Exposure-related forest-steppe: A diverse landscape type determined by topography and climate

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F16%3A43891911" target="_blank" >RIV/60076658:12310/16:43891911 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216224:14310/16:00088190

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S0140196316301537" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0140196316301537</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jaridenv.2016.08.011" target="_blank" >10.1016/j.jaridenv.2016.08.011</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Exposure-related forest-steppe: A diverse landscape type determined by topography and climate

Popis výsledku v původním jazyce

Topographic heterogeneity under dry continental climate can create a landscape mosaic called "exposure-related forest-steppe", characterized by a regular pattern of forest on the north- and steppe on the south-facing slopes. Here we identify the climatic and topographic determinants of this landscape type, using a model of the Altai Mountains in southern Siberia because they (1) contain large areas of forest steppe together with forested and steppe landscapes, and (2) possess well-preserved natural land-cover. Based on the Landsat land-cover classification and digital elevation model we identified areas containing exposure-related forest-steppe and modeled their climatic and topographic thresholds using regression trees. The models showed that in the Altai exposure-related forest-steppe is most common in topographically heterogeneous areas with May September precipitation of 226-377 mm and a mean July temperature of 13.8-15.6 degrees C. Its existence is jointly determined by hilly topography and a climate that is moist enough to support tree growth on north-facing slopes, but insufficiently so to support woodland development on south-facing slopes. This is consistent with the concept of effective topographic heterogeneity, suggesting that topographic heterogeneity on the landscape level is translated into high habitat diversity and species diversity only within a certain range of climatic conditions.

Název v anglickém jazyce

Exposure-related forest-steppe: A diverse landscape type determined by topography and climate

Popis výsledku anglicky

Topographic heterogeneity under dry continental climate can create a landscape mosaic called "exposure-related forest-steppe", characterized by a regular pattern of forest on the north- and steppe on the south-facing slopes. Here we identify the climatic and topographic determinants of this landscape type, using a model of the Altai Mountains in southern Siberia because they (1) contain large areas of forest steppe together with forested and steppe landscapes, and (2) possess well-preserved natural land-cover. Based on the Landsat land-cover classification and digital elevation model we identified areas containing exposure-related forest-steppe and modeled their climatic and topographic thresholds using regression trees. The models showed that in the Altai exposure-related forest-steppe is most common in topographically heterogeneous areas with May September precipitation of 226-377 mm and a mean July temperature of 13.8-15.6 degrees C. Its existence is jointly determined by hilly topography and a climate that is moist enough to support tree growth on north-facing slopes, but insufficiently so to support woodland development on south-facing slopes. This is consistent with the concept of effective topographic heterogeneity, suggesting that topographic heterogeneity on the landscape level is translated into high habitat diversity and species diversity only within a certain range of climatic conditions.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EH - Ekologie – společenstva

OECD FORD obor

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Projekt

<a href="/cs/project/GAP504%2F11%2F0454" target="_blank" >GAP504/11/0454: Změny biodiverzity na přechodu pleistocénu a holocénu: současné analogie v reliktních ekosystémech Sibiře</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Arid Environments

ISSN

0140-1963

e-ISSN

—

Svazek periodika

135

Číslo periodika v rámci svazku

DEC 2016

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

75-84

Kód UT WoS článku

000387836500010

EID výsledku v databázi Scopus

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