中南半岛野火变化特征及其与土壤水分的相互作用
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X87;S127;S152.7

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国家可持续发展创新议程示范区专项“临沧市大气污染源监测解析研究及大气污染预报预警系统开发”(202104AC100001-A14);中国气象局创新发展专项“云南高原特色农业监测评估技术及业务化应用”(CXFZ2021J069)


Variation of Wildfires and Its Interaction with Soil Moisture on Indo-China Peninsula
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    摘要:

    [目的] 分析野火变化特征并探讨火点数与不同深度土壤水分的关联性,为评价生态文明建设和人类生产生活提供科学依据。[方法] 基于SNPP/ⅦRS卫星火点监测、火烧迹地和SMAP土壤水分等数据,使用统计方法多角度对2016-2021年中南半岛野火变化特征进行分析,探讨不同干湿条件下火点数与0-5 cm和0-100 cm 2个不同深度土壤水分的相互作用。[结果] ①中南半岛火点数和火烧迹地年内主要出现在2-4月,二者在时空分布上具有较高的一致性,多集中在缅甸西部与印度接壤区域、缅甸中部以东和老挝北部。②2-4月火点主要出现在林地、灌木地和耕地,而易发生在归一化植被指数(NDVI)为如下3个等级的区域:0.2

    Abstract:

    [Objective] The variation characteristics of wildfires and determine the correlation between the number of wildfires and soil moisture at different depths were analyzed in order to provide a scientific basis for evaluating the construction of ecological civilization and human production and life.[Methods] We used SNPP/ⅦRS satellite fire monitoring, fire site, and SMAP soil moisture data with statistical methods to analyze the change characteristics of wildfires on the Indo-China Peninsula from 2016 to 2021, and to explore the correlation between number of wildfires and soil moisture at 0-5 cm and 0-100 cm under different dry and wet conditions.[Results] ① Wildfires and burned areas on the Indo-China Peninsula mainly occurred from February to April in a year. The number of wildfires and burned areas had a high consistency in spatial and temporal distribution, mostly being concentrated in the border area between Western Myanmar and India, the area east of Central Myanmar, and Northern Laos. ② From February to April, fires mainly occurred in forest land, shrub land, and cultivated land, and were prone to occur in regions where the normalized difference vegetation indices (NDVI) were as below:0.2

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赵平伟,吉文娟,张茂松,尤文龙,龚丽军.中南半岛野火变化特征及其与土壤水分的相互作用[J].水土保持通报,2024,44(1):76-85

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  • 收稿日期:2023-06-28
  • 最后修改日期:2023-08-12
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  • 在线发布日期: 2024-04-26
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