Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.3161/15052249PJE2015.63.2.001 |
Vegetation landscape analysis due to land use changes on arid lands | |
Manjarrez-Dominguez, Carlos1; Pinedo-Alvarez, Alfredo2; Pinedo-Alvarez, Carmelo2; Villarreal-Guerrero, Federico2; Cortes-Palacios, Leonor2 | |
通讯作者 | Pinedo-Alvarez, Alfredo |
来源期刊 | POLISH JOURNAL OF ECOLOGY
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ISSN | 1505-2249 |
出版年 | 2015 |
卷号 | 63期号:2页码:167-174 |
英文摘要 | Fast land use changes have strongly affected arid and semi-arid regions at a global scale, affecting food security of the inhabitants of these regions. This study evaluated the fragmentation degree in the Chihuahua’s desert region of Mexico by using data from the Landsat TM sensor. Nine scenes, taken with Landsat TM5 sensor from the years 1990, 2000, and 2012, were used for the analysis. The coverage of seven land uses (grasslands, shrubland, croplands, sandy desert vegetation, forest, water bodies, and urban areas) was obtained under supervised classification techniques and the accuracy level was evaluated through the Kappa multi-varied discrete index. The classification showed a good reliance level having global accuracies of 93, 93.2 and 90.3% for the years 1990, 2000 and 2012, respectively. The fragmentation analysis showed an increase in the number of patches, an indicator of the ecosystem degradation process. The patches number increased from 8,354.23 in 1990 to 9,658.36 in 2000 and to 11,469 in 2012. Simpson and Shannon diversity indexes proved a clear fragmentation process. During the period of 1990-2012, grasslands were the most affected vegetation type with a reduction of 30.7% in its area. Such reduction was mainly attributed to invasions of shrubland communities and to an increase in cropland areas. |
英文关键词 | multispectral classification grasslands diversity index landscape metrics fragmentation |
类型 | Article |
语种 | 英语 |
国家 | Mexico |
收录类别 | SCI-E |
WOS记录号 | WOS:000357442400001 |
WOS关键词 | GRASSLAND FRAGMENTATION ; SOUTH-AMERICA ; MANAGEMENT ; DIVERSITY ; DYNAMICS ; INCREASE ; PLATEAU ; CHINA |
WOS类目 | Ecology |
WOS研究方向 | Environmental Sciences & Ecology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/189890 |
作者单位 | 1.Univ Autonoma Chihuahua, Fac Zootecn & Ecol, Chihuahua 31310, Chih, Mexico; 2.Univ Autonoma Chihuahua, Fac Zootecn & Ecol, Chihuahua 31453, Chih, Mexico |
推荐引用方式 GB/T 7714 | Manjarrez-Dominguez, Carlos,Pinedo-Alvarez, Alfredo,Pinedo-Alvarez, Carmelo,et al. Vegetation landscape analysis due to land use changes on arid lands[J],2015,63(2):167-174. |
APA | Manjarrez-Dominguez, Carlos,Pinedo-Alvarez, Alfredo,Pinedo-Alvarez, Carmelo,Villarreal-Guerrero, Federico,&Cortes-Palacios, Leonor.(2015).Vegetation landscape analysis due to land use changes on arid lands.POLISH JOURNAL OF ECOLOGY,63(2),167-174. |
MLA | Manjarrez-Dominguez, Carlos,et al."Vegetation landscape analysis due to land use changes on arid lands".POLISH JOURNAL OF ECOLOGY 63.2(2015):167-174. |
条目包含的文件 | ||||||
文件名称/大小 | 资源类型 | 版本类型 | 开放类型 | 使用许可 | ||
Vegetation landscape(752KB) | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 |
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