[1]GUO Jinchuan,LIANG Hongwen,PAN Wei,et al.Preliminary Study on the Runoff and Its Processes of Two Kinds of Forest Watersheds[J].Research of Soil and Water Conservation,2015,22(06):55-59.
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Preliminary Study on the Runoff and Its Processes of Two Kinds of Forest Watersheds
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
22
Number of periods:
2015 06
Page number:
55-59
Column:
Public date:
2015-12-28
- Title:
- Preliminary Study on the Runoff and Its Processes of Two Kinds of Forest Watersheds
- Keywords:
- P. massoniana forest; Eucalyptus forest; watershed; runoff; runoff processes
- CLC:
- S715.3
- DOI:
- -
- Abstract:
- The runoff and runoff process of Eucalyptus and Pinus massoniana forest watersheds were investigated to provide guidance for scientific evaluation of water conservation capacities of forest. The runoff characters of Eucalyptus and P. massoniana forest watersheds were continuously monitored using the small watershed runoff monitoring method and the automatic data collection devices from August, 2013 to July, 2014, and effects of heavy rainfall and continuous rainfall on the runoff process were studied. We found that the annual runoff depth and the runoff coefficient of Eucalyptus forest watershed were 107.7 mm and 8.2%, respectively, while those of P. massoniana forest watershed were 319.4 mm and 24.2%, respectively. When there was no runoff, runoff duration, time lags, maximum runoff of rainfall, and runoff depth amounts caused by a heavy rainfall process (amounting to 147.5 mm) between the two kinds of forest watershed were significant different: those of Eucalyptus forest were 13.8 hours, 0.2 hours and 35.6 mm, respectively, while those of P. massoniana forest watershed were 35.5 hours, 0.7 hours and 28.5 mm, respectively. Eucalyptus forest watershed produced only 4-day runoff, and the runoff depth amounted to 3.8 mm with a 7 days continuous precipitation process of rainfall with 125.0 mm, while P. massoniana forest watershed produced continuously 13-day runoff, and the runoff depth was 10.1 mm. In conclusion, water conservation capacity of P. massoniana forest is much better than Eucalyptus forest.
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