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首页> 外文期刊>Northern Journal of Applied Forestry >Seedling reproduction established with soil scarification within an oak overwood after overstory removal
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Seedling reproduction established with soil scarification within an oak overwood after overstory removal

机译：去除过高的故事后，在橡木套材内因土壤稀少而建立了幼苗繁殖

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We report on the density and height of seedling reproduction established with and without soil scarification in a mixed-oak two-stage shelterwood after overstory removal. In 1993, shallow soil scarfication was conducted to bury recently disseminated northern red oak (Quercus rubra L.) acorns collected from another site and disrupt red maple (Acer rubrum L.) seedling reproduction that dominated the understory. The shelterwood overstory was removed in the winter of 1997/1998. The following spring, seedling density decreased in response to harvest activities. However, one growing season after overstory removal, seedling density for most species or species groups had recovered to preharvest levels. At that time (5 years after soil scarfication), scar fled plots had 16 times more northern red oak (35,119 ha(-1)), 50% fewer (8,076 ha(-1)) red maple, and 37% more total (55,432 ha(-1)) seedlings compared to undisturbed control plots. Other species of oak, which generally lacked mast at the time of scarfication, had significantly reduced density (59% less, at 4,405 ha(-1)), suggesting that scarification treatments should coincide with viable mast or net loss of oak seedlings may result. Five growing seasons after treatment, the greatest proportions of seedlings were in the tallest two height classes (33-122 cm and > 122 cm) and were northern red oak. In summary, 5 Years after incorporating viable mast into the soil with shallow scarification within a mixed-oak shelterwood and 1 year after overstory removal, scarified areas had more advance reproduction dominated by large and vigorously growing oak seedlings, while undisturbed areas had lower seedling density of primarily large red maple.
机译：我们报道了在混合橡木两阶段遮盖物去除故事后在有和没有土壤稀疏的情况下建立的幼苗繁殖的密度和高度。 1993年，进行了浅层土壤剥落术，以掩埋最近从另一处采集的散布的北部红橡子（Quercus rubra L.）橡子，并破坏主导该林下的红枫（Acer rubrum L.）幼苗的繁殖。在1997/1998年冬季，遮盖物的上层建筑被拆除。次年春季，幼苗密度因收获活动而下降。但是，在去除草皮后的一个生长季节中，大多数物种或物种组的幼苗密度已恢复到收获前的水平。那时（土壤被剥落后的5年），疤痕fl积的北部红橡树（35,119公顷（-1））多了16倍，红枫树减少了50％（8,076公顷（-1）），而总红槭增加了37％（ 55,432公顷（-1））的幼苗相比未干扰的对照地块。其他种类的橡木，通常在砍伐时没有桅杆，密度显着降低（在4,405 ha（-1）处降低了59％），这表明松散处理应与可行的桅杆同时进行，否则可能会导致橡木幼苗的净损失。处理后五个生长季节，最大比例的幼苗在最高的两个高度等级中（33-122 cm和> 122 cm），并且是北部的红橡树。综上所述，在混合橡树遮盖物内的浅层划痕的土壤中掺入可行的桅杆后的5年，以及过高的伐木力清除后的1年，被划痕的区域具有较大的生长力，主要生长于生长茂盛的橡树幼苗，而未受干扰的区域的幼苗密度较低主要是大的红枫。

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