Your browser doesn't support javascript.
loading
Spatial and temporal variations of land use and vegetation cover in Southwest China from 2000 to 2015.
Ma, Hai-Yun; Zhang, Lin-Lin; Wei, Xue-Qiong; Shi, Ting-Ting; Chen, Tie-Xi.
Afiliación
  • Ma HY; School of Geographical Sciences, Nanjing University of Information Science & Technology, Nanjing 210044, China.
  • Zhang LL; School of Geographical Sciences, Nanjing University of Information Science & Technology, Nanjing 210044, China.
  • Wei XQ; School of Geographical Sciences, Nanjing University of Information Science & Technology, Nanjing 210044, China.
  • Shi TT; School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, China.
  • Chen TX; School of Geographical Sciences, Nanjing University of Information Science & Technology, Nanjing 210044, China.
Ying Yong Sheng Tai Xue Bao ; 32(2): 618-628, 2021 Feb.
Article en En | MEDLINE | ID: mdl-33650372
Southwestern China is an important ecologically resource area and ecologically fragile area in China, which plays an important role in the national project of "Clear Waters and Green Mountains". Based on land use data set with a 1 km spatial resolution and combined with land use transfer matrix, we analyzed the characteristics and driving forces of land use change in Southwest China from 2000 to 2015. Based on the MODIS remote sensing index, we calculated the vegetation coverage in Southwest China using the dimidiate pixel model, and analyzed the changes of the normalized vegetation index (NDVI) and vegetation coverage. Results showed that the main land types were woodland, cropland and grassland. The built-up land area increased by 5874 km2(55.8%), the cropland area decreased by 6211 km2, and grassland decreased by 2099 km2. From 2000 to 2015, the area that had been changed to built-up land was the largest, mainly from cropland (contributed 68.2%), woodland (contributed 19.2%) and grassland (contributed 13.1%). The transformed areas were mostly close to urban area. The area and rate for the transformation of cropland were 7079 km2 and 2.2% respectively, accounting for 46.0% of all the transferred out areas. Most of the woodland were transformed from grassland (61.8%), mainly distributed in central and southern Guizhou and western Yunnan. Both NDVI and vegetation coverage were significantly increased, indicating that the whole region was greening. NDVI of both natural vegetation and cropland increased significantly, while the NDVI of areas with expanded build-up land decreased. Therefore, natural vegetation and cropland dominated the vegetation change in this region. Results of the resi-dual analysis showed that both climate change and human activities contributed significantly to the greening trend.
Asunto(s)
Palabras clave
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Cambio Climático / Monitoreo del Ambiente Tipo de estudio: Prognostic_studies Límite: Humans País/Región como asunto: Asia Idioma: En Revista: Ying Yong Sheng Tai Xue Bao Asunto de la revista: SAUDE AMBIENTAL Año: 2021 Tipo del documento: Article País de afiliación: China Pais de publicación: China
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Cambio Climático / Monitoreo del Ambiente Tipo de estudio: Prognostic_studies Límite: Humans País/Región como asunto: Asia Idioma: En Revista: Ying Yong Sheng Tai Xue Bao Asunto de la revista: SAUDE AMBIENTAL Año: 2021 Tipo del documento: Article País de afiliación: China Pais de publicación: China