TITLE:
Analysis of Runoff into Reservoir Change Pattern and Causes in Fenhe Reservoir
AUTHORS:
Caihong Hu, Zhihua Zhang, Nan Li
KEYWORDS:
Annual Runoff, Trend, Cycle Period, Mutation, Analysis of the Cause of Runoff Change
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.4 No.7,
July
30,
2016
ABSTRACT:
Based on the 58
years monthly flow data (from 1956 to 2013) editing by Jingle hydrological station
of Fen River and Shangjinyou station, data resources are used to analyze the
annual and inter-annual changes from spatial and temporal scale by statistical
methods, mainly annual spatial and temporal distribution, trend of inter-annual
changes, cycle and mutation changes. The reasons of runoff into reservoir
changes are deeply analyzed by annual precipitation data of catchments above
Fenhe Reservoir 1956 to 2013 and the land and water reservation methods which
are implemented recently. It shows that there is a significant decrease of the
inter-annual run-off with main and second cycle periods, 23a and 13a
respectively. Furthermore, it exists mutation point between 1970 and 1971
through runoff series. As for further analysis of the causes of Fenhe Reservoir
runoff changes, it illustrates that the change of precipitation is the main
reason the facilitate runoff changes. Also, the land and water reservation
methods which are implemented in upstream of Fenhe Reservoir increase water
storage capacity of soil, showing it non-ignorable effect to runoff changes.