Vegetation composition and succession of abandoned farmland: effects of ecological, historical and spatial factors
Vegetation composition and succession of abandoned farmland: effects of ecological, historical and spatial factors
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DOI：
10.1007/s10980-005-0068-2
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发表时间：
2005-09-01
影响因子：
5.2
通讯作者：
Bouchard, A
中科院分区：
文献类型：
--
作者：
Benjamin, K;Domon, G;Bouchard, A
在北美和欧洲，农业活动的机械化和现代化极大地改变了农业景观。由于农业环境的这些变化，废弃的农田仍然是鲜为人知的环境。一个整体的方法，包括生态，历史和空间因素的分析，是用来了解这些环境的动态所创造的农业废弃物在西南部魁北克（加拿大）。对研究区36个弃耕地的分析表明，弃耕地存在两个生态类群。第一个生态组是由来自牧场的废弃农田组成，目前主要是多刺灌木植被。第二生态群包括目前以水成草本和灌木植被为主的过去耕作的农田。非生物生态变量，如坡度，表面石质，冠层开放度和土壤pH值，以及土地利用历史，和年龄的弃耕地，是解释现状的弃耕地的主要因素。演替矢量分析表明，弃耕地的树种更新存在明显的分化。提出了可能的管理替代办法，如重新造林，以便将这些新环境纳入现代农业景观。
In North America, as well as in Europe, the mechanization and the modernization of the agricultural activities had strongly modified the agricultural landscapes. Originating from these transformations of the agricultural environment, abandoned farmlands remain poorly known environments. A holistic approach, including the analysis of ecological, historical and spatial factors, is used in order to understand the dynamics of these environments created by agricultural abandonment in southwestern Quebec (Canada). The analysis of 36 abandoned farmlands in the study area reveals the existence of two ecological groups. The first ecological group is composed by abandoned farmlands originating from pasture and at the moment dominated by a spiny shrub vegetation. The second ecological group includes past cultivated field at the moment dominated by either hydric herbaceous and shrub vegetation. Abiotic ecological variables such as slope, surface stoniness, canopy opening and soil pH, as well as land-use history, and age of the abandoned farmlands, are major factors explaining the current state of abandoned farmlands. Succession vector analysis reveals a strong differentiation among abandoned farmlands as to their tree species regeneration. Possible management alternatives, such as reforestation, are proposed in order to integrate those new environments to the modern agricultural landscape.