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首页> 外文期刊>Canadian Journal of Forest Research >Stand structure, invasion, and growth dynamics of bog pine (Pinus uncinata var. rotundata) in relation to peat cutting and drainage in the Jura Mountains, Switzerland
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Stand structure, invasion, and growth dynamics of bog pine (Pinus uncinata var. rotundata) in relation to peat cutting and drainage in the Jura Mountains, Switzerland

机译:瑞士侏罗山沼泽松(Pinus uncinata var。rotundata)的林分结构,入侵和生长动态与泥炭切割和排水的关系

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摘要

A description of bog pine stands (Pinus uncinata Ramond var. rotundata (Link) Antoine) on uncut oligotrophic mires affected by drainage and nearby peat cuttings at three sites of the Jura Mountains (Switzerland) is given. In all sites, three situations were chosen: (i) central parts of the bogs, (ii) surfaces near cutting walls and bog margins, and (iii) intermediate situations. Population structures were characteristic for each situation. In the open and wet central parts of the bogs, trees were scattered, small, and uneven aged. In the intermediate situations, tree density was higher, and the stand was multilayered with taller and uneven-aged individuals. Near the edges of the bogs or close to the peat cutting walls, the trees were wall, even-aged, and younger with a high growth rate. The nonsynchronous colonization of the bog pine trees on the three sites indicates that local factors such as drainage and peat cuttings in the vicinity of the uncut surfaces were more influential than climate factors. Radial growth patterns, very similar between the sites and the various pinewood stands, and the numerous common pointer years reflect local and regional climate flucuations. The pinewood development on uncut bogs in the Jura Mountains thus represents a recent dynamics, which is strongly linked to human activities.
机译:给出了侏罗山(瑞士)三个地点受排水和附近泥炭mi插影响的未切割的贫营养泥潭的沼泽松木林(Pinus uncinata Ramond var。rotundata(链接)Antoine)的描述。在所有站点中,选择了三种情况:(i)沼泽的中心部分,(ii)切割壁和沼泽边缘附近的表面,以及(iii)中间情况。人口结构是每种情况的特征。在沼泽的开阔湿润的中部,树木零散,小而参差不齐。在中间情况下,树木密度更高,并且林分多层,具有更高且年龄不均的个体。靠近沼泽边缘或靠近泥炭切割墙,树木成墙,年龄均匀,并且幼小,生长速度快。沼泽松树在这三个地点的非同步定殖表明,未切割表面附近的局部因素(例如排水和泥炭cutting插)比气候因素更具影响力。地点和各种松林林分之间的径向生长方式非常相似,并且许多共同的指针年份反映了当地和区域的气候变化。因此,侏罗山未切割沼泽上的松木发育代表了最近的动态,这与人类活动密切相关。

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