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Найдено документов в текущей БД: 2

    Land use impacts on river hydrological regimes in Northern Asia
/ A. Onuchin [et al.] // IAHS-AISH Publication. - 2009. - Vol. 331: Symposium JS.4 at the Joint Convention of the International Association of Hydrological Sciences, IAHS and the International Association of Hydrogeologists, IAH (6 September 2009 through 12 September 2009, Hyderabad) Conference code: 83573. - P163-170 . -

Кл.слова (ненормированные):
Afforestation -- Clear cuts -- Forest logging -- Hydrological regime -- Precipitation -- River catchments -- River flow -- Afforestation -- Clear cuts -- Forest logging -- Hydrological regime -- Precipitation -- River catchments -- River flow -- Catchments -- Decision making -- Groundwater -- Hydrogeology -- Land use -- Landforms -- Reforestation -- Runoff -- Stream flow -- Water resources -- Watersheds -- Rivers -- afforestation -- assessment method -- catchment -- clearcutting -- decision making -- environmental indicator -- human activity -- hydrological regime -- hydrology -- land cover -- land use change -- logging (geophysics) -- regional climate -- river flow -- runoff -- sustainability -- water quality -- watershed -- Siberia

Аннотация: River flow is vitally important to many human activities. River flow is influenced by climatic and land-cover changes. Land-use practices have a significant effect on water flow and quality. Land use can change surface runoff, which in turn can be used as an environmental indicator of a land use level of sustamability. Along with the regional climate, hydrological processes occurring in river basins in Siberia and mountainous Kyrgyzia are controlled by forest logging and afforestation. The method used to analyse annual river flow genesis to date allowed the onset of, and assessment of, the level of human activities in the watersheds. Moreover, river flow genesis can be used in land use decision-making. River flow reflects all watershed changes, which can have opposite effects, thus compensating for each other. This study confirmed that river flow changes in time, thus reflecting land cover changes in watersheds. Copyright В© 2009 IAHS Press.

Scopus

Держатели документа:
V. N. Sukachev Institute of Forest Siberian Branch, Russian Academy of Sciences, 660036, Academgorodok, Krasnoyarsk, Russian Federation
P. A. Gan Institute of Forest and Nut Plantation, Kyrgyzian Academy of Sciences, Kargachevaya rosha, 15, 720015, Bishkek, Kyrgyzstan

Доп.точки доступа:
Onuchin, A.; Burenina, T.; Gaparov, K.; Ziryukina, N.
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    GIS-based tool to determine streamside forest shelterbelt width
/ M. Korets, A. Onuchin // IAHS-AISH Publication. - 2009. - Vol. 331: Symposium JS.4 at the Joint Convention of the International Association of Hydrological Sciences, IAHS and the International Association of Hydrogeologists, IAH (6 September 2009 through 12 September 2009, Hyderabad) Conference code: 83573. - P510-513 . -

Кл.слова (ненормированные):
Central Siberia -- DEM -- GIS -- Streamside forest shelterbelt -- Surface runoff -- DEM -- GIS -- SIBERIA -- Streamside forest shelterbelt -- Surface runoff -- Algorithms -- Groundwater -- Hydrogeology -- Reservoirs (water) -- Runoff -- Surface structure -- Water pollution -- Water quality -- Water resources -- Rivers -- algorithm -- assessment method -- basin management -- empirical analysis -- forest ecosystem -- GIS -- hydrology -- infiltration -- integrated approach -- landscape -- pollution -- runoff -- shelterbelt -- slope -- software -- spatial analysis -- stream -- three-dimensional modeling -- water quality -- water resource -- Yenisei Basin -- Sandfly fever sicilian virus

Аннотация: Forest areas can intercept surface runoff from upslope bare areas and transfer it to interflow. Therefore, planting protective forests along the banks of rivers, reservoirs, and lakes preserves natural water sources from pollution. Depending on the particular landscape conditions, the streamside forest shelterbelt (SFS) width is often either wider or narrower than the ecologically substantiated width. As a result, either water quality worsens or the ecologically unjustified prohibition of forest use leads to economic losses. The assessment of SFS width using GIS technologies allows considerable simplification of evaluation procedures and their application in practice. DEM processing is integrated into most modern GIS software packages. For example, the popular ESRI ArcGIS package with its Spatial Analyst module provides extra options for calculating a series of relief-based hydrological features, which include calculation procedures for surface flow direction, length of flow-producing slopes and surface flow accumulations. Two algorithms for GIS-based SFS construction were tested for several rivers of the Yenisei basin and Krasnoyarsk Reservoir, Siberia. The first algorithm is technically simple and based on empirical equations of runoff slope length, slope steepness and soil infiltration. The second one includes a three-dimensional flow accumulation procedure and thus it is more sensitive to real surface structure. Both algorithms are ready to be used in practice. The results obtained indicate that, on average, the SFS width along banks of large rivers might be reduced, while in some cases it should be widened along the banks of small streams. Copyright В© 2009 IAHS Press.

Scopus

Держатели документа:
V. N. Sukachev Institute of Forest, Siberian Branch, Russian Academy of Sciences, 50/28, Akademgorodok, 660036, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Korets, M.; Onuchin, A.
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