Response of tree-ring width to climate warming and selective logging in larch forests of the Mongolian Altai

作     者：Choimaa Dulamsuren Mookhor Khishigjargal Christoph Leuschner Markus Hauck 

作者机构：Department of Plant EcologyAlbrecht von Haller Institute of Plant SciencesGeorg August University of GöttingenUntere Karspüle 237073 GöttingenGermany 

出 版 物：《Journal of Plant Ecology》 (植物生态学报（英文版）)

年 卷 期：2014年第7卷第1期

页      面：24-38页

核心收录：

学科分类：0907[农学-林学] 08[工学] 0829[工学-林业工程] 09[农学] 

基　　金：The study was supported by a grant of the Volkswagen Foundation to M.H. C.D.and C.L.for the project‘Forest regeneration and biodiversity at the forest-steppe border of the Altai and Khangai Mountains under contrasting developments of livestock numbers in Kazakhstan and Mongolia’ 

主　　题：climate change forest management forest-steppe ecotones Central Asia Larix sibirica 

摘      要：Aims The Mongolian Altai is an old settlement area,which is populated by pastoral nomads since 2000–3000 *** in this region(at ca.2300 m a.s.l.)are highly fragmented and border on steppe and alpine grasslands,which are used for mobile livestock *** climate in Central Asia is warming to levels clearly above the global average,which affects the ***,the transition from planned to market economy and the decollectivization of livestock 20 years ago has strongly changed land use practices in Mongolia,especially resulting in an increase in recent logging *** were interested in the question how climate warming and selective logging influence the annual stem growth and the stand *** The impact of climate and land use by the pastoral nomads on the annual stem increment of more than 1800 trees of Siberian larch(Larix sibirica)was *** groups of trees with divergent growth trends depending on the social position and stand history were identified by non-metric multidimensional scaling and analysis of ***-term trends in the annual stem increment were analyzed by establishing separate regional growth curves for trees of different age *** Findings Instrumental climate data substantiate an increase of temperature by 2.1°C since 1940 at constant *** benefit from the increased ***–response analysis revealed that radial stem increment was promoted by the temperature in early summer,but also high precipitation in spring and in the year before tree-ring *** dynamics is also strongly influenced by anthropogenic *** addition to the natural forest dynamics,logging resulted in divergent growth trends within given age classes and habitats(forest interior and forest edge);overall,22 groups of trees with different characteristics in the annual radial stem increment were identified.A tree-ring series-based reconstruction of logging inten