کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5744345 1618220 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of tree species on understory vegetation, herbaceous biomass and soil nutrients in a semi-arid savanna of Ethiopia
ترجمه فارسی عنوان
تاثیر گونه های درختی بر روی پوشش گیاهی زیرزمینی، زیست توده علفی و مواد مغذی خاک در یک ساوانا نیمه خشک اتیوپی
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
چکیده انگلیسی


- A. robusta had a higher species diversity and abundance than other tree species.
- Inside canopies had a higher species diversity and abundance than outside canopies.
- Inside canopies of A. robusta had a higher biomass yield of herbaceous vegetation.
- Most soil nutrients were higher under A. robusta than other tree species.
- Inside canopies had higher soil nutrients compared to outside tree canopies.

The effect of tree species on understory vegetation, herbaceous biomass and soil nutrients were studied in a semi-arid savanna of Ethiopia. Twenty large trees, from each of the species: Acacia robusta, Ziziphus spina-christi, and Balanites aegyptiaca, a total of 60 trees, and 480 samples were used for measuring understory vegetation, herbaceous biomass, and soil nutrients during the study. The inside tree canopies had a higher speciesdiversityand plant abundance than the outside tree canopies. Acacia robusta had a higher number of species and plant abundance in the understory vegetation compared to other tree species. The biomass yield of herbaceous vegetation under the inside canopies of A. robustawas higher than the canopies of other tree species. Similarly, most soil nutrient contents were higher under A. robusta than other tree species, and the inside canopies had a higher soil nutrient contents compared to outside tree canopies. Hence, the presence of larger trees in semi-arid African savannas confirmed to maintain more species composition and diversity of understory vegetation, higher herbaceous biomass and improved soil nutrients. Therefore, conservation of larger tree species is crucial for proper utilization and ecological stability of semi-arid African savannas under the changing climate and global warming.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Arid Environments - Volume 139, April 2017, Pages 76-84
نویسندگان
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