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| Content Provider | Springer Nature Link |
|---|---|
| Author | Zhou, Hai Zhao, Wenzhi Yang, Qiyue |
| Copyright Year | 2016 |
| Abstract | Duplex soils, consisting of a sandy surface soil (A-horizon) and silty-clay subsoil (B-horizon), occur in a boundary area between oasis and desert in northwestern China and create a challenging habitat for restoration of plant growth. We conducted an experiment in a 10-year-old H. ammodendron plantation forest to determine the influence of physical properties of duplex soil on water infiltration and plant root growth. We used a trenching method to assess root biomass, and classified roots into two diameter classes: fine (<2 mm) and coarse (>2 mm). Following a 26.7 mm rain event, water infiltrated to the B- horizon; further deep percolation was hindered by low hydraulic conductivity, so that B horizon remained at high available soil moisture for an extended period of time. Root biomass increased rapidly in, or very close to the B horizon, especially for coarse roots. The subsoil formed a barrier to root penetration, but may also reflect the accumulation of water resources at the boundary between the A- and B-horizon. Shoot growth and root distribution, shrub height and canopy area, and total root biomass were negatively correlation with depth to the B horizon, and that was reflected by quadratic functions. We conclude that the texture and structure of duplex soils influenced the soil environment for water infiltration and storage, indicating that the B-horizon underlying sand in duplex soils is advantageous for the growth, and development of planted sand-stabilizing vegetation. These results have important implications for sustainable development of sand-fixing plantations in desert ecosystems. |
| Starting Page | 673 |
| Ending Page | 681 |
| Page Count | 9 |
| File Format | |
| ISSN | 09123814 |
| Journal | Ecological Research |
| Volume Number | 31 |
| Issue Number | 5 |
| e-ISSN | 14401703 |
| Language | English |
| Publisher | Springer Japan |
| Publisher Date | 2016-06-30 |
| Publisher Place | Tokyo |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Soil texture Soil properties Root biomass and distribution Water infiltration Water storage Ecology Plant Sciences Zoology Evolutionary Biology Behavioral Sciences Forestry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Ecology, Evolution, Behavior and Systematics |
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