Dynamic of land use/cover change processes in a Brazilian semiarid watershed

Revista Brasileira de Engenharia Agrícola e Ambiental

Coelho, Victor H. R.¹  Moura, Glawbber S. S. de¹  Ribeiro Neto, Alfredo¹  Montenegro, Suzana M. G. L.³  Lima, Eduardo R. V. de²  Almeida, Cristiano das N.² 

[1] UFPE, Recife;UFPB, João Pessoa;UFPE, Recife, PE

关键词: remote sensing;    landscape metrics;    semiarid region    IntroduçãoAs ações antrópicas têm gerado grandes impactos nas paisagens através do intenso processo de substituição das áreas naturais por diversos tipos de uso do solo e da fragmentação das áreas com cobertura florestal (Matsushita et al;   

DOI  :  10.1590/S1415-43662014000100009

学科分类：农业科学（综合）

来源: Universidade Federal de Campina Grande * Centro de Ciencias e Tecnologia

【 摘 要 】

The changes in the use and occupation of land, caused by human actions, have created major impacts on the landscapes. These impacts can be mitigated by monitoring the use and land cover, using spatial and temporal information of the changes occurring in the landscape. This paper presents a detailed analysis of spatial and temporal dynamics of land use and occupation of the stream São Paulo watershed, located in the semiarid region of Pernambuco State, during the period from 1991 to 2010. Based on the classification of three satellite images for the years 1991, 2000 and 2010, transition matrices were used associated with the algebra of maps, and landscape metrics. The results showed that during the studied period, the classes of land use and occupation went through a major transition, with the gradual replacement of sparse area of 'caatinga' vegetation by grazing areas/agriculture. Along with the rapid growth of the grazing areas/agriculture class, the predominant landscape of native vegetation has been replaced by a landscape increasingly devastated, fragmented and heterogeneous, as shown by the index of landscape metrics.

【 授权许可】

CC BY-NC