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Shelter forests of the Beijing mountain area are a major ecological barrier of Beijing. Forest cover protection and construction, and health and stability of forest ecosystems are critically important to the ecological security of Beijing. This study aims to provide a scientific basis for the restoration of degraded vegetation, protection of natural vegetation, and construction and management of shelter forests. Based on the dominant species of the shelter forest in the Beijing mountain area, 26 representative natural forest plots were established across 13 natural reserves or forest management areas in 7 counties of the Beijing mountain area. To reveal the distribution pattern of arbor species in the area and explore how environmental factors influence the distribution pattern, Detrended Canonical Correspondence Analysis (DCCA) was used to analyze the relationships between the distribution of dominant arbors and 14 environmental factors. Environmental factors tested included soil infiltration rates (IR) , pH value (pH) , alkali鄄hydrolyzable nitrogen (AN) , available phosphorus (AP) , available potassium (AK) , organic matter (OM) , total nitrogen (TN) , total phosphorus (TP) , total potassium (TK) , elevation (ELE) , slope (SLO) , aspect (ASP) , thickness of soil (TOS) , and soil water content (SWC). Twenty six sample plots were divided into 5 communities: Pinus tabulaeformis (I) , Platycladus orientalis (域) , Quercus (芋) , Populus鄄Betula (IV) and Larix principis鄄rupprechtii (V) according to the dominant arbor species in the area and their

收稿日期：２０１３• １０• ３０； 网络出版日期：２０１４• ０７• ２５ * 通讯作者 Ｃｏｒｒｅｓｐｏｎｄｉｎｇ ａｕｔｈｏｒ．Ｅ•ｍａｉｌ： ｙｕｘｉｎｘｉａｏ１１＠ １２６．ｃｏｍ ＤＯＩ： １０．５８４６ ／ ｓｔｘｂ２０１３１０３０２６２０ 孙佳美， 余新晓， 樊登星， 梁洪儒， 常 玉， 李瀚之．模拟降雨下植被盖度对坡面流水动力学特性的影响．生态学报，２０１５，３５(８) ：２５７４• ２５８０． Ｓｕｎ Ｊ Ｍ， Ｙｕ Ｘ Ｘ， Ｆａｎ Ｄ Ｘ， Ｌｉａｎｇ Ｈ Ｒ， Ｃｈａｎｇ Ｙ， Ｌｉ Ｈ Ｚ．Ｉｍｐａｃｔ ｏｆ ｖｅｇｅｔａｔｉｏｎ ｃｏｖｅｒ ｏｎ ｓｕｒｆａｃｅ ｒｕｎｏｆｆ ｈｙｄｒａｕｌｉｃ ｃｈａｒａｃｔｅｒｉｓｔｉｃｓ ｗｉｔｈ ｓｉｍｕｌａｔｅｄ ｒａｉｎｆａｌｌ． Ａｃｔａ Ｅｃｏｌｏｇｉｃａ Ｓｉｎｉｃａ，２０１５，３５(８) ：２５７４• ２５８０．

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