Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 1114-1130 |
| Journal | Hydrological sciences journal |
| Volume | 62 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 25 Apr 2017 |
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Keywords
- METIS-322153
- ITC-ISI-JOURNAL-ARTICLE
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Impact of forest degradation on streamflow regime and runoff response to rainfall in the Garhwal Himalaya, Northwest India. / Qazi, N.U.Q.; Bruijnzeel, L.A.; Rai, S.P.; Ghimire, C.P.
In: Hydrological sciences journal, Vol. 62, No. 7, 25.04.2017, p. 1114-1130.Research output: Contribution to journal › Article › Academic › peer-review
TY - JOUR
T1 - Impact of forest degradation on streamflow regime and runoff response to rainfall in the Garhwal Himalaya, Northwest India
AU - Qazi, N.U.Q.
AU - Bruijnzeel, L.A.
AU - Rai, S.P.
AU - Ghimire, C.P.
PY - 2017/4/25
Y1 - 2017/4/25
N2 - Baseflows have declined for decades in the Lesser Himalaya but the causes are still debated. This paper compares variations in streamflow response over three years for two similar headwater catchments in northwest India with largely undisturbed (Arnigad) and highly degraded (Bansigad) oak forest. Hydrograph analysis suggested no catchment leakage, thereby allowing meaningful comparisons. The mean annual runoff coefficient for Arnigad was 54% (range 44–61%) against 62% (53–69%) at Bansigad. Despite greater total runoff Qt (by 250 mm year–1), baseflow at Bansigad ceased by March, but was perennial at Arnigad (making up 90% of Qt vs. 51% at Bansigad). Arnigad storm flows, Qs, were modest (8–11% of Qt) and occurred mostly during monsoons (78–98%), while Qs at Bansigad was 49% of Qt and occurred also during post-monsoon seasons. Our results underscore the importance of maintaining soil water retention capacity after forest removal to maintain baseflow levels.
AB - Baseflows have declined for decades in the Lesser Himalaya but the causes are still debated. This paper compares variations in streamflow response over three years for two similar headwater catchments in northwest India with largely undisturbed (Arnigad) and highly degraded (Bansigad) oak forest. Hydrograph analysis suggested no catchment leakage, thereby allowing meaningful comparisons. The mean annual runoff coefficient for Arnigad was 54% (range 44–61%) against 62% (53–69%) at Bansigad. Despite greater total runoff Qt (by 250 mm year–1), baseflow at Bansigad ceased by March, but was perennial at Arnigad (making up 90% of Qt vs. 51% at Bansigad). Arnigad storm flows, Qs, were modest (8–11% of Qt) and occurred mostly during monsoons (78–98%), while Qs at Bansigad was 49% of Qt and occurred also during post-monsoon seasons. Our results underscore the importance of maintaining soil water retention capacity after forest removal to maintain baseflow levels.
KW - METIS-322153
KW - ITC-ISI-JOURNAL-ARTICLE
UR - http://ezproxy.utwente.nl:2048/login?url=https://webapps.itc.utwente.nl/library/2017/isi/ghimire_imp.pdf
U2 - 10.1080/02626667.2017.1308637
DO - 10.1080/02626667.2017.1308637
M3 - Article
VL - 62
SP - 1114
EP - 1130
JO - Hydrological sciences journal
JF - Hydrological sciences journal
SN - 0262-6667
IS - 7
ER -