Spatio-Temporal Patterns of Water Table and Vegetation Status of a Deserted Area
| العنوان: | Spatio-Temporal Patterns of Water Table and Vegetation Status of a Deserted Area |
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| المؤلفون: | Limin Duan, Tingxi Liu, Xixi Wang, Yanyun Luo |
| المصدر: | Water Volume 7 Issue 10 Pages 5788-5805 Water, Vol 7, Iss 10, Pp 5788-5805 (2015) |
| بيانات النشر: | MDPI AG, 2015. |
| سنة النشر: | 2015 |
| مصطلحات موضوعية: | Hydrology, lcsh:TD201-500, geography, lcsh:Hydraulic engineering, geography.geographical_feature_category, Water table, Geography, Planning and Development, Drainage basin, Horqin Sandy Land, Vegetation, Aquatic Science, Biochemistry, lcsh:Water supply for domestic and industrial purposes, lcsh:TC1-978, vegetation, Thematic Mapper, spatio-temporal patterns, Evapotranspiration, groundwater, Environmental science, Moderate-resolution imaging spectroradiometer, Precipitation, Groundwater, Water Science and Technology |
| الوصف: | Understanding groundwater-vegetation interactions is crucial for sustaining fragile environments of desert areas such as the Horqin Sandy Land (HSL) in northern China. This study examined spatio-temporal variations in the water table and the associated vegetation status of a 9.71 km2 area that contains meadowland, sandy dunes, and intermediate transitional zones. The depth of the water table and hydrometeorologic parameters were monitored and Landsat Thematic Mapper (TM) and Moderate Resolution Imaging Spectroradiometer (MODIS) data were utilized to assess the vegetation cover. Spatio-temporal variations over the six-year study period were examined and descriptive groundwater–vegetation associations developed by overlaying a water table depth map onto a vegetation index map derived from MODIS. The results indicate that the water table depends on the local topography, localized geological settings, and human activities such as reclamation, with fluctuations occurring at annual and monthly scales as a function of precipitation and potential evapotranspiration. Locations where the water table is closer to the surface tend to have more dense and productive vegetation. The water table depth is more closely associated with vegetative density in meadowlands than in transitional zones, and only poorly associated with vegetation in sandy dunes. |
| وصف الملف: | application/pdf |
| تدمد: | 2073-4441 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0f8b0b3187a2687cf2c71b0b60d4d4f9Test https://doi.org/10.3390/w7105788Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....0f8b0b3187a2687cf2c71b0b60d4d4f9 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20734441 |
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