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首页> 外文期刊>Australian Forestry >Growth of Pinus elliottii, P. pinaster and P. radiata on coastal dune soils near Jervis Bay, Australian Capital Territory
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Growth of Pinus elliottii, P. pinaster and P. radiata on coastal dune soils near Jervis Bay, Australian Capital Territory

机译：在澳大利亚首都领地杰维斯湾附近的沿海沙丘土壤上，生长松果，松果和辐射松

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摘要

The growth of Pinus elliottii, P. pinaster and P. radiata on coastal dune soils is compared over a period of 23 y. Small growth responses to the application of urea, gypsum combined with potassium sulphate, dicaluum phosphate, and lime were obtainedin the early phase of the experiment but they had dissipated at 15 y when the experiment was thinned. Immediately prior to thinning, stand basal area was 44.3, 33.9 and 39.4 m~2ha~(-1) for P. radiata, P. pinaster and P. elliottii respectively. In the second (late) phase of the experiment no growth response was obtained to superphosphate applied with or without urea to thinned or non-thinned stands. In non-thinned stands, P. radiata and P. elliottii had similar growth rates; both species grew faster than P. pinaster. Thinning reduced productivity of P. elliottii. The results are discussed in relation to the notion of Type 1 and Type 2 growth responses, problems in forecasting future growth from early measurements, and the problem of estimating changesin stand productivity between rotations.
机译：比较了在23年内沿海沙丘土壤上的Pinus elliottii，P。pinaster和P. radiata生长。在试验的早期阶段，获得了对尿素，石膏，硫酸钾，磷酸二氢钙和石灰的施用的少量生长响应，但当试验变薄时，它们在15 y时消失了。细化前，辐射假单胞菌，松果假单胞菌和埃利奥假单胞菌的林分基础面积分别为44.3、33.9和39.4 m〜2ha〜（-1）。在实验的第二（后期）阶段，对于在稀薄或未稀薄林分上施用或不施用尿素的过磷酸钙均未获得生长响应。在非稀疏林分中，辐射松和elliottii有相似的生长速度。两种物种的生长都比P. pinaster快。疏化降低了P. elliottii的生产力。讨论了有关1型和2型生长响应的概念，通过早期测量预测未来增长的问题以及估计轮伐之间林分生产力变化的问题。

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