ZHAO Yang-yi,DU Xu.Study on Soil Infiltration Capability under Different Vegetation Models in Rocky-Desertification Areas of Karst in Eastern Part of Yunnan Province[J].Research of Soil and Water Conservation,2014,21(04):45-49.
滇东石漠化地区不同植被模式土壤渗透性研究
- Title:
- Study on Soil Infiltration Capability under Different Vegetation Models in Rocky-Desertification Areas of Karst in Eastern Part of Yunnan Province
- Keywords:
- karst; rocky-desertification; soil infiltration capability; vegetation restoration morel; eastern part of Yunnan Province
- 分类号:
- S715.3
- 摘要:
- 利用环刀法，对滇东喀斯特石漠化地区4种不同植被治理模式样地（以裸地为对照）的土壤渗透性进行研究，结果表明：（1）各植被治理模式土壤渗透性指标均好于对照裸地。0—20 cm土层以针阔混交林模式的初渗率最大，灌草植被模式的土壤稳渗率、平均渗透速率和60 min渗透总量要优于其它模式；20—40 cm以针叶林模式的土壤渗透性各项指标为最大，其次分别为针阔混交林模式、阔叶林模式和灌草模式，裸地最差。（2）不同模式及不同土壤层次对土壤入渗能力影响均显著（P=0.003和P=0.046），植被治理模式对土壤入渗能力影响显著性更高。（3）Kostiakov方程和通用经验方程对土壤入渗过程的拟合效果最好，比较适用于本研究区域不同植被模式土壤入渗特征的模型描述和入渗过程的预测，Philip方程拟合效果次之，Horton方程效果最差。
- Abstract:
- Cutting ring infiltration method was used to quantitatively measure the soil infiltration capacity under 4 kinds of different vegetation models in rocky-desertification areas of the karst in eastern part of Yunnan Province. The results indicated that: (1) the infiltration capability of all forest plots was higher than that of bare land, the conifer initial infiltration rate of the 0—20 cm soil layer to the maximum mode were the best, and the steady infiltration rate, the average penetration rate and 60min total penetration of the shrub and grass vegetation patterns are superior to other modes; the indicators of the 20—40 cm of the coniferous forest mode could be the largest, followed by mixed coniferous mode, shrub and grass and broadleaf forest pattern mode; (2) the soil infiltration capability values were significantly different in different vegetation models and different soil layers in the same model. (P=0.003,P=0.046); (3) a common empirical infiltration model and Kostiakov model could describe the best performance on the infiltrating processes in the eight forest models, followed by the Philip model and the Horton model.
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备注/Memo
收稿日期:2013-10-30;改回日期:2013-11-16。
基金项目:云南省教育厅研究项目（2013Y114）；西南林业大学科研启动金项目（111168）
作者简介:赵洋毅(1980-),男,吉林长春人,博士,讲师,主要从事水土保持和生态恢复方面研究。E-mail:yyz301@foxmail.com