scholarly journals Organic Matter Modeling at the Landscape Scale Based on Multitemporal Soil Pattern Analysis Using RapidEye Data

2015 ◽  
Vol 7 (9) ◽  
pp. 11125-11150 ◽  
Author(s):  
Gerald Blasch ◽  
Daniel Spengler ◽  
Sibylle Itzerott ◽  
Gerd Wessolek
Keyword(s):  
Organic Matter ◽  
Pattern Analysis ◽  
Landscape Scale ◽  
Soil Pattern

Accumulation patterns of soil organic matter in forests as a legacy of historical charcoal burning

2021 ◽  
Author(s):  
Anna Schneider ◽  
Alexander Bonhage ◽  
Florian Hirsch ◽  
Alexandra Raab ◽  
Thomas Raab
Keyword(s):  
Land Use ◽  
Organic Matter ◽  
Soil Organic Matter ◽  
Large Scale ◽  
Soil Surface ◽  
Landscape Scale ◽  
Legacy Effects ◽  
Charcoal Production ◽  
Study Region ◽  
Land Use Legacies

<p>Human land use and occupation often lead to a high heterogeneity of soil stratigraphy and properties in landscapes within small, clearly delimited areas. Legacy effects of past land use also are also abundant in recent forest areas. Although such land use legacies can occur on considerable fractions of the soil surface, they are hardly considered in soil mapping and inventories. The heterogenous spatial distribution of land use legacy soils challenges the quantification of their impacts on the landscape scale. Relict charcoal hearths (RCH) are a widespread example for the long-lasting effect of historical land use on soil landscapes in forests of many European countries and also northeastern USA. Soils on RCH clearly differ from surrounding forest soils in their stratigraphy and properties, and are most prominently characterized by a technogenic substrate layer with high contents of charcoal. The properties of RCH soils have recently been studied for several regions, but their relevance on the landscape scale has hardly been quantified.</p><p>We analyse and discuss the distribution and ecological relevance of land use legacy soils across scales for RCH in the state of Brandenburg, Germany, with a focus on soil organic matter (SOM) stocks. Our analysis is based on a large-scale mapping of RCH from digital elevation models (DEM), combined with modelled SOM stocks in RCH soils. The distribution of RCH soils in the study region shows heterogeneity at different scales. The large-scale variation is related to the concentration of charcoal production to specific forest areas and the small-scale accumulation pattern is related to the irregular distribution of single RCH within the charcoal production fields. Considerable fractions of the surface area are covered by RCH soils in the major charcoal production areas within the study region. The results also show that RCH can significantly contribute to the soil organic matter stocks of forests, even for areas where they cover only a small fraction of the soil surface. The study highlights that considering land use legacy effects can be relevant for the results of soil mapping and inventories; and that prospecting and mapping land use legacies from DEM can contribute to improving such approaches.</p>

scholarly journals Multitemporal soil pattern analysis with multispectral remote sensing data at the field-scale

2015 ◽  
Vol 113 ◽  
pp. 1-13 ◽  
Author(s):  
Gerald Blasch ◽  
Daniel Spengler ◽  
Christian Hohmann ◽  
Carsten Neumann ◽  
Sibylle Itzerott ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Pattern Analysis ◽  
Remote Sensing Data ◽  
Field Scale ◽  
Sensing Data ◽  
Multispectral Remote Sensing ◽  
Soil Pattern

scholarly journals Landscape-scale regulators of water transparency in mountain lakes: implications of projected glacial loss

2018 ◽  
Vol 75 (7) ◽  
pp. 1169-1176 ◽  
Author(s):  
Mark H. Olson ◽  
Janet M. Fischer ◽  
Craig E. Williamson ◽  
Erin P. Overholt ◽  
Nora Theodore
Keyword(s):  
Organic Matter ◽  
Rocky Mountains ◽  
Chlorophyll A Fluorescence ◽  
Landscape Scale ◽  
Mountain Lakes ◽  
Water Transparency ◽  
Chromophoric Dissolved Organic Matter ◽  
Canadian Rocky Mountains ◽  
Lake Ecosystems ◽  
Active Radiation

We examined factors regulating water transparency in a set of 33 lakes located in the Canadian Rocky Mountains. Eighteen lakes had catchments that included glaciers and 15 did not. In each lake, we quantified midsummer attenuation rates for three ultraviolet wavelengths and photosynthetically active radiation and measured chromophoric dissolved organic matter (CDOM) absorbance, turbidity, and chlorophyll a fluorescence. We also used GIS to quantify characteristics of lake catchments. Across lakes, turbidity and CDOM absorbance were arrayed on orthogonal gradients that intersected in a region of low turbidity and low CDOM absorbance. Nonglacially fed lakes had low turbidity and attenuation rates were regulated by CDOM absorbance, which increased with the percentage of the catchment covered by vegetation. Glacially fed lakes had low CDOM absorbance and attenuation rates increased with turbidity, which increased with the percentage of the catchment covered by permanent ice. Glaciers are retreating rapidly in the Canadian Rockies. As catchments become deglaciated, turbidity will likely decrease and the regulator of lake transparency is likely to switch to CDOM, which will have broad implications for lake ecosystems.

scholarly journals Landscape scale patterns in the character of natural organic matter in a Swedish boreal stream network

2009 ◽  
Vol 13 (9) ◽  
pp. 1567-1582 ◽  
Author(s):  
J. Temnerud ◽  
A. Düker ◽  
S. Karlsson ◽  
B. Allard ◽  
S. Köhler ◽  
...  
Keyword(s):  
Organic Matter ◽  
Spatial Variation ◽  
Humic Substances ◽  
Natural Organic Matter ◽  
Common Factor ◽  
Landscape Scale ◽  
Least Squares Regression ◽  
Stream Network ◽  
Channel Network ◽  
Vis Spectroscopy

