| 摘要: |
| 为探究西江下游典型流域森林土壤全磷含量的空间分布规律，以该区域 363 个剖面的 1 815 个
样品的全磷检测数据，结合普通克里金法和 GIS 技术，分析了西江下游典型流域 0~100 cm 深度的土壤全
磷含量及空间分布特征。结果显示：（1）全磷在 0~100 cm 中含量的平均值为 221.19 mg/kg，全磷养分缺
乏。在 D1-D5 层全磷均值分别为 240.12 mg/kg、232.09 mg/kg、218.00 mg/kg、209.21 mg/kg 和 208.50 mg/
kg，随着土层加深呈下降趋势。各土层间全磷含量差异性不显著，除 D1 与 D4、D5 层土壤差异性显著
外，其余层次土壤间全磷含量无显著差异性；（2）从水平分布来看，研究区域全磷含量整体呈中、北部
高，东部和西南部较低的分布特征，从垂直分布来看，D1-D3 层土壤全磷含量显著高于 D4、D5 层，但
全磷含量随土层深度的加深无明显的变化规律。研究西江流域下游森林土壤全磷的空间分布规律，在西
江下游典型流域开展森林土壤全磷的含量及空间分布预测研究不仅有助于了解森林群落结构和生态系统
进程，而且对于区域林地管理和经营有着十分重要的意义。 |
| 关键词: 西江 森林土壤 全磷 空间分布 |
| DOI： |
| 分类号: |
| 基金项目:林地土壤调查 |
|
| Spatial Distribution of Soil Total Phosphorus in Typical Watershed of Xijiang River |
|
KANG Jian1,2, WANG Yang3,1, HE Chaoyin1, ZHANG Zhongrui1, ding xiaogang1
|
|
1.Guangdong Academy of Forestry / Guangdong Provincial Key Laboratory of Silviculture Protection and Utilizationy,Guangzhou;2.South China Botanical Garden,Chinese Academy of Sciences;3.Guangzhou
|
| Abstract: |
| In order to explore the spatial distribution of soil total phosphorus content in the typical watershed
of the lower reaches of Xijiang River, using the total phosphorus detection data of 1815 samples from 363
profiles in the region, combined with the general Kriging method and GIS technology, the soil total phosphorus
content and spatial distribution characteristics of the typical watershed of the lower reaches of Xijiang River were
analyzed.The results showed that: (1) The average content of total phosphorus in 0-100 cm was 221.19 mg/kg,
indicating a lack of total phosphorus nutrient. The mean values of total phosphorus in D1-D5 layers were 240.12
mg/kg, 232.09 mg/kg, 218.00 mg/kg, 209.21 mg/kg and 208.50 mg/kg, respectively, which showed a downward trend with the deepening of soil layer. There was no significant difference in total P content among soil layers,
except for D1, D4 and D5 layers. (2) From the perspective of horizontal distribution, the total nitrogen content in
the study area was higher in the middle and north, and lower in the east and southwest. From the perspective of
vertical distribution, the total phosphorus content in the D1-D3 layer was significantly higher than that in the D4
and D5 layers, but the total phosphorus content did not change significantly with the deepening of soil depth. To
study the spatial distribution of forest soil total phosphorus in the lower reaches of Xijiang River Basin, and to
predict the content and spatial distribution of forest soil total phosphorus in the typical lower reaches of Xijiang
River basin is not only helpful to understand the forest community structure and ecosystem process, but also of
great significance to regional woodland management and management. |
| Key words: Xijiang River forest soil soil total phosphorus spatial distribution |
