Experimental Study of the Imbalance of Water Budget over the Loess Plateau of China

The imbalance of land-surface water budget was discovered in past studies, but there have been few further investigations on the relevant causes. To probe into the problem, annual variations of precipitation and land-surface evapotranspiration were analyzed by using the historical observation data f...

Full description

Saved in:
Bibliographic Details
Published inActa meteorologica Sinica Vol. 25; no. 6; pp. 765 - 773
Main Authors Zhang, Qiang, Wang, Sheng, Wen, Xiaomei, Li, Hongyu
Format Journal Article
LanguageEnglish
Published Heidelberg The Chinese Meteorological Society 01.12.2011
Subjects
Atmospheric Protection/Air Quality Control/Air Pollution
Atmospheric Sciences
Earth and Environmental Science
Earth Sciences
Geophysics and Environmental Physics
Meteorology
中国黄土
原水
土地补偿
失衡
实验
表面观测
陆面蒸散
预算
China, People's Rep., Loess Plateau
China, People's Rep
water budget imbalance over land surface
water resources
evapotranspiration
Loess Plateau
Online AccessGet full text

Cover

More Information
Summary:The imbalance of land-surface water budget was discovered in past studies, but there have been few further investigations on the relevant causes. To probe into the problem, annual variations of precipitation and land-surface evapotranspiration were analyzed by using the historical observation data from a compre- hensive land-surface observation base of LOPEX （Loess Plateau Experiment）. A remarkable imbalance in the land-surface water budget was found, and the total annual imbalance reached 20.6%. Then, the impact factors related to additional water budget components and observational methods were studied. The total annual imbalance could be reduced to 3.8% by using a combination of compensated land-surface water bud- get components and the surface evapotranspiration values obtained from the large-scale weighing lysimeter rather than from the eddy correlation method.
Bibliography:11-2277/P
The imbalance of land-surface water budget was discovered in past studies, but there have been few further investigations on the relevant causes. To probe into the problem, annual variations of precipitation and land-surface evapotranspiration were analyzed by using the historical observation data from a compre- hensive land-surface observation base of LOPEX （Loess Plateau Experiment）. A remarkable imbalance in the land-surface water budget was found, and the total annual imbalance reached 20.6%. Then, the impact factors related to additional water budget components and observational methods were studied. The total annual imbalance could be reduced to 3.8% by using a combination of compensated land-surface water bud- get components and the surface evapotranspiration values obtained from the large-scale weighing lysimeter rather than from the eddy correlation method.
ZHANG Qiang, WANG Sheng, WEN Xiaomei, and LI HongyuKey Laboratory of Arid Climatic Change and Disaster Reduction of Gansu Province/Key Open Laboratory of Arid Climatic Change and Disaster Reduction of CMAjInstitute of Arid Meteorology, CMA, Lanzhou 730020 Gansu Provincial Meteorological Service, Lanzhou 730020 Lanzhou University, Lanzhou 73（}000 Haoshan Meteorological Service, Shanghai 201901 （Received February 28, 2011; in final form September 30, 2011）
Loess Plateau, water budget imbalance over land surface, water resources, evapotranspiration
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0894-0525
2191-4788
DOI:10.1007/s13351-011-0607-5