Abstract. This paper defines landscape-scale patterns in the character of natural organic matter (NOM) and tests for relationships to catchment soil, vegetation and topography. The drainage network of a boreal catchment, subcatchment size 0.12–78 km2, in Northern Sweden was sampled in August 2002 during a period of stable low water flow. The NOM was characterized with UV/Vis spectroscopy, fluorescence, XAD-8 fractionation (%humic substances), gel permeation chromatography (apparent molecular weight), and elemental composition (C:N). The largest spatial variation was found for C:N, absorbance ratio, and specific visible absorptivity. The lowest variation was in fluorescence index, %humic substances and molecular retention time. The variation in total organic carbon (TOC), iron and aluminium concentration was more than twice that of C:N. Between headwater and downstream sites no significant changes were distinguished in the NOM character. At stream reaches, junctions and lakes little change (<10%) in NOM character was observed. Common factor analysis and partial least squares regression (PLS) revealed that the spatial variation in surface coverage of lakes and mires could explain some of the variation of TOC and NOM character. Our suggestion is that the mosaic of landscape elements (different amounts of water from lakes, forest soil and mires) delivers NOM with varying characteristics to a channel network that mixes conservatively downstream, with possible small changes at some stream reaches, junctions and lakes.

scholarly journals Effects of Earthworms on Soil Organic Matter and Nutrient Dynamics at a Landscape Scale over Decades

2004 ◽  
pp. 145-160 ◽  
Author(s):  
Jean Andre ◽  
Cécile Villenave ◽  
Fabienne Charpentier ◽  
Nicolas Bernier ◽  
Patrick Lavelle ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Nutrient Dynamics ◽  
Landscape Scale

scholarly journals Integrating Aquatic and Terrestrial Perspectives to Improve Insights Into Organic Matter Cycling at the Landscape Scale

2019 ◽  
Vol 7 ◽  
Author(s):  
Zachary E. Kayler ◽  
Katrin Premke ◽  
Arthur Gessler ◽  
Mark O. Gessner ◽  
Christian Griebler ◽  
...  
Keyword(s):  
Organic Matter ◽  
Landscape Scale ◽  
Organic Matter Cycling

scholarly journals Landscape scale patterns in the character of natural organic matter in a Swedish boreal stream network

2009 ◽  
Vol 6 (2) ◽  
pp. 3261-3299 ◽  
Author(s):  
J. Temnerud ◽  
A. Düker ◽  
S. Karlsson ◽  
B. Allard ◽  
S. Köhler ◽  
...  
Keyword(s):  
Organic Matter ◽  
Spatial Variation ◽  
Humic Substances ◽  
Natural Organic Matter ◽  
Common Factor ◽  
Landscape Scale ◽  
Least Squares Regression ◽  
Stream Network ◽  
Channel Network ◽  
Vis Spectroscopy

Abstract. This paper defines landscape-scale patterns in the character of natural organic matter (NOM) and tests for relationships to catchment soil, vegetation and topography. The drainage network of a boreal catchment, subcatchment size 0.12–78 km2, in Northern Sweden was sampled in August 2002 during a period of stable low water flow. The NOM was characterized with UV/Vis spectroscopy, fluorescence, XAD-8 fractionation (%humic substances), gel permeation chromatography (apparent molecular weight), and elemental composition (C:N). The largest spatial variation was found for C:N, absorbance ratio, and specific visible absorptivity. The lowest variation was in fluorescence index, %humic substances and molecular retention time. But the variation in total organic carbon (TOC), iron and aluminium concentration was more than twice that of C:N. Between headwater and downstream sites no significant changes were distinguished in the NOM character. At stream reaches, junctions and lakes little change (<10%) in NOM character was observed. Common factor analysis and partial least squares regression (PLS) revealed that the spatial variation in surface coverage of lakes and mires could explain some of the variation of TOC and NOM character. Our suggestion is that the mosaic of landscape elements (different amounts of water from lakes, forest soil and mires) delivers NOM with varying characteristics to a channel network that mixes conservatively downstream, with possible small changes at some stream reaches, junctions and lakes.

Cesium-137-measured erosion rates for soils of five parent-material groups in southwestern Saskatchewan

1995 ◽  
Vol 75 (2) ◽  
pp. 205-210 ◽  
Author(s):  
D. J. Pennock ◽  
E. de Jong ◽  
D. S. Lemmen
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Soil Loss ◽  
Landscape Scale ◽  
Parent Material ◽  
Glacial Till ◽  
Scale Analysis ◽  
Wide Spread ◽  
Erosion Rates ◽  
Cesium 137

Despite the wide-spread perception that the soils of southwestern Saskatchewan are particularly erosion prone, few observations have been made on soil loss in this area. We used 137Cs redistribution to examine rates of soil loss associated with five parent-material groups in this area. Five sites were sampled in each parent-material group: one uncultivated site and four cultivated sites. Ten samples were taken at each site from landscape positions that have been shown in previous studies to have the highest rates of soil loss. The highest rates (median soil loss of −30 t ha−1 yr−1) were associated with glacial till landscapes; medium (−21 t ha−1 yr−1) but highly variable rates of loss, with coarse sandy glaciofluvial–lacustrine landscapes; and lower and consistent losses of around −12 t ha−1 yr−1, with silty glaciolacustrine and aeolian landscapes and with fine sandy glaciofluvial–lacustrine landscapes. The observed rates of loss can be used to calibrate models of geomorphic instability for this area. Key words: Soil erosion, soil quality, landscape-scale analysis, soil organic matter

Sign in / Sign up

Export Citation Format

Share Document