一个水青冈生态系统的土壤化学强度的研究(英文)  

INTENSITY OF PEDOCHEMICAL PROCESSES IN A NUDAL BEECH ECOSYSTEM

作　　者：Jan KU KLA 

机构地区：[1]斯洛伐克科学院森林生态研究所

出　　处：《植物生态学报》2001年第2期218-224,共7页Chinese Journal of Plant Ecology

基　　金：The author is grateful to the Slovak Grant Agency for Science(Grant No.2 /5 171/98;2 /5 173/98and2 /5 15 4/98) for partial supp

摘　　要：应用扁平溶度计考察了一个水青冈林 (Fageta paupera)的重力土壤溶液 ,该森林位于克里尼奇克·沃奇山脉 (斯洛伐克中部 )的生态实验站 (EES)。逐月采集土壤表层以及 10 cm和 15 cm土壤矿质层的土壤渗透液化学特征的样品。同时 ,采集各层的土壤样品 ,并分析其中的 Ca,Mg,K和 Na等 4个化学元素 ,并测定 p H值和传导力。一年中矿质土层中阳离子积累量如下 :Ca分别为 2 .6 kg· hm- 2 和 14.2 kg· hm- 2 ,Mg分别为 2 .1kg· hm- 2 和1.1kg· hm- 2 ,K分别为 42 .1kg· hm- 2 和 2 .3 kg· hm- 2 ,Na分别为 5 .5 kg· hm- 2 和 2 .0 kg· hm- 2 。Gravitation soil solutions were investigated by using flat lysimeters in a nudal beech forest (group of types of geobiocens Fageta paupera typica inferiora,type of geobiocen Carex pilosa nudum),located in the Ecological Experimental Station (EES) Kremnicke vrchy mountains (Central Slovakia).Chemical properties of the percolated soil solutions were sampled monthly below surface humus (A 0-horizon) and the 10 cm and 25 cm thick mineral layers of andosolic cambisol.The soils were sampled monthy in A 0 horizon, 10 cm and 25 cm depth,and their contents of four chemical elements Ca,Mg,K and Na,and pH and conductivity were analysed.The following amounts of the basic cations have been accumulated in mineral soil layers during the year (the balance is negatively influenced by freezing of A 0 lysimeter in the winter):calcium 2 6 kg Ca 2+ ·hm -2 and 14 2 kg Ca 2+ ·hm -2 ,magnesium 2 1 kg Mg 2+ ·hm -2 and 1 1 kg Mg 2+ ·hm -2 ,potassium 42 1 kg K +·hm -2 and 2 3 kg K +·hm -2 ,sodium 5 5 kg Na +·hm -2 and 2 0 kg Na +·hm -2 .

关 键 词：土壤溶液 土壤化学过程 水青冈林 生态系统 

分 类 号：S714[农业科学—林学]