Formation of a Digital Elevation Model of Soil Moisture Adopted from Terrain Parameters and Forest Management Materials
Journal Title: Lesnoy Zhurnal (Russian Forestry Journal) - Year 2020, Vol 15, Issue 4
Abstract
The visibility of the spatial distribution of soil moisture is achieved through mapping, which is most simply carried out according to a digital model. Information on soil moisture is stored in the attribute table field of the Geographic Information System (GIS) layer and available for editing and later use. It is shown that a digital moisture model can be obtained through the cross-spectrum analysis of soil moisture with terrain parameters (frame of mapping – a digital elevation model) and ranking of forest types in order of increasing soil moisture (frame of mapping – a feature layer of inventory plots). The mapping results are demonstrated in terms of 2 test sites in mountainous and flat areas. Soil moisture mapping based on the DEM (digital elevation model) data was performed for a test site located in the Axial Western Sayan district of the mountain taiga forests; where forest types, due to the spatial cross-spectrum analysis, are distributed by terrain parameters and ranked by soil moisture. The result of the spatial analysis of the DEM is a raster (digital elevation model of soil moisture). Soil moisture mapping based on the forest management materials is performed for the test area representing the southern taiga forests of the Angara region. Ranking of soil moisture is made on the basis of inventory plot descriptions of the test site. The data of inventory plots was excluded from the analysis. Growth of tree species is a priori impossible down there (wetlands, rivers and lakes). In a simplified form, a ranked range of soil moisture is also demonstrated relative to the forest type as a generalized qualitative indicator of forest site conditions. Regardless of the land category (plantation, burnt area or cutover), each inventory plot receives an additional quantitative indicator of soil moisture, followed by the possibility of determining the regression equations for the potential productivity of tree species. It is found that in the presence of a feature layer of forest management data, soil moisture mapping is preferable to be adapted from the forest management materials. It is shown that there is a dependence of the productivity of stands on soil moisture.
Authors and Affiliations
S. K. Farber, N. S. Kuzmik
Keywords
Related Articles
- EP ID EP688509
- DOI -
- Views 262
- Downloads 0
The Peculiarities of Scots Pine Growth in the Conditions of the Krasnoyarsk Forest-Steppe
The growth peculiarities of Scots pine (Pinus sylvestris L.) have been studied by the example of an even-aged pine stand of high density. A long-term research has been conducted on a permanent sample plot. The data has b...
Growth Indices of Siberian Pine of Different Geographical Origin Grafted on a Scots Pine Rootstock
Forests dominated by Siberian pine (Pinus sibirica Du Tour) occupy about 40 mln ha in Russia. They fulfill soil- and water-protective roles, produce oxygen, and are the source of valuable nuts, wood, and other materials....
Growth of Vegetative Organs of Picea abies (L.) Karst. in Anthropogenic Environment
The studies were carried out in stands of various degree of devastation: in the city, suburban forests and forests of the green zone. Recreational loads strongly affect the sanitary condition of spruce forests. The numbe...
Carbon Stocks in Soils Based on the State Forest Inventory Data
The main organic carbon stocks in the predominantly boreal forests of Russia are contained in the soil pool. Quantitative estimates of soil pool carbon stocks vary considerably. This is due to the high temporal and spati...
Oak Stands Affected by Polyporaceae and Their Viability in the South-West of the Central Russian Upland
One of the reasons for the weakened state of English oak Quercus robur L. in coppice oak forests of the southern forest-steppe of European Russia is trunk and butt rots, the causative agents of which are the representati...