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首页> 外文期刊>Tropical Ecology >Impact of African elephants on baobab (Adansonia digitata L.) population structure in northern Gonarezhou National Park, Zimbabwe
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Impact of African elephants on baobab (Adansonia digitata L.) population structure in northern Gonarezhou National Park, Zimbabwe

机译：非洲象对津巴布韦北部戈纳雷洲国家公园猴面包树（猴面包树）种群结构的影响

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摘要

The impact of African elephant (Loxodonta africana) on population structure of baobab trees (Adansonia digitata L.) was assessed in northern Gonarezhou National Park (GNP), southeast Zimbabwe. Baobabs were sampled in March 2008 and September 2012 using 11 randomly laid belt transects of variable length within 1 km of the eastern and western sections of the Runde River and also away (> 1 km) from the water sources. A total of 223 baobabs, 130 near permanent water sources and 93 away from permanent water sources, were sampled. Baobab density did not significantly differ across the two study sites. Furthermore, there were no significant differences in girth at breast height between the two study sites. Results of the present study suggest that elephants target large baobabs (girth >= 5 m).,In contrast, significant difference in baobab damage was recorded between the two sites. A single dead baobab tree was encountered at a site away from water sources. A larger proportion of elephant damaged baobabs was located closer to permanent water sources. However, baobab recruitment and regeneration was higher in areas close to permanent water sources than in distant areas. Management should come up with strategies to monitor vegetation changes in order to avoid loss of baobabs and other tree species.
机译：在津巴布韦东南部的加纳雷洲国家公园（GNP）北部，评估了非洲象（Loxodonta africana）对猴面包树（Adansonia digitata L.）种群结构的影响。猴面包树是在2008年3月和2012年9月使用随机分布的11个变长带状样带取样的，这些样带的长度在Runde河的东部和西部1公里以内，并且距水源（> 1 km）。总共采样了223个猴面包树，其中130个位于永久水源附近，而93个远离永久水源。两个研究地点的猴面包树密度没有显着差异。此外，在两个研究部位之间，胸高的围长没有显着差异。本研究的结果表明，大象瞄准的是大猴面包树（周长> = 5 m）。相反，在两个地点之间记录到猴面包树的伤害有显着差异。在远离水源的地点遇到一棵枯死的猴面包树。被大象破坏的猴面包树中有较大比例位于靠近永久水源的地方。但是，在靠近永久水源的地区，猴面包树的募集和更新要比遥远的地区高。管理层应提出监测植被变化的策略，以避免猴面包树和其他树种的损失。

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