Arid
DOI10.2495/RAV110041
Is shrub removal an appropriate management strategy in shrub-encroached woodlands?
Daryanto, S.; Eldridge, D. J.
通讯作者Daryanto, S.
会议名称3rd International Conference on Management of Natural Resources, Sustainable Development and Ecological Hazards
会议日期2011
会议地点MALAYSIA
英文摘要

Encroachment of shrubs into open woodland is a global phenomenon affecting drylands worldwide. Encroachment generally reduces pastoral productivity by reducing grass cover for livestock. Consequently, a range of mechanical methods such as ploughing have been used in an attempt to remove encroaching shrubs. Apart from the high cost, ploughing has been shown to have deleterious and often inconsistent effects on woodland ecosystems. Our work showed that soil under shrub patches contain generally higher levels of nutrients and are preferred sites of animal disturbance. However, ploughing and grazing reduced the number of vegetated patches, altered landscape heterogeneity, and often had species-specific effects, potentially leading to a dominance of ploughing- or grazing-resistant shrub species. With ploughing resulting in reductions in soil nutrients, long-term increases in shrub density rather than reductions, and the lack of sustained grass cover, we suggest that mechanical shrub removal is an inappropriate method for managing shrub-encroached woodlands. In the context of pastoralism, alternative approaches such as time-controlled grazing or rotational grazing (similar to transhumant systems) would be more appropriate management strategies. An alternative perspective, which is increasing in popularity, is to value encroached woodlands in terms of the ecosystem benefits they provide. These include habitat for animals, sinks for carbon dioxide, ecotourism and water supplies.


英文关键词ploughing grazing arid shrubs soil disturbance woodland Australia spatial distribution land management
来源出版物MANAGEMENT OF NATURAL RESOURCES, SUSTAINABLE DEVELOPMENT AND ECOLOGICAL HAZARDS III
ISSN1743-3541
出版年2012
卷号148
页码37-46
EISBN978-1-84564-533-5
出版者WIT PRESS
类型Proceedings Paper
语种英语
国家Australia
收录类别CPCI-S
WOS记录号WOS:000304040400004
WOS关键词GRAZING SYSTEMS ; VEGETATION ; QUEENSLAND ; CARBON ; DESERT ; RECRUITMENT ; RECOVERY
WOS类目Ecology ; Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
资源类型会议论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/300607
作者单位Univ New S Wales, Evolut & Ecol Res Ctr, Sch Biol Earth & Environm Sci, Sydney, NSW 2052, Australia
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Daryanto, S.,Eldridge, D. J.. Is shrub removal an appropriate management strategy in shrub-encroached woodlands?[C]:WIT PRESS,2012:37-46.
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