Abstract
Application of Remote Sensing Technology to Monitoring of Vegetation Recovery and Regional Precipitation in Wenchuan Earthquake Area: Case Study of Longxi River Basin
Highlights
On May 12, 2008, an earthquake with the highest magnitude (8.0 on the Richter scale) and causing the most severe damage since the founding of the People’s Republic of China occurred in Wenchuan County, Sichuan Province
The vegetation cover in the south is higher than that in the north, and the vegetation coverage decreased after the Wenchuan earthquake (2008) but increased in 2015
After the “5.12” Wenchuan earthquake, a large number of landslides occurred and debris accumulated at the slopes and gullies, which provided materials for the generation of debris flows
Summary
On May 12, 2008, an earthquake with the highest magnitude (8.0 on the Richter scale) and causing the most severe damage since the founding of the People’s Republic of China occurred in Wenchuan County, Sichuan Province. The epicenter of the earthquake was 103.4° E, 31.0° N, the focal depth was 12–19 km, and the intensity was 11 degrees.[1] According to data from the Forestry Department of Sichuan Province, the loss of forested area was about 3.29 × 103 km, which resulted in a direct economic loss estimated to be as high as 35 million US dollars.[2] As well as causing casualties and property losses, the Wenchuan earthquake caused a huge amount of damage to the ground surface Secondary geological disasters, such as collapses, landslides, debris flows, and barrier lakes, caused serious damage to the terrestrial and river ecosystem, adversely affecting the environmental sustainability of the regional ecology and exacerbating regional climate change.[3,4,5,6,7]. The latent heat flux and absorbed solar short-wave radiation decrease, and the decreases in precipitation and evaporation are mainly related to the changes in the surface roughness and albedo of the sandy land
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