| 植被覆盖、放牧和季节对牧草种类组成和生物量的影响:以埃塞俄比亚南部Yabello牧场为例 |
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| 引用本文： | Yeneayehu FENETAHUN,徐新文,尤源,王永东.植被覆盖、放牧和季节对牧草种类组成和生物量的影响:以埃塞俄比亚南部Yabello牧场为例[J].资源与生态学报（英文版）,2020,11(2):159-170. |
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| 作者姓名： | Yeneayehu FENETAHUN 徐新文 尤源 王永东 |
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| 作者单位： | 中国科学院大学;中国科学院新疆生态与地理研究所 |
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| 基金项目： | The Funding Source Science and Technology Partnership Program,Ministry of Science and Technology of China(KY201702010);The China-Africa Joint Research Center Project of the Chines Academy of Science(SAJC201610). |
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| 摘 要： | Yabello牧场是埃塞俄比亚博拉纳的一个半干旱地区的牧场,目前面临着草场退化的严重挑战。植被覆盖的变化、过度放牧和季节性变化极大地影响了Yabello牧场的牧草组成和生物量。本文评估了植被覆盖、放牧和季节对Yabello牧场的牧草组成和生物量的影响。首先采用1 m×1 m的随机样方进行实验,根据植被覆盖类型和放牧变化选择样点,并对季节影响进行评估。使用SAS统计软件和MicrosoftExcel分析牧草组成、牧草高度和质量数据。本研究总共记录了26种草种,其中Chloris roxburghiana, Chrysopogon aucheri和Chrysopogon aucheri草种均表现出最高的平均单种覆盖高度和生物量产量。因此,建议将这些草种用于研究区域退化草地的恢复。研究结果还表明,植被覆盖类型、放牧和季节变化是决定牧草种类组成、牧草高度和生物量产量的关键因素。最后,研究结论还认为控制灌木丛植被并平衡放牧水平的可持续管理对于该地区的可持续牧草生产和生物多样性保护至关重要。
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| 关 键 词： | Yabello牧场 物种组成 生物量 放牧 牧草高度 雨季 旱季 |
| 收稿时间： | 2019-05-14 |
Effects of Vegetation Cover,Grazing and Season on Herbage Species Composition and Biomass: A Case Study of Yabello Rangeland,Southern Ethiopia |
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| Yeneayehu FENETAHUN,XU Xinwen,YOU Yuan,WANG Yongdong.Effects of Vegetation Cover,Grazing and Season on Herbage Species Composition and Biomass: A Case Study of Yabello Rangeland,Southern Ethiopia[J].Journal of Resources and Ecology,2020,11(2):159-170. |
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| Authors: | Yeneayehu FENETAHUN XU Xinwen YOU Yuan WANG Yongdong |
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| Institution: | 1. University of Chinese Academy of Science, Beijing 100049, China;2. State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institution of Ecology and Geography, Chinese Academy of Science, Urumqi 830011, China |
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| Abstract: | The Yabello rangeland is a semi-arid area in Borana, Ethiopia that is facing great degradation challenges. Increasing infestation of vegetation cover, over grazing and high seasonal variation have significantly affected the herbage composition and biomass in the Yabello rangeland. This study focused on assessing the effect of vegetation cover, grazing and season on both herbage composition and biomass in the Yabello rangeland. An experiment was conducted using randomized plots of 1m×1m. Sites were selected based on vegetation cover type and grazing variation, and seasonal impacts were also assessed. Data on herbage composition, height and mass with respect to those parameters were analyzed using SAS statistical software version 9.1(SAS Institute, 2001) and Microsoft Excel. A total of 26 grass species were recorded and Chloris roxburghiana Chrysopogon aucheri and Chrysopogon aucheri grass species showed the highest average single species cover height and biomass production, for all the sites among all parameters. As a result, those grass species are highly recommended for the rehabilitation of degraded rangeland in the study area. This study also showed that vegetation cover type grazing and seasonal variation were the key factors in determining herbage species composition, height and biomass production. Finally, we recommended that sustainable management which controls bush vegetation cover and balances grazing levels is essential for sustainable herbage production and biodiversity conservation in the area. |
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| Keywords: | Yabello rangeland species composition biomass bush land grazing herbage height rainy season dry season |
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