摘要
以中国南部生态大区为研究区域,在多个空间尺度上探究森林火灾和森林损失的时空分布格局,并揭示森林损失与火烧的时空关联性特征及尺度效应。结果表明:2003—2015年,中国南部生态大区共损失森林资源69314.8 km^(2),年均损失5331.9 km^(2)的森林。森林火烧面积为8104.9 km^(2),年均森林火烧面积为623.5 km^(2)。4个生态地区森林损失面积和火烧面积均存在较大差异性。4个生态地区森林资源损失均呈现增加趋势。除川渝生态地区外,长江中下游、云贵高原和华南生态地区森林火烧面积呈减少趋势。在空间上,只有1.9%的区域森林损失和火烧面积呈显著正相关,说明中国南部生态大区森林损失与火烧有一定的关联,但关联性不强。在不同的植被类型和地貌条件下,森林损失和火烧面积的关联性存在显著差异性。
The spatial and temporal distribution patterns of forest fire and forest loss were studied on multiple spatial scales in the ecological region of southern China, the correlation and scaling effect between forest loss and forest fire were revealed. The results showed that during 2003 to 2015, a total of 69 314.8 km^(2) of forests were lost,with an average annual loss of 5 331.9 km^(2). The forest burned area was 8 104.9 km^(2), with an average annual forest burned area of 623.5 km^(2);the area of forest loss and forest fire in the 4 sub-ecological regions were significantly different. The loss of forests showed an increasing trend in all the 4 ecological regions. Except for Sichuan and Chongqing ecological regions, the forest burned areas in the middle and lower reaches of the Yangtze River, Yunnan-Guizhou Plateau and South China ecological regions showed a decreasing trend;spatially, only 1.9% of the study area presented significantly positive correlation between forest loss and forest fire, which indicates that there is a certain correlation between forest loss and burned area, but the correlation is not strong;the correlation between forest loss and forest fire was significantly different under vegetation types and geomorphic conditions.
作者
杜林翰
吴志伟
巫清芸
郭灵灵
东晓珺
林世滔
Du Linhan;Wu Zhiwei;Wu Qingyun;Guo Lingling;Dong Xiaojun;Lin Shitao(Key Laboratory of Ministry of Education on Poyang Lake Wetland and Watershed Research,Jiangxi Normal University,Nanchang Jiangxi 330022,China;School of Geography and Environment,Jiangxi Normal University,Nanchang Jiangxi 330022,China;College of Forestry,Jiangxi Environmental Engineering Vocational College,Ganzhou Jiangxi 341000,China)
出处
《西南林业大学学报（自然科学）》
CAS
北大核心
2022年第3期138-147,共10页
Journal of Southwest Forestry University：Natural Sciences
基金
国家重点研发计划项目(2018YFE0207800)资助。
