IDEAS home Printed from https://ideas.repec.org/a/ags/asagre/209847.html
   My bibliography  Save this article

The Soil Moisture and Grain Size Characteristics of Micro-area: A Case Study of Minqin Oasis-Desert Ecotone

Author

Listed:
  • GUO, Ting
  • XU, Xiaoying
  • ZHAO, Peng
  • QIAO, Yu
  • FU, Guiquan

Abstract

To elaborate soil moisture and grain size characteristics of 3 typical micro-areas in Minqin oasis-desert ecotone, samples were collected in runoff generation area and accumulated area using soil profile and multi-point sampling method, for soil moisture and physicochemical property analysis. Research results that (i) water accumulation trace of accumulated area is significant and the vegetation coverage is larger than the runoff generation area. The crust development in clay sand barrier + Haloxylon ammodendron forest accumulated is better than runoff generation area, while the situation is contrary in Nitraria tangutorum sand dune lowland and clay flat land. (ii) Moisture of accumulated area in fixed Nitraria tangutorum sand inter-dune lowland is better than the runoff generation area; the moisture of accumulated area in clay flat land topsoil is significantly better than the runoff generation area, while the topsoil moisture of clay sand barrier + Haloxylon ammodendron forest is better in the runoff generation area than in the accumulated area. (iii) Soil moisture of accumulated area in 3 types of micro-areas is in the range of 20-40 cm; the fixed Nitraria tangutorum sand inter-dune lowland is better than clay flat land and clay sand barrier + Haloxylon ammodendron forest, while the lowest moisture of corresponding runoff generation area is basically consistent with the depth. (iv) The topsoil clay and powder content in accumulated area of fixed Nitraria tangutorum sand inter-dune lowland is lower than the runoff generation area, while the fine sand content in deep layer of runoff generation area is greater than the accumulated area; soil in two areas of clay flat land mainly consists of coarse and fine sand, and clay particles are better in runoff generation area than in accumulated area. Soil in the clay sand barrier + Haloxylon ammodendron forest is mainly coarse sand and the structure is single. In sum, through adjusting allocation of rainfall, micro-areas influence soil moisture and grain size distribution, and further influence spatial - temporal distribution of vegetation in sand micro-areas.

Suggested Citation

  • GUO, Ting & XU, Xiaoying & ZHAO, Peng & QIAO, Yu & FU, Guiquan, 2015. "The Soil Moisture and Grain Size Characteristics of Micro-area: A Case Study of Minqin Oasis-Desert Ecotone," Asian Agricultural Research, USA-China Science and Culture Media Corporation, vol. 7(07), pages 1-6, July.
    • Handle: RePEc:ags:asagre:209847
    DOI: 10.22004/ag.econ.209847
    as

    Download full text from publisher

    File URL: https://ageconsearch.umn.edu/record/209847/files/12.PDF
    Download Restriction: no
    File URL: https://libkey.io/10.22004/ag.econ.209847?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    More about this item

    Keywords

    Agribusiness;

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:ags:asagre:209847. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: AgEcon Search (email available below). General contact details of provider: .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.