热带土壤发育过程的定量研究—以海南岛北部为例

黄成敏; 龚子同

热带土壤发育过程的定量研究—以海南岛北部为例

黄成敏¹,
龚子同¹

1.
四川大学环境学院, 四川成都 610065
2.
中国科学院南京土壤研究所, 江苏南京 210008

基金项目:

国家自然科学基金项目 49831004

详细信息

作者简介:
黄成敏(1968), 男, 副教授, 1999年在中国科学院南京土壤研究所获博士学位, 现从事环境地学方面的教学与科研工作

中图分类号: S151.1
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- 被引次数: 0
出版历程
- 收稿日期: 2000-08-29
- 刊出日期: 2001-05-25

QUANTITATIVE STUDIES ON DEVELOPMENT OF TROPICAL SOILS: A CASE STUDY IN NORTHERN HAINAN ISLAND

HUANG Cheng-min¹,
GONG Zi-tong¹

1.
College of Environmental Science &Engineering, Sichuan University, Chengdu 610065, China
2.
Institute of Soil Science, Chinese Academy of Science, Nanjing 210008, China

摘要

摘要: 海南岛北部不同时期喷发的玄武岩上发育的土壤构成一个成土年代系列, 由此可以定量地探讨发育过程中土壤性质随风化成土年龄增加的变化规律.研究表明土体厚度、B层厚度、RR指数、w(REE)、w(Ba)/w(Nb)、w(Fe_d)/w(Fe_t)、w(Fe_d)、w(Fe_o)/w(Fe_d)、土壤硅铝率、土壤硅铁铝率、频率磁化率等土壤性质与风化成土年龄具有确定的相应关系.根据土壤发生学原则, 得出土壤性质与风化成土年龄两者间的统计方程.对于成土环境相同或相近地区可从这些方程由土壤性质推断相对风化成土年龄和发育程度, 也可由风化成土年龄估计土壤特性, 研究成土速率
- 玄武岩 /
- 土壤发育 /
- 成土年龄 /
- 定量研究
Abstract: Based on the study of a chronosequence of soils, developed from basalts erupted in different geological times, in the northern Hainan island, the variation of soil properties with soil age increasing in its development has been discussed quantitatively. The results show that such soil properties as solum and B horizon thickness, redness rating (RR), w(REE), w(Ba)/w(Nb), w(Fe_d)/w(Fe_t), w(Fe_d), w(Fe_o)/w(Fe_d), silica alumina molecular ratio and silica sesquioxide ratio of soils, frequency dependent susceptibility, etc. are definitely correlative to the soil ages. The statistical equations between soil properties and ages have been determined according to pedological principles. When found in the same or similar soil forming environment and regions, relative soil age and soil development degree could be inferred by soil properties which could also be evaluated by soil ages to research rate of soil formation depending on those equations.
- basalt /
- soil development /
- soil age /
- quantitative study

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图 1 土体厚度(a)、B层厚度(b) 与风化成土年龄的关系

Fig. 1. Relationship between thickness of solum (a), B horizons (b) and soil ages

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图 2 RR指数随风化成土年龄变化的趋势

Fig. 2. Change of RR values with soil ages

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图 3 土壤w(Ba)/w(Nb) (a)、B层稀土元素总量w(REE) (b)、频率磁化率(c) 与风化成土年龄t间的关系

Fig. 3. Relationship between w(Ba)/w(Nb) (a), total w(REE) in B horizon (b), frequency dependent susceptibility (c) and soil ages

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表 1 玄武岩上发育土壤的基本特性

Table 1. Basic properties of soils developed from basalt

表 2 土壤中各种化学形态铁的质量分数及其比例关系

Table 2. Iron mass fractions and their ratios of various forms in soils

表 3 土壤特性与风化成土年龄的函数统计方程

Table 3. Functional equations of soil properties and ages

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