| 摘要: |
| 磷（Phosphorus，P） 是 地 球 生 态 系 统 中 重 要 的 生 命 元 素， 了 解 林 地 土 壤 全 磷（Total
Phosphorus，TP）垂直分布状况可为林业土壤科学施肥提供依据。以韩江流域中下游林地土壤为研究
对 象， 分 析 0~20 cm（D1）、20~40 cm（D2）、40~60 cm（D3）、60~80 cm（D4）、80~100 cm（D5） 的
土层中 TP 含量，并分析土壤 TP 的空间分布格局。结果表明：韩江流域中下游个层次土壤 TP 平均在
231.469~363.955 mg/kg 之间，TP 肥力等级为Ⅴ级；变异系数为 69.42%~72.51%，属于高度变异程度。韩
江流域中下游林地土壤 TP 的空间分布格局为：D1 层为中部高并向周边递减的分布格局，D2、D3、D4、
D5 层土壤 TP 空间分布情况大致相同，主要表现为四周高、中间低的特点；且随着土层的加深，TP 含量
呈逐渐减少的变化趋势。 |
| 关键词: 韩江流域 林地土壤 全磷 空间分布 |
| DOI： |
| 分类号: |
| 基金项目:广东省生态林业建设项目“林地土壤调查”；广东省林业科技计划项目(2019-07) |
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| Characteristics and Spatial Distribution Pattern of Total Phosphorus Content in Forest Soil in the Middle and Lower Reaches of the Hanjiang River Basin |
|
yecaihong1, Liyingying1, Heqian2, Dingxiaogang1
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1.Guangdong Academy of Forestry;2.South China Agricultural University
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| Abstract: |
| Phosphorus is an important life element in the earth ecosystem, and understanding the vertical
distribution of Total Phosphorus (TP) in forest soil could provide a basis for scientific fertilization of forest soil.
The soil TP content in 0~20 cm, 20~40 cm, 40~60 cm, 60~80 cm, 80~100 cm soil layers were analyzed, and the
spatial distribution pattern of soil TP was analyzed. The results showed that: the average TP in the middle and
lower reaches of Hanjiang River Basin ranged from 231.469~363.955 mg/kg, and the TP fertility grade was Ⅴ .
The coefficient of variation ranged from 69.42% to 72.51%, which was a high degree of variation. The spatial
distribution pattern of soil TP in the middle and lower reaches of the Hanjiang River Basin was as follows: the D1
layer was high in the middle and decreased to the periphery. And the spatial distribution of soil TP in the D2, D3,
D4, and D5 layers was roughly the same, mainly showing the characteristics of high around and low in the middle.
With the deepening of the soil layer, the TP content gradually decreased. |
| Key words: Hanjiang River Basin forest soil total Phosphorus spatial distribution |
