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| 黄土高原土壤干层形成原因分析 | |
| 引用本文： | 陈宝群,赵景波,李艳花.黄土高原土壤干层形成原因分析[J].地理与地理信息科学,2009,25(3). |
| 作者姓名： | 陈宝群 赵景波 李艳花 |
| 作者单位： | 1. 陕西师范大学旅游与环境学院,陕西,西安,710062 2. 陕西师范大学旅游与环境学院,陕西,西安,710062;中国科学院地球环境研究所黄土与第四纪地质国家重点实验室,陕西,西安710075 3. 西安财经学院管理学院,陕西,西安,710100 |
| 摘 要： | 以丰水年洛川人工林地深层土壤水分恢复为依据,采用高精度土壤含水量测量与逐层分析技术,以含水量变化率为主要指标,研究洛川2004年1月-2005年5月不同植被土壤水分的季节变化与水量平衡.结果显示,降水渗深以内表层土壤水分受气候和植被生长影响,呈明显季节变化;渗深以下深层土壤水分,中产农田和梨树林砍伐后基本维持平衡,苹果林地持续减少并以春季减少最多.研究表明,黄土高原深层土壤水分呈低水平循环状态,易形成土壤干层,而季节干旱是土壤干层形成的直接驱动力;"低降水、高蒸发"的气候特点是黄土高原土壤干层形成的决定因素,半湿润半干旱气候中的干旱特征对黄土高原自然地理环境产生广泛而深刻的影响. |
| 关 键 词： | 黄土高原 土壤干层 季节变化 干旱特征 |
Research on Causes of Dried Soil Layer in the Loess Plateau |
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| CHEN Bao-qun,ZHAO Jing-bo,LI Yan-hua.Research on Causes of Dried Soil Layer in the Loess Plateau[J].Geography and Geo-Information Science,2009,25(3). | |
| Authors: | CHEN Bao-qun ZHAO Jing-bo LI Yan-hua |
| Institution: | 1.College of Tourism and Environment;Shaanxi Normal University;Xi'an 710062;2.State Key Laboratory of Loess and Quaternary Geology;Institute of Earth Environment;CAS;Xi'an 710075;3.College of Management;Xi'an University of Finance and Economics;Xi'an 710100;China |
| Abstract: | According to the recovered soil moisture content in deep soil layers in Luochuan in rainy year,which has been measured by high precision measurement and analyzed layer by layer,the change of soil moisture content under different artificial vegetation in different seasons was studied from January 2004 to May 2005.The result shows that the soil moisture content of surface layer changed obviously with season which was caused by climate and plant growing.It is also shown that the soil moisture content was stabl... |
| Keywords: | Loess Plateau dried soil layer seasonal change drought character |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |