This paper analyzed evolutionary features of annual runoff of the Nenjiang River Basin during the 45 years between 1956 and 2000, by applying random hydrologic method.The research indicated that hydrologic cycle of runoff in the basin was 32 years.On the whole, there existed no apparent runoff trend within the 45 years.Furthermore, the paper also studied consumable water usage of the basin, and it showed that the general impact extent of mankind water consumption to basin water cycle was 5%, but it varied greatly within the basin, such as the case of the Tao’er River Basin, rising to as high as 16%, showing greater mankind water consumption there.In terms of annual runoff analysis, impact factor during the 1970s in the whole basin was higher than any other decades, reflecting the fact that mankind water consumption exerted greater impact on water cycle during low flow period.
TANG Yun, WANG Hao, YAN Deng-hua, TANG Ke-wang
. Evolutionary Regularity of Runoff of Nenjiang River Basin in Period 1956-2000[J]. SCIENTIA GEOGRAPHICA SINICA, 2009
, 29(6)
: 864
-868
.
DOI: 10.13249/j.cnki.sgs.2009.06.864
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