生态环境学报2011，Vol.20Issue(8)：1189-1195,7.
黄土高原陆地表层最大可能蒸散量的变化特征
Change of terrestrial surface potential evapotranspiration in Loess Plateau
摘要
Abstract
On the basis of climatic observational data of monthly average temperature, maximum temperature, minimum temperature, relative humidity, precipitation, wind speed and sunshine duration in Loess plateau from 1961 to 2008, the potential evapotranspiration was computed by using revised Penman-Monteith Model. The temporal-spatial distribution, anomaly distribution and sub-regional temporal variations of the potential evapotranspiration were analyzed as well. The results show that the annual average potential evapotranspiration was mainly between the value of 400~800 mm, and in most parts of the study regions it was 650~750 mm. The main spatial model of annual potential evapotranspiration on Loess plateau is consistent anomaly distribution. The spatial model on Loess plateau can be divided into three key areas: the northwest, the northeast and the southeast areas of Loess plateau, respectively. The potential evapotranspiration displayed a significantly ascending trend and appeared an abrupt change in the northwest area; and in northeast area it displayed a descending trend and appeared an abrupt change too; in the southeast areas of Loess plateau, the potential evapotranspiration displayed a descending trend, but no abrupt change appears. There is an obviously fluctuating period of 3 years on Loess plateau from the year 1961 to 2008.关键词
最大可能蒸散量/空间分布/时间演变/黄土高原Key words
potential evapotranspiration/ spatial distribution/ temporal variation/ Loess plateau分类
天文与地球科学引用本文复制引用
姚玉璧,王润元,杨金虎,岳平,陆登荣,肖国举,王洋,刘林春..黄土高原陆地表层最大可能蒸散量的变化特征[J].生态环境学报,2011,20(8):1189-1195,7.基金项目
国家公益性行业(气象)科研专项(GYHY201106029、GYHY200806021) （气象）
国家自然科学基金重点项目(40830957) （40830957）
中国气象局气候变化专项(280200S011C00) （280200S011C00）
甘肃省气象局第五批“十人计划”项目 （）
干旱气象科学研究基金项目(IAM200904、IAM200913) （IAM200904、IAM200913）
