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首页> 外文期刊>World journal of agricultural sciences >Review on Expansion of Bush Encroachment and Mechanism to Control its Severity in Rangeland Ecosystem
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Review on Expansion of Bush Encroachment and Mechanism to Control its Severity in Rangeland Ecosystem

机译:浅谈丛林侵犯和机制控制其在牧场生态系统的严重程度

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摘要

Woody plant encroachment is considered a threat to rangelands because of the suppression of productivity of herbaceous plant species due to the increase of bush cover. Besides, its fragmenting effect narrows the home range of both domestic and native grazers. Thus, human communities and natural ecosystems worldwide are under siege from disproportionate increase of woody species in the range lands. Generally this may be caused by different factors, at different landscapes, by different plant species and with different effects. This shows that more has to be done for the bush encroachment to become under control. However, there is still paucity of information on how to control the destructive effects of bush encroachment on the rangelands directly and the cascading effect on the trophic chains indirectly. This calls for the need for reviewing the contemporary knowledge status regarding several methods to control the bush encroachment in the rangelands. In a broader context, biological, physical, chemical, burning and any combination of these are widely known methods to control bush encroachment, each with their own pros and cons.
机译:由于由于衬套覆盖的增加,因此由于抑制了草本植物物种的生产率而被认为是对牧场的威胁。此外,其片段化效果缩小了国内和原生格拉斯的家庭范围。因此,全世界的人类社区和自然生态系统受到范围土地中木质物种的不成比例的围攻。通常,这可能是由不同景观,不同植物物种和不同效果的不同因素引起的。这表明丛林侵占变得更加控制的更多信息。然而,仍然缺乏关于如何直接控制丛林侵蚀丛林侵占的破坏性影响的信息,以及间接地对营养链的级联影响。这呼吁审查当代知识状况,了解若干方法,以控制牧场在牧场侵犯丛林侵犯。在更广泛的背景下,生物,物理,化学,燃烧和这些的任何组合都是广泛的众所周知的方法,可以控制灌木侵蚀,每个方法都有自己的优点和缺点。

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