Decreased post-seismic landslides linked to vegetation recovery after the 2008 Wenchuan earthquake

Yang, Wentao; Qi, Wenwen; Zhou, Jinxing

doi:10.1016/j.ecolind.2017.12.006

Cited by 82 publications

(64 citation statements)

References 37 publications

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“…Coseismic landslides destroy vegetation by its removal, followed by denudation along landslide back scarps, and burial in deposition zones (Cui, Lin, & Chen, ; Geertsema, Highland, & Vauegois, ; Geertsema & Pojar, ; Marston, ; Restrepo et al, ; Walker & Shiels, ). Vegetation recovery at coseismic landslide sites is important for both stabilizing the land surface and indicating post‐seismic land stability on mountain slopes (Holden, ; Shen, Zhang, Chen, & Gao, ; Yang, Qi, & Zhou, ).…”

Section: Introductionmentioning

confidence: 99%

“…Other investigations have found that the recovery of vegetation at the sites of coseismic landslides indicates a reduction in postseismic landslide activity or at least a transient land stability (C.-Y. Lin et al, 2004;Yang et al, 2018). A watershed-scale study revealed that vegetation had been gradually covering landslide surfaces following the Wenchuan earthquake (Li et al, 2015).…”

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confidence: 99%

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Effects of precipitation and topography on vegetation recovery at landslide sites after the 2008 Wenchuan earthquake

Yang

Zhou

2018

Land Degrad Dev

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An important form of land degradation is that induced by landslides. Vegetation recovery at coseismic landslide sites not only plays an important role in reducing soil erosion and increasing land stability but also records the transformation of loose, exposed landslide surfaces into stable hillslopes during the post‐seismic years. However, little is known about the vegetation recovery process or its influencing factors. In this study, we use the Moderate Resolution Imaging Spectroradiometer (MODIS) normalized difference vegetation index (NDVI) dataset, Tropical Rainfall Measuring Mission (TRMM) 3B42 daily precipitation data, and a digital elevation model (DEM) to study the impacts of precipitation and topographic parameters on vegetation recovery after the 2008 Wenchuan earthquake. Our results reveal significant NDVI decreases during the 2008 earthquake and strong recovery in the following years at the coseismic landslide sites. We also found significant negative correlations between precipitation and derivative of the NDVI trend (NDVIDT) in 2010 and 2011 and significant positive correlations in 2009 and 2013 at the regional scale. These significant negative correlations indicate that precipitation may trigger landslides to remobilize, depressing the recovery of vegetation at coseismic landslide sites during the first few years following a major earthquake. The results further show that site‐specific vegetation recovery is determined by topographic parameters at the local scale. In general, vegetation recovery is weaker at low elevations (<1,300 m) and high elevations (>3,300 m), and it is also weaker on gentler slopes (<35°) than on steeper slopes (>35°).

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

Effects of precipitation and topography on vegetation recovery at landslide sites after the 2008 Wenchuan earthquake

Yang

Zhou

2018

Land Degrad Dev

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“…The recorded damage to the forest areas is 32.867 × 10 4 ha with the forest cover decreasing from 30.7% to 30.2% according to the thematic evaluation report on forest loss during the Wenchuan earthquake, proposed by the forestry department of the Sichuan Province, China. Considering this background, many studies have been conducted to investigate or identify vegetation recovery after the earthquake (Jiang et al, ; Wang et al, ; Yang et al, ; X. Zhang et al, ). Comparatively, thermal anomalies detected from LST time series are rarely discussed in current studies.…”

Section: Introductionmentioning

confidence: 99%

Spatiotemporal Variability in Land Surface Temperature Over the Mountainous Region Affected by the 2008 Wenchuan Earthquake From 2000 to 2017

Zhao

Yin

et al. 2019

JGR Atmospheres

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The mountainous region affected by the 2008 Wenchuan earthquake was frequently analyzed to assess its vegetation recovery. However, the dynamic of surface thermal environment was rarely investigated but directly influenced local geophysical and biophysical processes. Under this background, this research aimed to analyze the trend of surface temperature based on Moderate Resolution Imaging Spectroradiometer daily land surface temperature product from 2000 to 2017 and understand its change mechanism. An annual temperature cycle model was applied to obtain the daytime and nighttime annual cycle parameters (ACPs), including mean annual surface temperature (MAST), yearly amplitude of surface temperature, and phase shift. The trend analysis with the Mann‐Kendall test illustrated the strong inverse relationship between the two ACPs (MAST and yearly amplitude of surface temperature) and elevation, and the nighttime terms showed a stronger connection than those of the daytime. The areas with significant decreases in vegetation coverage induced by the earthquake exhibited an obvious upward trend in daytime MAST and annual maximum temperature, while the vegetation improved areas presented a cooling effect. Comparatively, the nighttime ACPs was little sensitive to vegetation change and the change magnitude was relatively small. For the high mountain area, with the shrinkage of snow cover duration, the global warming effect resulted in a warming trend by increasing the annual minimum temperature at both the daytime and nighttime. Overall, this study provided insights to the impact of the earthquake to mountain thermal environment and its different responses to changes in vegetation cover and climatic environment.

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“…For instance, Zhao et al (2009) evaluated soil loss after the Wenchuan earthquake and converted the losses into monetary values based on environmental economics principles. Zhao et al (2014) and Yang et al (2018) assessed the restoration of vegetation in the areas affected by the Wenchuan earthquake by comparing remote-sensing data with GVG (GPS; video and geographic information system, GIS) agricultural sampling data. Secondly, research concentrated on the evaluation of the disaster area macroeconomic losses.…”

Section: Introductionmentioning

confidence: 99%

Indirect seismic economic loss assessment and recovery evaluation using nighttime light images – application for Wenchuan earthquake

Wang

Zhang

Gong

et al. 2018

Nat. Hazards Earth Syst. Sci.

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Indirect seismic economic loss not only impacts regional economic recovery policies but is also related to economic assistance at the national level. Due to crossregional economic activities and the difficulty of obtaining data, it is difficult for the indirect economic loss survey to cover all economic activities. However, nighttime light in an area can reflect the economic activity of the region. This article focuses on the indirect economic losses caused by the 2008 Wenchuan earthquake and evaluation of the progress of restoration and reconstruction based on nighttime light images. First, the functional relationship between GDP and nighttime light parameters is established based on pre-earthquake data. Next, the indirect loss of the earthquake is evaluated by the nighttime light attenuation in the disaster area after the earthquake. Then, the capacity recovery, which is characterized by the brightness recovery process of the light area, is evaluated. Lastly, the process of light expansion in the disaster area is analyzed to evaluate the speed and efficiency of economic expansion.Published by Copernicus Publications on behalf of the European Geosciences Union.

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Decreased post-seismic landslides linked to vegetation recovery after the 2008 Wenchuan earthquake

Cited by 82 publications

References 37 publications

Effects of precipitation and topography on vegetation recovery at landslide sites after the 2008 Wenchuan earthquake

Effects of precipitation and topography on vegetation recovery at landslide sites after the 2008 Wenchuan earthquake

Spatiotemporal Variability in Land Surface Temperature Over the Mountainous Region Affected by the 2008 Wenchuan Earthquake From 2000 to 2017

Indirect seismic economic loss assessment and recovery evaluation using nighttime light images – application for Wenchuan earthquake

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