration in space; with temperature rising, the saturated difference of water pressure and potential evapotranspiration increases gradually, and soil water decreases in topsoil; so it makes the climate drier, and desertification become more serious gradually in the future in Gong-he basin in Qinghai province. But in short-term, especially in the period of research, the change of climate is very slight, so the cause of desertification needs to be analyzed further in Gong-he basin.