Spatially significant effects of selective tropical forestry on water, nutrient and sediment flows: a modelling-supported review

Chappell, Nick A.; Tych, Włodek; Yusop, Zulkifli; Rahim, N. Abdul; Kasran, Baharuddin

doi:10.1017/cbo9780511535666.027

Cited by 14 publications

(58 citation statements)

References 54 publications

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“…This area is the focus of a major ecological research programme (Marshall and Swaine, 1992;Newbery et al, 2000), and the new work aims to complement recent modelling work on longer-term (e.g. interannual) variations in rainfall and associated ecological and hydrological processes within Borneo Island (Walsh, 1996;Douglas et al, 1999;Chappell et al, 2001Chappell et al, , 2004bTangang, 2001).…”

Section: Introductionmentioning

confidence: 99%

“…The 5 km 2 study region selected (5°01 0 N and 117°48Ð75 0 E) is 50 km inland from the eastern coast of Sabah, and contains the core study areas of the rainforest research station called the Danum Valley Field Centre (DVFC; Figure 1). The DVFC locality forms the focus of ongoing hydrological research on rainfall, throughfall and wet-canopy evaporation (Chappell et al, 2001;Chappell and Tych, 2002;Bidin andChappell, 2003, 2004), soil-water regulation of landscape ecology (Gibbons and Newbery, 2003), streamflow generation mechanisms (Chappell et al, 1998;Chappell and Sherlock, 2005), rainfall-runoff modelling (Chappell et al, 1998(Chappell et al, , 2004b and erosion Chappell et al, 2004a;Walsh et al, 2006). All of this work could be advanced with a better understanding of the temporal characteristics of rainfall within experimental catchments.…”

Section: Introductionmentioning

confidence: 99%

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Characteristics of rain events at an inland locality in northeastern Borneo, Malaysia

Bidin

Chappell

2006

Hydrol. Process.

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Abstract:Understanding the intensity and duration of tropical rain events is critical to modelling the rate and timing of wetcanopy evaporation, the suppression of transpiration, the generation of infiltration-excess overland flow and hence to erosion, and to river responsiveness. Despite this central role, few studies have addressed the characteristics of equatorial rainstorms. This study analyses rainfall data for a 5 km 2 region largely comprising of the 4 km 2 Sapat Kalisun Experimental Catchment in the interior of northeastern Borneo at sampling frequencies from 1 min 1 to 1 day1 . The work clearly shows that most rainfall within this inland, forested area is received during regular short-duration events (<15 min) that have a relatively low intensity (i.e. less than two 0Ð2 mm rain-gauge tips in almost all 5 min periods). The rainfall appears localized, with significant losses in intergauge correlations being observable in minutes in the case of the typical mid-afternoon, convective events. This suggests that a dense rain-gauge network, sampled at a high temporal frequency, is required for accurate distributed rainfall-runoff modelling of such small catchments. Observed rain-event intensity is much less than the measured infiltration capacities, and thus supports the tenet of the dominance of quick subsurface responses in controlling river behaviour in this small equatorial catchment.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Characteristics of rain events at an inland locality in northeastern Borneo, Malaysia

Bidin

Chappell

2006

Hydrol. Process.

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“…They also affect the moisture status of soils in time and space and, thereby, the natural distribution of plants (Gibbons and Newbery 2003) and the agricultural productivity of soils (Baron et al 1998). Further, they affect the migration of nutrients which affect soil edaphic status, plant distribution, and river water quality; this is particularly important where land-use change accelerates the loss of nutrients from soils to rivers (Chappell et al 2004c). The movement of other solutes, such as agricultural pesticides and leaking industrial wastes, through soils and rocks towards rivers is similarly regulated by water pathways (Racke et al 1997).…”

Section: D2mentioning

confidence: 99%

“…These hillslope experiments have been conducted at South Creek, Australia (Bonell and Gilmour 1978;Bonell et al 1981Bonell et al , 1983, Reserva Ducke, Brazil (Nortcliff and Thornes 1981), Fazenda Dimona, Brazil (Hodnett et al 1997), Ulu Belalong, Brunei (Dykes and Thornes 2000), Bukit Tarek, Peninsular Malaysia (Noguchi et al 1997), Danum, East Malaysia (Sinun et al1992;Chappell et al 1998Chappell et al , 1999aChappell et al ,b, 2004cChappell and Sherlock 2005), Luquillo, Puerto Rico (Schellekens 2000), Lutz Creek, Panama (Godsey et al 2004;Kinner and Stallard 2004), La Cuenca, Peru (Elsenbeer and Lack 1996), and Bukit Timah, Singapore (Sherlock et al 1995(Sherlock et al , 2000Chappell and Sherlock 2005). Others have attempted to generalise the runoff pathways illustrated in these studies (Chappell and Ternan 1992;Elsenbeer 2001;Bonell 2004), particularly in the upper layers of the ground; we attempt to add to this work.…”

Section: D2mentioning

confidence: 99%

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Runoff Processes in Southeast Asia: Role of Soil, Regolith, and Rock Type

Chappell

Sherlock

Bidin

et al.

Forest Environments in the Mekong River Basin

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Sources of suspended sediment within a tropical catchment recovering from selective logging

Chappell

Douglas

Hanapi

et al. 2004

Hydrological Processes

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Abstract:Quantification of the source of suspended sediments generated by selective forestry activities is central to the development of sustainable forestry guidelines. This assessment is hampered by a dearth of available studies, particularly from the tropics. This study involved the monitoring (at 10 s intervals) of surface discharge and turbidity from 15 contributory areas of a 44 ha catchment. The catchment is located within lowland dipterocarp rain forest on Borneo Island, in a region recovering from the first episode of selective timber removal that took place some 5 years previously. Both the within-storm dynamics of the sediment flux and the time-integrated sediment yields were analysed to link the source landforms to the catchment behaviour.A 10 year rainfall event of 167 mm occurred during the monitoring period and triggered a debris slide and several log-culvert collapses along the area's main timber haulage road. The sampling design captured this event's dynamics and allowed lumped catchment response to be traced to the new landforms. During the 1 day period of the 10 year event, some 33 t of suspended sediment were transported from one debris slide, comprising a significant proportion of the 105 t discharging from the whole catchment, which itself constituted 40% of the annual yield of 592 t km 2 . The contributory areas with only ephemeral waterflows, including former haulage roads and tracks, generated relatively little sediment during this 10 year event or in other storms. This work suggests that though some sediment sources recover from the impacts of forest road construction and harvesting, collapse of roadfill materials or more local log-culvert failure persists for several years after harvesting. Sustainable forestry guidelines that do not focus on ameliorating these persistent instabilities may not significantly mitigate the geomorphic impacts of conventional, selective harvesting.

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Spatially significant effects of selective tropical forestry on water, nutrient and sediment flows: a modelling-supported review

Cited by 14 publications

References 54 publications

Characteristics of rain events at an inland locality in northeastern Borneo, Malaysia

Characteristics of rain events at an inland locality in northeastern Borneo, Malaysia

Runoff Processes in Southeast Asia: Role of Soil, Regolith, and Rock Type

Sources of suspended sediment within a tropical catchment recovering from selective logging

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