Atmospheric Circulation Patterns Associated With Wildfires in the Monsoon Regions of China

Zhao, Fenfang; Liu, Yongqiang

doi:10.1029/2019gl081932

Cited by 18 publications

(13 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We classified the gridded monthly WFAC network into ten distinct fire regions using rotated principal component analysis (RPCA, see “Methods” and Supplemental material for details) that resemble previous spatial classifications of climate 33 and wildfire in China 24 – 27 . The WFAC fire chronologies for the whole country (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…Fire patterns in China and their linkages with climate 24 – 29 have mostly been studied based on provincial field survey data at coarse resolution (on average ~300,000 km 2 ) 26 , 29 . Such studies have revealed broad-scale fire responses to temperature, precipitation, and wind variability, as well as oceanic and atmospheric modes, such as ENSO 24 – 29 . However, the climatic influences on fire activity are not well-quantified at the local scale.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

ENSO modulates wildfire activity in China

et al. 2021

View full text Add to dashboard Cite

China is a key region for understanding fire activity and the drivers of its variability under strict fire suppression policies. Here, we present a detailed fire occurrence dataset for China, the Wildfire Atlas of China (WFAC; 2005–2018), based on continuous monitoring from multiple satellites and calibrated against field observations. We find that wildfires across China mostly occur in the winter season from January to April and those fire occurrences generally show a decreasing trend after reaching a peak in 2007. Most wildfires (84%) occur in subtropical China, with two distinct clusters in its southwestern and southeastern parts. In southeastern China, wildfires are mainly promoted by low precipitation and high diurnal temperature ranges, the combination of which dries out plant tissue and fuel. In southwestern China, wildfires are mainly promoted by warm conditions that enhance evaporation from litter and dormant plant tissues. We further find a fire occurrence dipole between southwestern and southeastern China that is modulated by the El Niño-Southern Oscillation (ENSO).

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

ENSO modulates wildfire activity in China

et al. 2021

View full text Add to dashboard Cite

show abstract

“…In addition, the specific geographical location, topography, climate, and distribution of forest resources lead to the uniqueness of forest and grassland fires in Southwest China, which are characterized by a low fire intensity but high frequency. Forest and grassland fires in Southwest China mainly occur from November to May of the next year [26,27]. Statistical research shows that the three months with the highest number of fires are February to April [22,27].…”

Section: Study Areamentioning

confidence: 99%

Smoke Injection Heights from Forest and Grassland Fires in Southwest China Observed by CALIPSO

Wang

Zhang

Zhao

et al. 2022

Forests

View full text Add to dashboard Cite

Smoke injection height (SIH) determines the distance and direction of smoke transport, thus impacting the atmospheric environment. In this study, we used Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations data coupled with Moderate Resolution Imaging Spectroradiometer (MODIS) data and the Hybrid Single-Particle Lagrangian Integrated Trajectory model to derive the SIH values during the peak forest and grassland fire seasons from 2012 to 2017 in Southwest China. The results suggest that the SIH values ranged from 2500 m to 2890 m. An analysis of the dependence of SIH on fire characteristics revealed no obvious correlation between SIH and fire radiative power (FRP) because other factors in addition to FRP have an important impact on SIH. Moreover, MODIS FRP data has a drawback in representing the energy released by real fires, also leading to this result. The topographic variables of forest and grassland fires in Southwest China are very different. Complex topography affects SIH by affecting fire intensity and interactions with wind. A comparison of the SIHs with boundary layer height reveals that 75% of the SIHs are above the boundary layer. Compared with other areas, a higher percentage of free troposphere injection occurs in Southwest China, indicating that smoke can cause air pollution over large ranges. Our work provides a better understanding of the transport and vertical distribution of smoke in Southwest China.

show abstract

“…South China is located in the subtropical monsoon climate zone, where there are low mountains and hills [1,2]. South China experiences the most plentiful rainfall in China, influenced by subtropical monsoons.…”

Section: Introductionmentioning

confidence: 99%

Soil Remediation of Subtropical Garden Grasses and Shrubs Using High-Performance Ester Materials

Gou

Tang

et al. 2022

Sustainability

View full text Add to dashboard Cite

Soil erosion due to rainstorms is a serious problem in subtropical gardens in South China. Soil conservation and the restoration of degraded landscapes are important research topics at home and abroad. Because of the sluggish growth of plants under traditional cultivation techniques, they are incapable of effectively protecting the soil. Therefore, the rapid and high-quality soil conservation of subtropical landscapes remains an urgent problem to be overcome. The purpose of this study is to improve the red soil and ground environment for the growth of grasses and shrubs through high-performance ester materials. Our objective was to find a solution for the high impact of soil loss on subtropical landscapes. In this study, we used the ecological restoration of soil as the starting point and selected a typical subtropical garden in South China as the field test point. We carried out soil erosion resistance testing using high-performance ester materials. The anti-erosion abilities of slopes under various working conditions are discussed. During the growth period, the soil indexes were monitored for a long time, and the growth of grasses and shrubs was compared. The obtained monitoring data were analyzed with mathematical statistics. We found that the addition of high-performance ester materials significantly reduced soil loss by 52.60%. High-performance ester materials have a good hydrothermal regulation function, which can promote the germination and later growth of sloping plants. The decrease in ground internal density promotes the extension of plant roots. High-performance ester materials can improve soil permeability and activity and promote vegetation growth. In terms of turf thickness and overall growth as well as shrubs crown width and height, high-performance ester materials have a beneficial effect on promoting plant growth. Soil remediation using high-performance ester materials has good economic value, high water-holding capacity, adaptability, and convenience. In this study, we determined a solution for the high impact of soil loss on subtropical landscapes. The soil remediation of a subtropical garden using high-performance ester materials was successful. The practice of landscape soil remediation engineering presented in this paper can provide a reference for typical landscape soil remediation in subtropical zones.

show abstract

Atmospheric Circulation Patterns Associated With Wildfires in the Monsoon Regions of China

Cited by 18 publications

References 52 publications

ENSO modulates wildfire activity in China

ENSO modulates wildfire activity in China

Smoke Injection Heights from Forest and Grassland Fires in Southwest China Observed by CALIPSO

Soil Remediation of Subtropical Garden Grasses and Shrubs Using High-Performance Ester Materials

Contact Info

Product

Resources

About