geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Seasonal hydrologic response at various spatial scales in a small forested catchment, Hitachi Ohta, Japan


, : Seasonal hydrologic response at various spatial scales in a small forested catchment, Hitachi Ohta, Japan. Journal of hydrology 168(1-4): 227-250

Headwater catchments are important and often overlooked hydrologic components of drainage basins. Hydrologic response at different scales was evaluated during a period of increasing antecedent wetness in a steep, humid catchment in coastal Japan. Outflows from a second-order basin (EB, 15.7 ha), two first-order basins (B, 2.48 ha and A, 0.84 ha), a zero-order basin (0.25 ha), and a hillslope segment (0.0045 ha) were measured for nine individual storms prior to and during the typhoon season of 1992. Antecedent rainfall greatly influenced the dynamic contributions from various watershed components. During drier conditions at the beginning of the typhoon season, storm runoff was small (< 2.5% of rainfall), largely generated by contributions from the narrow riparian zone. As wetness increased, subsurface flow from a hillslope segment contributed 2.0-3.4 times the runoff (on a unit contributing area basis) as the entire forest basin B. At least the lower 20% of the hillslope appeared to contribute actively to subsurface stormflow during late season events with very wet antecedent conditions. During major storms with high antecedent moisture, macropore flow comprised more than 25% of total subsurface flow during the peak and recession limbs of hydrographs. Almost no macropore flow occurred during storms with dry antecedent conditions. Zero-order basins with shallow soils appear to contribute to stormflow once a threshold of saturation is reached: after this point these geomorphic hollows contribute similar magnitudes of flow (per unit area) as subsurface hillslope drainage. Water yields during the two largest storms (with wet antecedent conditions) were higher in basin EB (16.6-25.6%) than in basin B (11.6-19.5%), partly owing to reduced canopy interception in the cutover portion of EB. During the two smallest storms (dry antecedent conditions) the opposite pattern occurred, likely because of the limited contributing area of stormflow near the stream channel. The dynamic hydrologic contributions of the near-channel zone, hillslope soils, and zero-order basins with respect to antecedent moisture and storm intensity offer new insights into the variable source area concept of streamflow generation and supplement more recent streamflow generation studies based on tracer tests.

US$19.90

DOI: 10.1016/0022-1694(94)02639-s


Other references

Rambow D., 1976: The western extension of the Wickenrode Graben; northern Hesse. Geologisches Jahrbuch Hessen 104: 181-182

Dienstag, J.L., 2008: Hepatitis A: the vaccine dividend. Journal of Infectious Diseases 197(9): 1220-1222

Guallini, L.; Leali, L., 1959: Cell count in milk from cows with mastitis. II. Its importance. The differential cell count was made on 120 milk samples from bacteriologically and cyto-logically sound quarters during the first or fifth lactation and on 60 from infected quarters. In infected milk there was significant increase in degenerate (...

Weber, Ewald, 1997: Phenotypic variation of the introduced perennial Solidago gigantea in Europe. The exotic perennial Solidago gigantea belongs to the most widespread and abundant plant invaders in Europe, found throughout the range from northern Italy to southern Scandinavia. Morphological variation of this species in Europe was assessed by...

Costantini, E., 1953: Isonicotinic acid hydrazide in cavitary forms of pulmonary tuberculosis. Lotta Contro la Tubercolosi 23(10-11): 841-842

Jensen, J., 1986: More consumers are willing to pay higher price for quality healthcare. Modern Healthcare 16(17): 48-49

Jirasek, J.E., 1961: Cytochemical investigations of the human hypophysis in pregnancy. The pregnancy changes observed in this material at the time of confinement were: the appearance of pregnancy cells, increase of eosinophils, enlargement of basophils of the gonadotrope series, and degranulation of the basophilic cells of the corti...

Moriyoshi, Masaharu, 1997: Clinical study of breeding disorders and early pregnancy diagnosis in sows. The following investigation was carried out for the purpose of clarifying the current situation regarding breeding disorders in sows during the period from parturition to pregnancy, the most important period in breeding control, and for establishi...

Herdegen, T.; Zimmermann, M., 1994: Expression of c-Jun and JunD transcription factors represent specific changes in neuronal gene expression following axotomy. Progress in Brain Research 103: 153-171

D.C.sta, M.; Rothenberg, S.P., 1974: Appearance of a folate binder in leukocytes and serum of women who are pregnant or taking oral contraceptives. Journal of Laboratory and Clinical Medicine 83(2): 207-214