摘要
LAI是表征植被动态演变的重要参数。本文耦合Theil-Sen趋势法、Mann-Kendall显著性检验法和Hurst指数阐明了贵州武陵山区LAI时空演变趋势及未来持续性特征。结果表明:(1)2000-2020年间,贵州武陵山区LAI总体上呈现出波动上升趋势,平均增速0.044 m^(2)/m^(2),平均值为3.02 m^(2)/m^(2)。(2)LAI显著增加区域主要集中在务川、沿河以及凤冈县,而显著减少区域主要在余庆和碧江区。(3)LAI持续减少的区域仅2.06%,持续增加的区域达到23.7%,而未来变化无法确定的区域达到了74.23%。本文可为区域生态环境保护与恢复成效评估提供理论支撑。
LAI is an important parameter that characterizes the dynamic evolution of vegetation.This study has coupled the Theil-Sen trend method,Mann-Kendall significance test method,and Hurst index to reveal the spatiotemporal evolution trend and future sustainability characteristics of vegetation LAI in the Wuling mountains of Guizhou.The results show that:(1)The LAI in the Wuling mountains of Guizhou showed an overall fluctuating upward trend from 2000 to 2020,with average growth rate of 0.044 m^(2)/m^(2)and an average value of 3.02 m^(2)/m^(2).(2)The regions with significant increase in LAI were mainly Wuchuan,Yanhe,and Fenggang,while the regions with significant decrease were mainly Yuqing and Bijiang.(3)The area where LAI showed a sustained decrease was only 2.06%,while the area where LAI showed a sustained increase was 23.7%,and the area where future changes could not be determined was 74.23%.This study can provide theoretical support for evaluating the effectiveness of regional ecological environment protection and restoration.
作者
吴路华
杨东妮
陈丹
Wu Luhua;Yang Dongni;Chen Dan(School of Economics and Management,Tongren University,Tongren,China;Rural Revitalization Research Center of Tongren University,Tongren,China)
出处
《科学技术创新》
2023年第22期31-36,共6页
Scientific and Technological Innovation
基金
铜仁市科技计划项目(铜市科研[2022]63号)
铜仁学院博士科研启动基金项目(trxyDH2103)
贵州省教育厅高等学校科学研究项目(青年项目)(黔教技〔2022〕351号)。
作者简介
通讯作者:吴路华(1992-),男,博士研究生,讲师,主要从事喀斯特生态环境与全球变化研究。
