干旱区生态环境知识资源中心(Arid): Influence of oil activity and sheep ranching on plant cover in the arid and semiarid region of Patagonia, Argentina

Arid

DOI	10.18172/cig.3632
	Influence of oil activity and sheep ranching on plant cover in the arid and semiarid region of Patagonia, Argentina
	Buzzi, M. A.; Rueter, B. L.; Ghermandi, L.; Maldonado, F.
通讯作者	Buzzi, MA
来源期刊	CUADERNOS DE INVESTIGACION GEOGRAFICA
ISSN	0211-6820
EISSN	1697-9540
出版年	2019
卷号	45 期号:2 页码:661-685
英文摘要	The Geography has provided the greatest theoretical body for the study of the configurations that occur over the geographical space. The generation of cartography that represents ground cover is one of the most important uses of remote sensing. Polygons were selected, with oil and livestock activity, in the landscape units: coastal canyons, plateaus and western valleys. The polygons were used to evaluate multi-temporal changes in land cover and plant communities over a period of 15 years. Supervised classifications and analysis of landscape metrics were made to examine the possible causes of these changes by comparing: i) polygons without oil or livestock activity (control), ii) polygons with oil and livestock activity, iii) polygons with oil activity and without livestock activity, and iv) polygons without oil activity and livestock activity. The results obtained indicated that the density of patches, the total edge, the edge density and the division index of the fragments increased in the three landscape units, between 2001 and 2016. The contagion index, however, decreased. An increase in bare soil was observed in the plateaus and in the western valleys, with a regression of the dominant plant communities. The density of patches in the sites without disturbance was the lowest, and in the sites with both disturbances acting simultaneously was maximum. In the sites without disturbance the effective mesh size was maximum, while in the sites with some disturbance it was smaller. When analyzing the effect of the disturbance on the elements of the landscape it was observed that the presence of the disturbance generates the highest density of patches and the minimum connectivity. The results show that there was a process of fragmentation in the coverage of the soil directed by the oil exploitation and sheep farming, which decrease the size of the patches and, therefore, the density of the same per unit area.
英文关键词	arid zones fragmentation landscape metrics oil exploitation sheep farming
类型	Article
语种	西班牙语
开放获取类型	DOAJ Gold
收录类别	ESCI
WOS记录号	WOS:000484412100011
WOS关键词	ECOSYSTEM STRUCTURE ; LANDSCAPE METRICS ; DESERTIFICATION ; FRAGMENTATION ; INDICATORS ; PATTERNS ; SCALE ; CLASSIFICATION ; HETEROGENEITY ; BIODIVERSITY
WOS类目	Geography, Physical
WOS研究方向	Physical Geography
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/333789
作者单位	[Buzzi, M. A.; Rueter, B. L.] Univ Nacl Patagonia San Juan Bosco, Dept Biol & Ambiente, Fac Ciencias Nat & Ciencias Salud, Ciudad Univ Km 4, RA-9000 Comodoro Rivadavia, Chubut, Argentina; [Ghermandi, L.] Univ Nacl Comahue, Lab Ecotono, INIBIOMA, CONICET, San Carlos De Bariloche, Rio Negro, Argentina; [Maldonado, F.] Univ Nacl Patagonia San Juan Bosco, Dept Quim, Fac Ciencias Nat & Ciencias Salud, Comodoro Rivadavia, Chubut, Argentina
推荐引用方式 GB/T 7714	Buzzi, M. A.,Rueter, B. L.,Ghermandi, L.,et al. Influence of oil activity and sheep ranching on plant cover in the arid and semiarid region of Patagonia, Argentina[J],2019,45(2):661-685.
APA	Buzzi, M. A.,Rueter, B. L.,Ghermandi, L.,&Maldonado, F..(2019).Influence of oil activity and sheep ranching on plant cover in the arid and semiarid region of Patagonia, Argentina.CUADERNOS DE INVESTIGACION GEOGRAFICA,45(2),661-685.
MLA	Buzzi, M. A.,et al."Influence of oil activity and sheep ranching on plant cover in the arid and semiarid region of Patagonia, Argentina".CUADERNOS DE INVESTIGACION GEOGRAFICA 45.2(2019):661-685.