|黄琳琦1,2; 向业凤3,4; 魏孝荣1,2; 张兴昌1,2
|Source Publication||干 旱 地 区 农 业 研 究
地土壤有机质和饱和导水率显著高于针叶林地，土壤容重显著低于针叶林地，阔叶林地 0 ～10 cm 和 10 ～20 cm 土
层土壤有机质和饱和导水率分别比针叶林地高 27． 7%、21． 2% 和 38． 0%、42． 2%，容重比针叶林地低 13． 8% 和
7． 6%; 高海拔处林地土壤有机质含量较高，容重较低; 研究区土壤饱和导水率不受海拔影响，土壤水稳性团聚体
分布不受林型和海拔的影响; 阔叶林地 0 ～20 cm 土层土壤平均重量直径和几何平均直径平均值分别比针叶林地
高 3． 46%和 5． 21%，但不受海拔影响，大团聚体数量与饱和导水率极显著正相关。研究表明六盘山林区阔叶林地
The objectives of this study were to explore the distribution of soil physical properties and their in-
fluencing factors in forest of the Liupan Mountains． The distribution of major soil properties in forest of Liupan
Mountains，and the relationships between soil physical properties，elevation and forest species were studied． Addi-
tionally，the relationships among soil physical properties were analyzed． The results showed that the contents of or-
ganic matter and saturated hydraulic conductivity were significantly higher in soils under broadleaf forest than those
under conifer forest，but the bulk density was lower in soils under broadleaf forest than that under conifer forest．
The organic matter content and saturated hydraulic conductivity in broadleaf forest were 27． 7% and 21． 2% higher
in 0 ～10 cm and 10 ～20 cm depth，and 38% and 42． 2% higher in 0 ～10 cm and 10 ～20 cm depth，respective-
ly，than those in conifer forest． However，the soil bulk densities under broadleaf forest in 0 ～10 cm and 10 ～20
cm depth were 13． 8% and 7． 6% lower than those under conifer forest，respectively． Further，organic matter con-
tent was relatively higher，while bulk density was relatively lower in soils at higher elevation than those in lower ele-
vation conditions． Besides the saturated hydraulic conductivity was not affected by elevation conditions． The mean
values of MWD and GMD through 0 ～20 cm depth were 3． 46% and 5． 21% higher in broadleaf soils than conifer
soils，respectively． But they were unaffected by elevation conditions． Correlation analysis revealed that the amount
of macroaggregate was signifcantly positively correlated with saturated hydraulic conductivity． This finding indicated
that the physical properties of soils under broadleaf forest were better than those under conifer forest in the Liupan
Mountain region by the increasing amount of macroaggregate．
|Affiliation||1.西北农林科技大学资源环境学院，陕西 杨凌 712100|
2.西北农林科技大学黄土高原土壤侵蚀与旱地农业国家重点实验室，陕西 杨凌 712100
3.四川农业大学林学院，四川 雅安 625014
黄琳琦,向业凤,魏孝荣,等. 六盘山林区土壤物理性质分布特征[J]. 干 旱 地 区 农 业 研 究,2015,33(1):60-65.
黄琳琦,向业凤,魏孝荣,&张兴昌.(2015).六盘山林区土壤物理性质分布特征.干 旱 地 区 农 业 研 究,33(1),60-65.
黄琳琦,et al."六盘山林区土壤物理性质分布特征".干 旱 地 区 农 业 研 究 33.1(2015):60-65.
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