地理研究 ›› 2010, Vol. 29 ›› Issue (10): 1863-1869.doi: 10.11821/yj2010100014

• 环境与生态 • 上一篇    下一篇

黄土高原沟壑区苹果基地退果还耕的生态水分效应

何福红1,3, 蒋卫国2, 黄明斌3   

  1. 1. 鲁东大学地理与规划学院,烟台 264025;
    2. 北京师范大学地表过程与资源生态国家重点实验室, 北京 100875;
    3. 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, 杨陵 712100
  • 收稿日期:2009-12-21 修回日期:2010-04-23 出版日期:2010-10-20 发布日期:2010-10-20
  • 通讯作者: 蒋卫国(1975-),男,博士。主要从事遥感与GIS在环境与灾害遥感应用研究。E-mail:jwg@ires.cn
  • 作者简介:何福红(1978-),男,湖南衡阳人,博士,副教授。主要从事土壤侵蚀与环境演变及3S技术应用研究。E-mail:fuhonghe112@126.com 。
    蒋卫国(1975-),男,博士。主要从事遥感与GIS在环境与灾害遥感应用研究。E-mail:jwg@ires.cn
  • 基金资助:

    国家自然科学基金资助项目(40471062,41001160);鲁东大学基金资助项目(LY20063201);鲁东大学创新团队资助项目(08-CXA004);鲁东大学学科建设经费资助

Ecological water effect of returning orchard to cultivated land in apple base of gully region of the Loess Plateau

HE Fu-hong1,3, JIANG Wei-guo2, HUANG Ming-bin3   

  1. 1. College of Geography and Planning, Ludong University, Yantai 264025, Shandong, China;
    2. State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing 100875, China;
    3. State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Institute of Soil and Water Conservation, CAS &|MWR, Yangling 712100, Shaanxi, China
  • Received:2009-12-21 Revised:2010-04-23 Online:2010-10-20 Published:2010-10-20

摘要:

近年来,黄土高原沟壑区许多果园已经退化,需要重新退果还耕,但其生态水分效应尚不明了。以陕西长武县王东沟小流域典型果园为对象,选取了盛果期果园、退化果园和退果还耕等3种土地利用方式,分析1986、2002和2009年三期土壤水分数据,研究退化果园还耕的生态水分效应。结果表明:退化果园和退果还耕地的平均含水量和土壤储水量显著高于同期的盛果期果园。果园退化后废弃和退果还耕,土壤水分会得到部分恢复。当土地利用从盛果期果园变化为耕地后,在200~600cm土层,其土壤平均含水量(10.62%)显著高于盛果期果园(8.53%)。生物利用型土壤干层仍然是盛果期果园、退化果园和退果还耕地尚待急需解决的严重的生态问题。

关键词: 黄土高原沟壑区, 退果还耕, 土壤水分, 生物利用型土壤干层

Abstract:

Recently, a lot of orchards in the gully region of the Loess Plateau have been degenerated, which should be returned to cultivated land. But the ecological water effect of returning orchard to cultivated land is still unclear. Taking the Wangdonggou watershed as a case study, this paper chose three land use types such as peak period orchard, waste orchard and cultivated land converted from orchard, the ecological water effects of returning orchard to cultivated land have been studied based on the soil moisture data of 1986, 2002 and 2009. The results show that: (1) The mean soil moisture content and water storage of wasted orchard and cultivated land converted from orchard are significantly bigger than those of the peak period orchard in 2009. With the orchard disuse or return to cultivated land, the soil moisture content will increase significantly. (2) When the land use changes from peak period orchard in 2002 to cultivated land in 2009, the mean soil moisture content of 200-600 cm profile of cultivated land converted from orchard is 10.62%, which is significantly bigger than that of the peak period orchard (8.53%). (3) Dried soil layer affected by biota use is a common soil water phenomenon in the peak period orchard, wasted orchard, and cultivated land converted from orchard, which is an urgent ecological problem that need to be resolved.

Key words: gully region of the Loess Plateau, returning orchard to cultivated land, soil moisture, dried soil layer affected by biota use