Variations of soil enzyme activitie

Variations of soil enzyme activities in a temperate forest soil
Received: 4 July 2008 / Accepted: 27 January 2009 / Published online: 11 March 2009

The Ecological Society of Japan 2009
Hojeong Kang ,Sinkyu Kang ,Dowon Lee
Abstract
Soil enzyme activities (dehydrogenase, urease,phosphatase, and arylsulfatase) in a temperate forest soilwere determined in relation to land scape position and seasons. Overstory of the area is dominated by Quercusmongolica, Kalopanax pictus, Carpicus cordata, and Acer pseudo-sieboldianum. The activities were measured in three patches, namely a north-facing backslope, a ridge,and a south-facing backslope in autumn and spring over 2 years. In addition, spatially more detailed analysis for phosphatase was conducted before and after litterfall production in six patches. Dehydrogenase, urease,phosphatase, and arylsulfatase activities varied 1.8–18.5 lg INT-formazan g
1 h
1, 45.4–347.0 lg NH4+g
1 h
1, 0.9–4.5 mmol pNP g
1 h
1, and 0.7–2.6mmol pNP g
1 h
1, respectively. In general, higher enzyme activities were found in the northern aspect than in the southern aspect. This variation appears to be related to differences in chemical properties (e.g., Fe, Al,and Mg) of soil as well as distribution of leaf litter. Two patterns were discernible in relation to seasonal variations.Dehydrogenase and urease exhibited a positive correlation with mean air temperature, suggesting that temperature would be a major controlling variable for those enzymes. In contrast, higher activities were detected in autumn for phosphatase and arylsulfatase activities, which appeared to be closely related to litter production and distribution. Overall results of this study indicate that soil enzyme activities in a forest floor are influenced by several variables such as temperature, nutrient availability, and input of leaf litter, which are closely related to landscape position.


Keywords Decomposition :Forest floor ,Extracellular enzyme ,Seasonal variation ,Landscape ecology

結果 (中文) 1:

在温带森林土壤中土壤酶活性的变化收到： 2008 年 7 月 4 日 / 接受： 2009 年 1 月 27 日在线出版： 2009 年 3 月 11 日2009 年日本生态学会Hojeong Sinkyu 康康，桃源李摘要土壤酶活性 （脱氢酶、 脲酶、 磷酸酶、 和 arylsulfatase) 在确定土地景观位置和季节的温带森林 soilwere。谢宏的面积由 Quercusmongolica，刺楸锦鸡、 Carpicus 鱼腥草和宏碁假色槭。在秋季和春季 2 年以上，在三个修补程序，即朝北 backslope、 脊和朝南 backslope 测定活性。此外，空间更详细的分析，为磷酸酶进行之前和之后凋落物生产中六个修补程序。脱氢酶、 脲酶、 磷酸酶、 和 arylsulfatase 的活动多种多样 1.8 — — 18.5 lg INT 结合 g 1 h 1 45.4 — — 347.0 lg NH4 + g 1 h 1，0.9-4.5 毫摩尔 pNP g 1 h 1 和 0.7 — — 2.6mmol pNP g 1 h 1，分别。一般情况下，在北部方面比南部方面发现较高的酶活性。这种变化似乎涉及化学性能 （如铁、 铝、 和毫克） 的土壤，以及叶凋落物的分布差异。两种模式有明显的季节性变化有关。脱氢酶和脲酶表现出与平均气温，这表明温度不会一个主要的控制变量，这些酶呈正相关。与此相反的是，较高的活动检测在秋天磷酸酶和 arylsulfatase 的活动，似乎与凋落物产量和分布密切相关。总体而言这项研究的结果表明林地土壤酶活性受几个因素密切相关，景观位置的温度、 养分有效性、 和叶凋落物的输入。Keywords Decomposition :Forest floor ,Extracellular enzyme ,Seasonal variation ,Landscape ecology

結果 (中文) 3:

在温带森林土壤
收到土壤酶活性变化：2008 / 4七月27一月2009 /接受网上公布：11月2009

生态社会的日本2009
hojeong康，sinkyu康，该李
摘要
土壤酶活性（脱氢酶，脲酶，磷酸酶，和芳基硫酸酯酶）在与景观位置和季节确定的温带森林土壤。这个地区的上层是由quercusmongolica，刺楸红腹锦鸡，腕鱼腥草为主，和宏基的伪sieboldianum。在三补丁进行活动，即一个朝北的后坡，山脊，和一个朝南的后坡在秋季和春季2多年。此外，空间更详细的分析，在六补丁和磷酸酶凋落物后进行。脱氢酶，脲酶，磷酸酶，和芳基硫酸酯酶活性变化1.8–18.5 LG G

int甲1小时1，45.4–347 LG G
NH4 1 h
1，0.9–4.5 mmol PNP G
1 h
1，和0.7–2.6mmol PNP G
1 h
1，分别。一般，较高的酶活性在北方比在南方方面方面。这种变化似乎在化学性质差异有关（例如，Fe，Al，Mg）土壤和凋落物的分布。两模式有关的季节性变化明显。脱氢酶和脲酶表现出与气温呈正相关，这表明温度将是一个重大的那些酶控制变量。相反，在磷酸酶和芳基硫酸酯酶活性均高于秋季检测活动，这似乎是对凋落物产量及分布密切相关。本研究的总体结果表明，在森林的地面土壤酶活性是由几个变量如温度，影响养分的有效性，与叶凋落物输入，这是景观位置密切相关。


关键词分解：森林地板，胞外酶，季节变化，景观生态学