自然资源学报 ›› 2015, Vol. 30 ›› Issue (3): 459-469.doi: 10.11849/zrzyxb.2015.03.009

• 资源评价 • 上一篇    下一篇

极端强降雨条件下黄土丘陵沟壑区不同植被类型土壤水分特征

尹秋龙1, 焦菊英1,2, 寇萌2,3   

  1. 1. 西北农林科技大学林学院, 陕西杨凌712100;
    2. 中国科学院、水利部水土保持研究所, 陕西杨凌712100;
    3. 中国科学院大学, 北京100049
  • 收稿日期:2014-03-24 修回日期:2014-07-21 发布日期:2015-03-23
  • 通讯作者: 焦菊英(1965-),女,研究员,主要研究方向为植被恢复与水土保持环境效应评价.E-mail:jyjiao@ms.iswc.ac.cn E-mail:jyjiao@ms.iswc.ac.cn
  • 作者简介:尹秋龙(1988-),男,硕士研究生,主要从事流域生态学研究.E-mail:yinql1988@163.com
  • 基金资助:

    国家自然科学基金面上项目(41371280);国家自然科学基金重点项目(41030532).

The Soil Moisture Characteristics under Different Vegetation Types after Extremely Heavy Rainfall on the Hilly-gullied Loess Plateau

YIN Qiu-long1, JIAO Ju-ying1,2, KOU Meng2,3   

  1. 1. College of Forestry, Northwest A&F University, Yangling 712100, China;
    2. Institute of Soil and Water Conservasion, CAS and Ministry of Water Resources, Yangling 712100, China;
    3. Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2014-03-24 Revised:2014-07-21 Published:2015-03-23

摘要:

为了解黄土丘陵沟壑区极端强降雨条件下土壤水分与植被之间的关系,对2013 年7 月极端强降雨条件下黄土丘陵沟壑区5 种主要植物群落,即刺槐(Robinia psendoacacia)、柠条(Caragana intermedia)、铁杆蒿(Artemisia gmelinii)、长芒草(Stipa bungeana)、白羊草(Bothriochlo aischaemun)群落的土壤水分进行了调查与分析,结果表明:①极端强降雨下,植被是影响土壤含水量的主要因素;②草本群落的土壤水分明显好于人工林,其中长芒草群落的土壤含水量、土壤贮水量和土壤有效贮水量均最高,分别为17.8%、961.2 mm和691.2 mm,郁闭度最大的31 龄林土壤水分最差;③人工林地土壤水分可补充至300 cm左右,草本群落土壤水分可补充至500 cm左右,人工林地深层土壤水分的恢复仍十分困难.

关键词: 流域生态, 土壤水分, 植被类型, 极端降雨, 黄土丘陵沟壑区

Abstract:

In order to understand the relationship between soil moisture and vegetation after extremely heavy rainfall on the hilly-gullied Loess Plateau, the soil moisture was observed and analyzed under five different vegetation types (Robinia psendoacacia, Caragana intermedia, Artemisia gmelinii, Stipa bungeana and Bothriochloa ischaemun) after a series of heavy rainfall in July 2013. The results show that: 1) Vegetation became the main factor that affected soil moisture after extremely heavy rainfall. 2) The soil moisture under grassland was higher than that under the artificial forests. The soil under Stipa bungeana had the highest soil moisture, soil water storage and available soil water storage, which were 17.8%, 961.2 mm and 691.2 mm, while the soil under 31 years old Robinia psendoacacia had the lowest soil moisture. 3) The infiltration depth of soil under artificial forests was about 300 cm, and about 500 cm under the grassland. It was difficult to recover the moisture in the deep soil under the artificial forest.

Key words: watershed ecology, soil moisture, vegetation type, extremely heavy rainfall, hillygullied Loess Plateau

中图分类号: 

  • S152.7