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首页> 外文期刊>Open Journal of Ecology >Factors associated with the spread of Chinese Tallow in East Texas forestlands
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Factors associated with the spread of Chinese Tallow in East Texas forestlands

机译：中国牛脂在德克萨斯州东部林地中传播的相关因素

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摘要

Chinese tallow tree (Triadica sebifera (L.) Small, Sapium sebiferum (L.) Roxb) is an invasive species that is replacing native ecosystems in areas of eastern Texas. It is imperative that the spatial pattern of the spread of this species be identified, as well as causal mechanisms. To that end, we seek to determine factors that contribute to the spread of Chinese tallow using classification and regression tree (CART) and logistic regression. We also attempt to identify current locations and spread rates across eastern Texas using Forest Inventory Analysis (FIA) data within major forest types. Distance to formerly infested plots and roads, slope, and disturbances (natural and anthropogenic) were identified as major (either facilitating or impeding) factors for the spread of Chinese tallow across the landscape. The highest probability of occurrence and spread rate of Chinese tallow were found in the oak/ gum/cypress forest type. Continued disturbance, from harvest events or natural disasters will allow the species to continue to spread throughout the region and could threaten overall forest productivity. We also discuss some implications of the continued spread of Chinese tallow on forest management. Forest managers could benefit from this analysis and use it as a guide for monitoring forest types with the highest risk of invasion.
机译：牛油树（Triadica sebifera（L.）小，Sapium sebiferum（L.）Roxb）是一种入侵物种，正在取代德克萨斯州东部地区的原生生态系统。必须确定该物种传播的空间格局以及因果机制。为此，我们寻求使用分类和回归树（CART）和逻辑回归来确定有助于牛脂传播的因素。我们还尝试使用主要森林类型内的森林清单分析（FIA）数据来确定德克萨斯州东部的当前位置和散布率。到原先被感染的地块和道路的距离，坡度和干扰（自然的和人为的）被确定为中国牛脂在整个景观中传播的主要（促进或阻碍）因素。在橡树/树胶/柏树类型中，中国牛脂的发生和扩散率最高。来自收割事件或自然灾害的持续干扰将使该物种继续在整个区域蔓延，并可能威胁到整个森林的生产力。我们还将讨论中国牛脂持续传播对森林经营的一些影响。森林管理者可以从该分析中受益，并将其用作监测入侵风险最高的森林类型的指南。

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