干旱区生态环境知识资源中心(Arid): 黄河上游重要水源补给区参考作物蒸散量变化特征分析

Arid

	黄河上游重要水源补给区参考作物蒸散量变化特征分析
其他题名	Analysis of variation characteristics of reference crop evapotranspiration in important water source supply areas of the Yellow River
	汪治桂 1; 王素萍 1; 王建兵 2; 张胜智 2
来源期刊	干旱地区农业研究
ISSN	1000-7601
出版年	2012
卷号	30 期号:6 页码:243-246,260
中文摘要	利用甘南牧区4个气象观测站19712010年的地面气象观测资料,运用Penman-Monteith公式计算得出牧区四站逐月ET_0值。通过统计分析、相关分析、小波及Mann-Kendall法等方法对甘南牧区ET_0的变化特征进行了分析,并就高原上气象因子与ET_0的相关性做了进一步研究。结果发现甘南牧区各县ET_0年际变化呈逐年上升趋势,上升趋势达8.8~19.5 mm/10a;1985年以前有明显的准10 a周期,2000年到2010年间出现了准5 a周期;在90年代以后的20年中上升更快,并于1996年以后出现了突增。牧区ET_0夏季最大,并且逐年上升最快;冬季最小,逐年上升最慢。牧区ET_0的空间分布不均匀除了与当地高原特殊地形地貌复杂性有关外,还与影响参考作物蒸散量的主要气象因子的不同有关。
英文摘要	Because of natural and human factors, in recent years the grassland ecology of the upper reaches of the Yellow River was badly damaged by grassland degradation, desert ification, and even some places the phenomenon such as water resources exhausted. Reference crop evapo-transpirat ion amount (ET_0) changes and have great influence on the water resources and ecological status, so the pastoral areas of Gannan ET_0 change characteristics are analyzed, and further research is carried out on whether the effect of plateau meteorological factors is significant on ETo of the pastoral areas. The meteorological data from 4 observatory stat ions in Gannan pastoral areas in 1971-2010 years are used to calculate ET_0 value of pastoral area from month to month with Penman-Monteith formula. Through statist ical analysis, correlation analysis, small affected Mann-Kendall method, it is found that interannual variability of ET 0 in Gannan pastoral areas increases year by year, rising to 8. 8~ 19. 5 mm/ 10a; it shows a obvious 10-year cycle before 1985 while a 5-year cycle from 2000-2010; and it appears a faster rise in the recent 20 years since the 1990s, and even a sudden increase after 1996. The ET_0 of pastoral areas in summer is the largest and rises fastest year after year; while it in winter is the minimum and rises slowest yearby year. The uneven spatial distribut ion of ET_0 in pastoral areas is related not only to the complexity of local special plateau topography, but also to the difference of main meteorological factors influencing the amount of evapo-transpiration.
中文关键词	变化特征 ; 甘南牧区
英文关键词	ET_0 reference crop evapotranspiration (ET_0) variat ion characterist ic Gannan pastoral area
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:4710216
来源机构	中国气象局兰州干旱气象研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/227976
作者单位	1.中国气象局兰州干旱气象研究所, 甘肃省干旱气候变化与减灾重点实验室, 兰州, 甘肃 730020, 中国; 2.甘南州气象局, 合作, 甘肃 747000, 中国
推荐引用方式 GB/T 7714	汪治桂,王素萍,王建兵,等. 黄河上游重要水源补给区参考作物蒸散量变化特征分析[J]. 中国气象局兰州干旱气象研究所,2012,30(6):243-246,260.
APA	汪治桂,王素萍,王建兵,&张胜智.(2012).黄河上游重要水源补给区参考作物蒸散量变化特征分析.干旱地区农业研究,30(6),243-246,260.
MLA	汪治桂,et al."黄河上游重要水源补给区参考作物蒸散量变化特征分析".干旱地区农业研究 30.6(2012):243-246,260.