草地学报

›› 2006, Vol. 14 ›› Issue (3): 261-264.DOI: 10.11733/j.issn.1007-0435.2006.03.012

• 研究报告 • 上一篇    下一篇

陕北水蚀风蚀交错区苜蓿地土壤水分过耗与恢复

樊军, 邵明安, 王全九   

  1. 西北农林科技大学、中国科学院水利部水土保持研究所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
  • 收稿日期:2006-01-04 修回日期:2006-06-05 出版日期:2006-08-15 发布日期:2006-08-15
  • 通讯作者: 邵明安
  • 作者简介:樊军(1974- ),男,陕西府谷人,博士,助研,主要研究方向为土壤-植被-大气系统物质能量传输,E-mail:fanjuniswc@163.com
  • 基金资助:
    中国科学院水利部水土保持研究所知识创新前沿项目

Soil Water Restoration of Alfalfa Land in the Wind-water Erosion Crisscross Region on the Loess Plateau

FAN Jun, SHAO Ming-an, WANG Quan-jiu   

  1. State Key Laboratory of Soil Erosion and Arid-land Farming on the Loess Plateau, the Institute of Soiland Water Conservation, the Chinese Academy of Sciences, Northwest A&F University, Yangling, Shaanxi Province, 712100, China
  • Received:2006-01-04 Revised:2006-06-05 Online:2006-08-15 Published:2006-08-15

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摘要： 采用野外定位观测法研究水蚀风蚀交错区苜蓿(Medicago sativa)草地土壤水分在天然降水作用下的恢复过程。结果显示:苜蓿地翻耕后,在降水作用下土壤水分有明显的恢复过程,第一年,150cm以上土壤水分得到一定恢复,第二年深度达到300cm,但上层土壤含水量并未增加;该地块植被大量消耗土壤储水导致土壤干燥化,高耗水植被消除后,土壤含水量逐渐增加。

关键词: 水蚀风蚀交错区, 苜蓿草地, 土壤水分, 恢复

Abstract: By a field positioning observation,we studied soil moisture restoration after rainfalls in the cultivated alfalfa pasture of the wind-water erosion crisscross region of the Loess Plateau.Results show that following a rainfall the ploughed alfalfa land had obviously restored much water.In the year after the land plough,moisture of soil 150cm depth down from surface restored considerably.In the next year,though soil water of 300cm depth from surface restored after a rainfall,the upper soil water did not increase.The water consuming vegetation had ingested most of the soil water,leading to the aridity of the land.Removal of the water-consuming vegetation would gradually restore the soil water.

Key words: wind-water erosion crisscross region, Cultivated alfalfa pasture, Soil moisture, Recovery

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