Modelling and mapping topographic variations in forest soils at high resolution: A case study

Murphy, Paul; Ogilvie, Jae; Meng, Fan‐Rui; White, Barry; Bhatti, Jagtar S.; Arp, Paul A.

doi:10.1016/j.ecolmodel.2011.01.003

Cited by 113 publications

(114 citation statements)

References 64 publications

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“…The optimal size of CA was also dependent on the response variable (application) [24]. Murphy et al [19] found that the strongest relationship between soil properties and DTW was at the lowest tested CA. Different strengths of relationships between SI and the DTW index was found for different species (Figure 3).…”

Section: Discussionmentioning

confidence: 99%

“…Murphy et al [18] found that DTW could delineate patterns of soil moisture (hydric to subhygric soil moisture regimes) in Central Alberta, and suggested usage of DTW for landscapes where belowground flow patterns are driven by surface topography. In addition, detailed physical and chemical soil properties, as well as soil, vegetation, and drainage type are found to be subject to topographic controls, and DTW with a 4 ha CA effectively estimated these in the Foothills Natural Region of Alberta [19]. In the Swedish boreal landscape DTW has been shown to be a good predictor of soil wetness, and while it was insensitive to the DEM scale, the optimal CA threshold varied by landform (from 1-2 ha on slowly permeable till deposits to 8-16 ha on coarse-textured deposits where water would drain quickly) [20].…”

Section: Introductionmentioning

confidence: 99%

“…A catchment area (CA) of 4 ha has been applied across varying terrains in Alberta and is thought that associated cartographic derived indices represent end-of-summer flow and soil conditions [17]. Once the flow channel network is determined the depth-to-water (DTW) index is computed by assigning a value of zero to flow channel cells and all other surface water features, and then applying the algorithm, which calculates the sum of cell slopes along the least slope path to the nearest surface water feature for each raster cell [19].…”

Section: Introductionmentioning

confidence: 99%

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High Resolution Site Index Prediction in Boreal Forests Using Topographic and Wet Areas Mapping Attributes

Bjelanovic

Comeau

White

2018

Forests

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Abstract:The purpose of this study was to evaluate the relationships between environmental factors and the site index (SI) of trembling aspen, lodgepole pine, and white spruce based on the sampling of temporary sample plots. LiDAR generated digital elevation models (DEM) and wet areas mapping (WAM) provided data at a 1 m resolution for the study area in Alberta. Six different catchment areas (CA), ranging from 0.5 ha to 10 ha, were tested to reveal optimal CA for calculation of the depth-to-water (DTW) index from WAM. Using different modeling methods, species-specific SI models were developed for three datasets: (1) topographic and wet area variables derived from DEM and WAM, (2) only WAM variables, and (3) field measurements of soil and topography. DTW was selected by each statistical method for each species and, in most cases, DTW was the strongest predictor in the model. In addition, differences in strength of relationships were found between species. Models based on remotely-sensed information predicted SI with a root mean squared error (RMSE) of 1.6 m for aspen and lodgepole pine, and 2 m for white spruce. This approach appears to adequately portray the variation in productivity at a fine scale and is potentially applicable to forest growth and yield modeling and silviculture planning.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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High Resolution Site Index Prediction in Boreal Forests Using Topographic and Wet Areas Mapping Attributes

Bjelanovic

Comeau

White

2018

Forests

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“…[23]). In addition, these maps provide a means 1) to assist in sizing and designing existing or contemplated bridge and culvert instal- For the mining purpose, the maps in Figure 5 and Figure 6 and their associated data layers could be used: For land-use planning purposes, the maps in Figures 4-7 form the basis for high-resolution soil drainage mapping [2]. In this, the DTW component in Figure 7 can be used for optimizing crop productivities in agriculture and forestry by accounting for local in-field soil wetness and dryness variations, with emphasis on selecting areas that are, e.g., best for wet-area farming practices, wetland and wildlife conservation, and/or stormwater management.…”

Section: Discussionmentioning

confidence: 99%

“…The purpose of this article is to show how the wet-areas modelling and mapping process (WAM [2] [3]) can be a useful addition to plan and assess the hydrological viability of residential, agricultural and mining developments. This is done by way of a case study focused on the Los Pelambres Cu mining activities east of Salamanca in the Coquimbo Region of Chile ( Figure 1).…”

Section: Introductionmentioning

confidence: 99%

Digitally Mapping the Hydro-Topographical Context for Community Planning: A Case Study for the Upper Choapa River Watershed in Chile

Moran¹,

Cuadra²,

Gonzalez³

et al. 2017

GEP

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Urban and non-urban settlements in many regions are usually located on the lands bordering shores, rivers, canals or streams. However, housing complexes, landfills, and areas for agriculture and mining are often assigned to locations without sufficiently detailed hydrographic information about subsequent potential if not actual flow and flooding impacts. Yet, for sustainable community planning with emphasis on harmonizing social, economic, environmental and institutional aspects, such information is essential. This article demonstrates how this need can in part be accommodated by way of digital elevation and wet-area modelling and mapping using the upper component of the Choapa watershed in Chile as a case study. The terrain of this area has sharply incised valleys, with communities, fields and roads strung narrowly along the Choapa River and its tributaries. Above these locations along the Estero de Los Pelambres near the Chile-Argentina border are major mining and mineral refining activities. This article provides modelling and mapping details about the wet-to-moist area zonation along the upper Choapa River valleys, and addresses some of the mining-induced changes from 2000 to 2010.

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Cost of riparian buffer zones: A comparison of hydrologically adapted site‐specific riparian buffers with traditional fixed widths

Tiwari

Lundström

Kuglerová

et al. 2016

Water Resources Research

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Traditional approaches aiming at protecting surface waters from the negative impacts of forestry often focus on retaining fixed width buffer zones around waterways. While this method is relatively simple to design and implement, it has been criticized for ignoring the spatial heterogeneity of biogeochemical processes and biodiversity in the riparian zone. Alternatively, a variable width buffer zone adapted to site-specific hydrological conditions has been suggested to improve the protection of biogeochemical and ecological functions of the riparian zone. However, little is known about the monetary value of maintaining hydrologically adapted buffer zones compared to the traditionally used fixed width ones. In this study, we created a hydrologically adapted buffer zone by identifying wet areas and groundwater discharge hotspots in the riparian zone. The opportunity cost of the hydrologically adapted riparian buffer zones was then compared to that of the fixed width zones in a meso-scale boreal catchment to determine the most economical option of designing riparian buffers. The results show that hydrologically adapted buffer zones were cheaper per hectare than the fixed width ones when comparing the total cost. This was because the hydrologically adapted buffers included more wetlands and low productive forest areas than the fixed widths. As such, the hydrologically adapted buffer zones allows more effective protection of the parts of the riparian zones that are ecologically and biogeochemically important and more sensitive to disturbances without forest landowners incurring any additional cost than fixed width buffers.

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Modelling and mapping topographic variations in forest soils at high resolution: A case study

Cited by 113 publications

References 64 publications

High Resolution Site Index Prediction in Boreal Forests Using Topographic and Wet Areas Mapping Attributes

High Resolution Site Index Prediction in Boreal Forests Using Topographic and Wet Areas Mapping Attributes

Digitally Mapping the Hydro-Topographical Context for Community Planning: A Case Study for the Upper Choapa River Watershed in Chile

Cost of riparian buffer zones: A comparison of hydrologically adapted site‐specific riparian buffers with traditional fixed widths

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