用林分组成表示土壤生化转变强度

Q4 Agricultural and Biological Sciences
G. Olszowska
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引用次数: 2

摘要

摘要本研究的目的是测定生长在肥沃新鲜混合落叶地上的纯苏格兰松、挪威云杉、银杉、欧洲落叶松、欧洲山毛榉和橡树林以及冷杉、山毛榉和冷杉山毛榉混交林的土壤生化活性。实地工作在下列林区进行:Nowe Ramuki(马祖尔斯科-波德拉斯卡林区)、Płońsk、Jabłonna、Brzeziny Siedlce、Grójec(马祖尔斯科-波德拉斯卡林区)和Skarżysko、Ostrowiec和Marcule (Małopolska林区)。2015-2017年,在每个林分分配样地并进行化学和土壤酶活性测量。从有机(O)层和腐殖质(A)层取样,测定了两者的酸度(1M KCl)、氮、碳含量、交换性碱性阳离子总数和水解酸度。土壤酶的测定包括脲酶、天冬氨酸酶、酸性磷酸酶和脱氢酶的活性测定。针叶树,特别是冷杉、云杉或落叶松,以及杉木-山毛榉和松木-山毛榉混交林对土壤生化性质有非常积极的影响。脱氢酶活性以云杉和冷杉-山毛榉混交林最高,山毛榉和松林较低,栎林最低。此外,栎林土壤酸度最低,碱性阳离子浓度最低,氮、碳含量最低,碳氮比最小。总体而言,土壤酶活性与土壤化学参数呈极显著相关。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Denoting the intensity of soil biochemical transition according to stand species composition
Abstract The aim of this study was to denote biochemical soil activity in pure Scots pine, Norway spruce, silver fir, European larch, European beech and oak stands as well as in mixed fir-pine, beech-pine and fir-beech forests growing on a fertile fresh mixed deciduous site. The field work was carried out in the following Forest Districts: Nowe Ramuki (Mazursko-Podlaska forest region), Płońsk, Jabłonna, Brzeziny Siedlce, Grójec (Mazowiecko-Podlaska forest region) and Skarżysko, Ostrowiec and Marcule (Małopolska forest region). In 2015–2017, sample plots were assigned and chemical as well as soil enzyme activity measurements were made in each forest stand. Samples were taken from the organic (O) and humus (A) layers and for both the acidity (in 1M KCl), content of nitrogen, carbon, sum of exchangeable alkaline cations and hydrolytic acidity were determined. The investigation of soil enzymes included the measurements of urease, asparginase, acid phosphatase and dehydrogenase activity. Coniferous trees, especially fir, spruce or larch, and mixed fir-beech and pine-beech stands were observed to have a very positive influence on the biochemical soil properties. The highest activity of dehydrogenase was observed in soils of spruce and mixed fir-beech stands, whereas it was lower in soils of beech and pine stands, and the lowest in oak stands. Oak stands were furthermore characterized by the lowest soil acidity, lowest concentration of alkaline cations, the lowest nitrogen and carbon content as well as the smallest C/N ratio. In overall, soil enzyme activity showed a significant correlation with chemical soil parameters.
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来源期刊
USDA Forest Service - Research Papers PNW-RP
USDA Forest Service - Research Papers PNW-RP Agricultural and Biological Sciences-Forestry
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