CHEN Jialin,KONG Yuhua,PEI Bing,et al.Characteristics and Influencing Factors of Soil Infiltration Under Different Vegetation Types in Hilly Region of Taihang Mountains[J].Research of Soil and Water Conservation,2016,23(04):60-65.
太行山低山丘陵区不同植被类型土壤渗透特性及影响因素
- Title:
- Characteristics and Influencing Factors of Soil Infiltration Under Different Vegetation Types in Hilly Region of Taihang Mountains
- Keywords:
- soil infiltration; vegetation restoration types; soil physical and chemical properties; root structure
- 分类号:
- S714.7
- 摘要:
- 为了探讨太行山低山丘陵区不同植被恢复类型土壤水分入渗规律及影响因素，采用双环刀入渗法和相关分析、典型相关分析方法，研究了该区域不同植被群落表层土壤的入渗特性，对土壤入渗过程进行模拟，并深入探讨了土壤入渗的影响因素。结果表明：（1）从裸地、草地、灌草地、灌丛到乔灌林地，土壤渗透性能不断增加；不同植被类型0—10 cm层土壤渗透速率大于10—20 cm层土壤渗透速率；土壤初渗速率和稳渗速率最大值均出现在侧柏林地，分别为5.96 mm/min和4.76 mm/min。（2）土壤入渗模型拟合结果表明Philip入渗模型对不同植被类型土壤入渗过程拟合效果最好，Kostiakov入渗模型拟合效果次之，Horton入渗模型拟合效果最差，不适合用于描述该区域土壤入渗特征。（3）土壤渗透特性指标与土壤容重、总孔隙度、有机质质量分数、根质量密度、根体积密度、根平均直径存在显著相关关系（p < 0.05）；土壤理化性质指标和根系结构指标中对土壤渗透性能产生影响作用最大的分别是总孔隙度和根平均直径，典型相关负荷量分别为1.299，1.084。
- Abstract:
- To analyze characteristics and influencing factors of soil infiltration under different vegetation types in hilly region of Taihang Mountains, soil infiltration processes of different vegetation types were simulated to examine their characteristics and their influencing factors were also explored through double-ring method, correlation analysis and canonical correlation analysis. The results showed that:(1) soil infiltration capability increased in the order:bare-land < grassland < bushwood < bushwood land < arbor and bushwood land, which was higher in 0—10 cm layer than in 10—20 cm layer under different vegetation types, the highest mean value of initial soil infiltration rate(5.96 mm/min)and stable soil infiltration rate(4.76 mm/min)appeared in Platycladus orientalis land; (2) simulated infiltration processes with Philip and Kostiakov models showed that these two models described the infiltration better than Horton model; (3) there was the significant relationship (p < 0.05) between soil permeability index and soil bulk density, total porosity, soil organic matter content, root weight density, root volume density, root average diameter. With respect to the soil infiltration capacity, the most important indicators of soil physical and chemical characteristics and root structure were total porosity and root average diameter, and the canonical correlation coefficients of which were 1.299 and 1.084, respectively.
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备注/Memo
收稿日期:2015-12-30;改回日期:2016-01-13。
基金项目:国家自然科学基金（31570613，41401206，41501331）
作者简介:陈家林(1990-),男,河南南召人,硕士研究生,研究方向:水土保持与荒漠化治理。E-mail:chen1jia2lin@126.com
通讯作者:杨喜田(1965-),男,河南长垣人,博士,教授,研究方向:水土保持与生态恢复。E-mail:xitianyang@aliyun.com