| 摘要: |
| 采用经典的土壤理化性质测定和滨海植被调查方法，对惠东港口海龟国家级自然保护区湿地
表层土壤理化性质及其与植被相关性展开研究。结果表明：湿地的表层土壤质地主要是砂土。盐度、含
水量、比重、容重以及孔隙度的变化范围分别是：0.13%~0.26%、1.61%~9.33%、1.46~2.84、1.14 ~1.57
g · cm-3
、1.00%~54.00%。pH 均为 7.00~7.50。有机质、有机碳、碱解氮、速效磷、速效钾、交换性钠的
变化范围分别为 1.60 ~22.93 g · kg-1
、0.88 ~13.30 g · kg-1
、13.80 ~155.70 mg · kg-1
、0.60 ~8.20 mg · kg-1
、
1.17 ~12.24 mg · kg-1 和 9.12 ~32.31 mg · kg-1
。表层土壤的盐度与交换性钠呈极显著的正相关性。比重与孔
隙度呈极显著正相关性。容重与碱解氮、速效钾、有机质和有机碳呈现显著负相关性。同时有机碳与有
机质、碱解氮和速效钾呈现极显著正相关性。有机质与碱解氮和速效钾呈现极显著正相关性。碱解氮与
速效钾呈现极显著正相关性，而速效钾与交换性钠表现出显著正相关性。湿地植被的丰富度指数乔木层
最高，草本层其次，灌木层最低。土壤有机质含量、有机碳含量与灌木层 Shannon-Wiener 多样性指数呈
显著正相关。 |
| 关键词: 海龟湾 湿地 土壤理化性质 相关性分析 植物 - 土壤反馈 |
| DOI： |
| 分类号: |
| 基金项目:自然资源事务管理——生态林业建设专项资金（2021-445986）；岭南师范学院红树林研究院开放课题（ZDXM01）。 |
|
| Soil Physicochemical Properties Analysis of Huidong Harbor Sea Turtle National Nature Reserve |
|
Duan JinXia1, LI Haiwen2, LI Zhiwen1, HE Rumi2, WANG Fumin1, ZHU Yixiu2
|
|
1.Huidong Sea Turtle National Reserve Management Bureau;2.School of Life Science and Technology, Lingnan Normal University
|
| Abstract: |
| The physicochemical properties of the surface soil and their correlation with vegetation in
Huidong Harbor Sea Turtle National Nature Reserve were studied in this paper by the classic assay method. The
results showed that the surface soil texture was mainly sandy. The salinity, water content, speciffc gravity, bulk
density and porosity of the surface soil varied from 0.13%-0.26%, 1.61%-9.33%, 1.46-2.84, 1.14-1.57 g · cm-3
,
1.00%-54.00%, respectively. The value of pH was 7.00-7.50. The ranges of soil organic matter, organic carbon,
alkali-hydrolyzed nitrogen, available phosphorus, available potassium and exchangeable sodium were 1.60-22.93
g · kg-1
, 0.88-13.30 g · kg-1
, 13.80-155.70 mg · kg-1
, 0.60-8.20 mg · kg-1
, 1.17-12.24 mg · kg-1
and 9.12-32.31 mg ·
kg-1
, respectively. There was a signiffcant positive correlation between salinity of soil and exchangeable sodium. The speciffc gravity correlated porosity with positive correlation. The bulk density was negatively correlated with
alkali-hydrolyzed nitrogen, available potassium, organic matter and organic carbon. Furthermore, organic carbon
and organic matter, alkali-hydrolyzed nitrogen and available potassium showed extremely significant positive
correlations. Organic matter was signiffcantly positive correlated with alkali-hydrolyzed nitrogen and available
potassium. The alkali-hydrolyzed nitrogen was significantly positive correlated with available potassium. And
available potassium showed a markedly positive correlation with exchangeable sodium. The richness of vegetation
was highest in tree layer, followed by herb layer and lowest in shrub layer. Soil organic matter content and organic
carbon content were positively correlated with Shannon-Wiener diversity index in shrub layer. |
| Key words: Turtle bay wetland soil physicochemical properties correlation analysis plant-soil feedback |
