| 程自豪,张嘉玲,米美霞,王冲宁,徐慧云.太原市典型林地土壤饱和导水率研究[J].林业调查规划,2025,50(3):121-129 |
| 太原市典型林地土壤饱和导水率研究 |
| Saturated Hydraulic Conductivity of Typical Forest Soils in Taiyuan City |
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| DOI： |
| 中文关键词: 土壤饱和导水率(KS) 土壤理化性质 林地类型 土壤入渗性能 水源涵养 |
| 英文关键词: saturated hydraulic conductivity (KS) soil physicochemical property forest types soil infiltration
capacity water conservation |
| 基金项目:国家自然科学基金项目“砾石对植物根系吸水过程的影响及机制”(41907012);山西农业大学博士科研启动基金“黄土砾石对
植物根系生长影响的试验研究”(2017YJ02). |
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| 中文摘要: |
| 以太原市10 种代表性林地类型土壤为研究对象,用环刀和土钻取样,测定土壤理化性质和土壤饱和导水率(KS),并结合相关性分析和主成分分析,探究影响土壤KS的主要因素。结果表明,刺槐纯林的土壤KS最高,与刺槐×油松混交林、刺槐×白皮松不存在显著差异,与其它林地均存在
显著差异;土壤KS与土壤容重呈显著负相关关系(r= -0.870),与土壤含水量(r= 0.491)、有机质
含量(r=0.827)、毛管孔隙度(r=0.673)、总孔隙度(r=0.769)、全氮含量(r=0.604)呈显著正相关
关系,其中土壤容重和总孔隙度是影响土壤KS的主导因素,土壤颗粒组成为次要因素;刺槐×油松混交林土壤导水性能的排名最高,刺槐×白皮松混交林和刺槐纯林次之,建议在太原市森林城市建设中优先考虑营造这3 种林地,同时减少人为干扰,以达到降低径流量和涵养水源的目的。 |
| 英文摘要: |
| This study investigated the soils of 10 representative forest types in Taiyuan City. Soil samples
were collected using cutting rings and soil augers to determine soil physicochemical properties and saturated
hydraulic conductivity (KS). Correlation analysis and principal component analysis were conducted to explore
the main factors influencing KS. The results showed that the pure black locust forest had the highest
KS, with no significant difference compared to Robinia pseudoacacia × Pinus tabuliformis mixed forests and
Robinia pseudoacacia × Pinus bungeana mixed forests, but significant differences compared to other forest
types. KS exhibited a significant negative correlation with soil bulk density (r= -0.870) and significant
positive correlations with soil water content (r=0.491), organic matter content (r=0.827), capillary porosity
(r=0.673), total porosity (r=0.769), and total nitrogen content (r= 0.604). Soil bulk density
and total porosity were identified as the dominant factors influencing soil KS, while soil particle composition was a secondary factor. Among the forest types, Robinia pseudoacacia × Pinus tabuliformis mixed forest ranked
highest in hydraulic conductivity, followed by Robinia pseudoacacia × Pinus bungeana mixed forest and the
pure Robinia pseudoacacia forest. It is recommended to prioritize these three forest types in Taiyuan′s urban
forest construction while minimizing human disturbance to reduce runoff and enhance water conservation. |
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