| 摘要: |
| 以粤北地区的清远市针阔混交林土壤为研究对象，野外采集 129 个样点土壤（0~80 cm），运
用酸溶 - 钼锑抗比色法来检测全磷（TP）含量，结合运用 Arc GIS 技术与统计分析等方法，探究清远市
针阔混交林土壤 TP 的空间分布格局。结果表明：针阔混交林土壤 D1 层 TP 含量为 107.13~967.67 mg/kg，
平均值为 324.81 mg/kg；D2 层 TP 含量为 76.87~917.67 mg/kg，平均值为 316.18 mg/kg；D3 层 TP 含量为
79.53~922.00 mg/kg，平均值为 313.37 mg/kg；D4 层 TP 含量为 70.83~937.33 mg/kg，平均值为 307.34 mg/kg。
在垂直空间分布上 D1 层 TP 含量最高，随着土壤深度的增加，TP 含量呈现逐渐下降的趋势。针阔混交
林各层土壤 TP 含量的高值区主要位于中部以及东部小部分区域，北部、南部的 TP 含量最低。水平空间
上，针阔混交林土壤 TP 含量呈自东向西横向沿线高，南、北两端偏低的分布特征，表现出明显的空间
异质性。 |
| 关键词: 针阔混交林 森林土壤 全磷 粤北 |
| DOI： |
| 投稿时间：2022-11-07修订日期：2023-02-15 |
| 基金项目: |
|
| Distribution Characteristics of Soil TP Content in Coniferous and Broad - leaved Mixed Forests in Northern Guangdong |
| zouzuyou,KANG Jian,LI Yingying,YU Fei,SU Yan,DING Xiaogang |
| (Guangdong?forestry?science?research?institute;Guangdong Academy of Forestry,South China Botanical Garden, Chinese Academy of Sciences,;College of Forestry and Landscape Architecture, South China Agricultural University) |
| Abstract: |
| This paper takes the soil of coniferous and broad-leaved mixed forests in Qingyuan city of
northern Guangdong as the research object. The soil of 129 sampling points (0-80 cm) were collected in the ?eld,
and the total phosphorus (TP) content was detected by acid-soluble-molybdenum antimony anti-colorimetry.
Combined Arc GIS technology with statistical analysis, the spatial distribution pattern of soil TP in the coniferous
and broad-leaved mixed forests in Qingyuan city was explored. The results showed that the content of TP in the
soil D1 layer of coniferous and broad-leaved mixed forests in Qingyuan city was 107.13-967.67 mg / kg, with an
average of 324.81 mg/kg. TP content in D2 layer was 76.87-917.67 mg/kg, with an average of 316.18 mg/kg. TP
content in D3 layer was 79.53-922.00 mg/kg, with an average of 313.37 mg/kg. The TP content in D4 layer was
70.83-937.33 mg/kg, with an average of 307.34 mg/kg. The TP content in the D1 layer was the highest in vertical
spatial distribution, and the TP content showed a gradual decrease with the increase of soil depth. The high-value
areas of soil TP content in each layer of coniferous and broad-leaved mixed forests in Qingyuan city were mainly
located in the middle and small parts of the eastern part of the study area, and the TP content in the north and
south was the lowest. In horizontal space, the soil TP content of coniferous and broad mixed forests was high
along the transverse line from east to west, and the distribution characteristics were low at the south and north
ends, showing obvious spatial heterogeneity. |
| Key words: coniferous and broad-leaved mixed forests forest soil total phosphorus north Guangdong |
