Effects of thinning on flow peaks in a forested headwater catchment in western japan

Haotian Sun, Tamao Kasahara, Kyoichi Otsuki, Makiko Tateishi, Takami Saito, Yuichi Onda

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

This study examined the changes in rainfall-runoffcharacteristics in the year prior to and after intensive thinning of 50% in number in a steep headwater catchment, covered with 46-year-old Japanese cedar and cypress in western Japan. The magnitude of event peak flow, event quick flow, event water yield, and event response time did not change after thinning. Because 70% of rainfall events had multiple flow peaks, relationships between each flow peak and the rainfall just prior to that peak were also analyzed. The increases in accumulated quick flow, flow rise and flow drop were significant after thinning. The flow drop following each flow peak increased, and led to a lower initial flow in subsequent peaks, resulting in no increase in peak size. The flow peaks in events with over 30 mm rainfall amount and over 2 mm/h average rainfall intensity showed significant increases in flow peak, flow rise, flow drop, and accumulated quick flow, which suggests that the catchment exhibited more shallow flow paths during large rainfall amounts after thinning. No changes were identified using event-based analysis, but changes in flow peaks were detected, which indicates the importance of examining all flow peaks when investigating rainfall-runoffcharacteristics of headwater catchments.

Original languageEnglish
Article number446
JournalWater (Switzerland)
Volume9
Issue number6
DOIs
Publication statusPublished - Jan 1 2017

Fingerprint

Cupressus
Cryptomeria
forested watersheds
peak flow
headwater
Catchments
Reaction Time
thinning
Rain
Japan
catchment
Water
event
rainfall
rain
effect
water yield
precipitation intensity
water

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Geography, Planning and Development
  • Aquatic Science
  • Water Science and Technology

Cite this

Effects of thinning on flow peaks in a forested headwater catchment in western japan. / Sun, Haotian; Kasahara, Tamao; Otsuki, Kyoichi; Tateishi, Makiko; Saito, Takami; Onda, Yuichi.

In: Water (Switzerland), Vol. 9, No. 6, 446, 01.01.2017.

Research output: Contribution to journalArticle

Sun, Haotian ; Kasahara, Tamao ; Otsuki, Kyoichi ; Tateishi, Makiko ; Saito, Takami ; Onda, Yuichi. / Effects of thinning on flow peaks in a forested headwater catchment in western japan. In: Water (Switzerland). 2017 ; Vol. 9, No. 6.
@article{913ac743382949b48964c6a592fc7383,
title = "Effects of thinning on flow peaks in a forested headwater catchment in western japan",
abstract = "This study examined the changes in rainfall-runoffcharacteristics in the year prior to and after intensive thinning of 50{\%} in number in a steep headwater catchment, covered with 46-year-old Japanese cedar and cypress in western Japan. The magnitude of event peak flow, event quick flow, event water yield, and event response time did not change after thinning. Because 70{\%} of rainfall events had multiple flow peaks, relationships between each flow peak and the rainfall just prior to that peak were also analyzed. The increases in accumulated quick flow, flow rise and flow drop were significant after thinning. The flow drop following each flow peak increased, and led to a lower initial flow in subsequent peaks, resulting in no increase in peak size. The flow peaks in events with over 30 mm rainfall amount and over 2 mm/h average rainfall intensity showed significant increases in flow peak, flow rise, flow drop, and accumulated quick flow, which suggests that the catchment exhibited more shallow flow paths during large rainfall amounts after thinning. No changes were identified using event-based analysis, but changes in flow peaks were detected, which indicates the importance of examining all flow peaks when investigating rainfall-runoffcharacteristics of headwater catchments.",
author = "Haotian Sun and Tamao Kasahara and Kyoichi Otsuki and Makiko Tateishi and Takami Saito and Yuichi Onda",
year = "2017",
month = "1",
day = "1",
doi = "10.3390/w9060446",
language = "English",
volume = "9",
journal = "Water (Switzerland)",
issn = "2073-4441",
publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",
number = "6",

}

TY - JOUR

T1 - Effects of thinning on flow peaks in a forested headwater catchment in western japan

AU - Sun, Haotian

AU - Kasahara, Tamao

AU - Otsuki, Kyoichi

AU - Tateishi, Makiko

AU - Saito, Takami

AU - Onda, Yuichi

PY - 2017/1/1

Y1 - 2017/1/1

N2 - This study examined the changes in rainfall-runoffcharacteristics in the year prior to and after intensive thinning of 50% in number in a steep headwater catchment, covered with 46-year-old Japanese cedar and cypress in western Japan. The magnitude of event peak flow, event quick flow, event water yield, and event response time did not change after thinning. Because 70% of rainfall events had multiple flow peaks, relationships between each flow peak and the rainfall just prior to that peak were also analyzed. The increases in accumulated quick flow, flow rise and flow drop were significant after thinning. The flow drop following each flow peak increased, and led to a lower initial flow in subsequent peaks, resulting in no increase in peak size. The flow peaks in events with over 30 mm rainfall amount and over 2 mm/h average rainfall intensity showed significant increases in flow peak, flow rise, flow drop, and accumulated quick flow, which suggests that the catchment exhibited more shallow flow paths during large rainfall amounts after thinning. No changes were identified using event-based analysis, but changes in flow peaks were detected, which indicates the importance of examining all flow peaks when investigating rainfall-runoffcharacteristics of headwater catchments.

AB - This study examined the changes in rainfall-runoffcharacteristics in the year prior to and after intensive thinning of 50% in number in a steep headwater catchment, covered with 46-year-old Japanese cedar and cypress in western Japan. The magnitude of event peak flow, event quick flow, event water yield, and event response time did not change after thinning. Because 70% of rainfall events had multiple flow peaks, relationships between each flow peak and the rainfall just prior to that peak were also analyzed. The increases in accumulated quick flow, flow rise and flow drop were significant after thinning. The flow drop following each flow peak increased, and led to a lower initial flow in subsequent peaks, resulting in no increase in peak size. The flow peaks in events with over 30 mm rainfall amount and over 2 mm/h average rainfall intensity showed significant increases in flow peak, flow rise, flow drop, and accumulated quick flow, which suggests that the catchment exhibited more shallow flow paths during large rainfall amounts after thinning. No changes were identified using event-based analysis, but changes in flow peaks were detected, which indicates the importance of examining all flow peaks when investigating rainfall-runoffcharacteristics of headwater catchments.

UR - http://www.scopus.com/inward/record.url?scp=85021334136&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85021334136&partnerID=8YFLogxK

U2 - 10.3390/w9060446

DO - 10.3390/w9060446

M3 - Article

AN - SCOPUS:85021334136

VL - 9

JO - Water (Switzerland)

JF - Water (Switzerland)

SN - 2073-4441

IS - 6

M1 - 446

ER -