Arid
DOI10.1046/j.1365-2664.1998.00319.x
Identifying trends in land degradation in non-equilibrium rangelands
Pickup, G; Bastin, GN; Chewings, VH
通讯作者Pickup, G
来源期刊JOURNAL OF APPLIED ECOLOGY
ISSN0021-8901
出版年1998
卷号35期号:3页码:365-377
英文摘要

1. Change in environmental conditions in the complex non-equilibrium rangelands of arid Australia is difficult to monitor. We show how trends in rangeland condition can be identified from changes over time in the pattern of vegetation growth across gradients of differing grazing intensity.


2. Grazing intensity was measured indirectly using distance from water. Vegetation growth was derived from remotely sensed vegetation index values before and after large rainfalls, The amount of growth was adjusted for initial vegetation cover to give a standard measure of vegetation response.


3. A vegetation response ratio was derived by comparing areas less than 4 km from water with benchmark areas further away. Systematic changes in this ratio over time indicate a trend.


4. Ratio values from test areas suggested decline, improvement and no change, consistent with recent management history.


5. The method can be applied where the whole area is affected by grazing and relatively pristine benchmarks are unavailable. It could therefore be useful in the semi-arid rangelands where paddocks are smaller than in the arid part of Australia. It also has possible uses in the rangelands of Africa and the Americas. There is potential for applying the method to traditional grazing systems as well as to commercial pastoralism.


6. The method is cheaper and more effective than other techniques and increases the capacity of grazing gradient-based monitoring schemes for arid and semi-arid areas.


英文关键词environmental trend grazing gradients monitoring non-equilibrium rangelands remote sensing
类型Article
语种英语
国家Australia
收录类别SCI-E
WOS记录号WOS:000076100200002
WOS关键词CENTRAL AUSTRALIA ; VEGETATION COVER ; ARID RANGELANDS ; PATTERNS ; RAINFALL ; MODELS ; CATTLE ; IMAGES ; TIME
WOS类目Biodiversity Conservation ; Ecology
WOS研究方向Biodiversity & Conservation ; Environmental Sciences & Ecology
来源机构Commonwealth Scientific and Industrial Research Organisation
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/135990
作者单位(1)CSIRO Land & Water, Canberra, ACT 2601, Australia;(2)CSIRO, Div Wildlife & Ecol, Ctr Arid Zone Res, Alice Springs, NT 0871, Australia
推荐引用方式
GB/T 7714
Pickup, G,Bastin, GN,Chewings, VH. Identifying trends in land degradation in non-equilibrium rangelands[J]. Commonwealth Scientific and Industrial Research Organisation,1998,35(3):365-377.
APA Pickup, G,Bastin, GN,&Chewings, VH.(1998).Identifying trends in land degradation in non-equilibrium rangelands.JOURNAL OF APPLIED ECOLOGY,35(3),365-377.
MLA Pickup, G,et al."Identifying trends in land degradation in non-equilibrium rangelands".JOURNAL OF APPLIED ECOLOGY 35.3(1998):365-377.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Pickup, G]的文章
[Bastin, GN]的文章
[Chewings, VH]的文章
百度学术
百度学术中相似的文章
[Pickup, G]的文章
[Bastin, GN]的文章
[Chewings, VH]的文章
必应学术
必应学术中相似的文章
[Pickup, G]的文章
[Bastin, GN]的文章
[Chewings, VH]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。