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景观阻力指数旨在实现功能性森林连接

Ivan Vanderley-Silva¹, Roberta Averna Valente²

¹Program in Planning and Use of Renewable Resources (PPGPUR), Federal University of São Carlos (UFSCAR-Sorocaba), João Leme dos Santos Highway (SP-264), km 110, Sorocaba, SP, Brazil. ivanvanderley@yahoo.com.br.

Environmental monitoring and assessment

|September 19, 2023

概括

这项研究使用遥感数据开发了一个景观阻力指数,以了解圣保罗大西洋森林中的森林连接. 该指数有效地绘制出抵抗移动的区域,强调城市扩张的影响.

科学领域:

生态生态学生态生态学
保护生物学保护生物学
遥感遥感遥感遥感

背景情况:

了解景观阻力对于物种的迁移和息地适合性至关重要,特别是随着城市扩张的增加.
城市扩张对森林功能连接的影响仍然不太清楚.
现有的电阻模型往往缺乏对复杂景观的全面参数化.

研究的目的:

使用结构方程建模 (SEM) 开发景观阻力指数,以评估森林的功能连接性.
将遥感衍生变量 (热量排放,生物质,人为障碍物) 纳入阻力指数中.
评估指数在生物多样性地区的表现,比如圣保罗绿带生物圈保护区的大西洋森林.

主要方法:

采用结构方程建模 (SEM) 来构建景观阻力指数.
利用遥感数据来推导观察到的变量:热量排放,生物质和人为障碍物.
将指数应用于圣保罗的绿带生物圈保护区,以建模森林的功能连接.

主要成果:

SEM显示出了显著的调整,实现了1.00的比较适合指数 (CFI) 和0.00的根平均平方误差 (RMSEA).
开发的景观阻力指数有效地反映了土地使用/土地覆盖阻力水平.
最高的阻力值与人类化用途和孤立的森林区域有关,这表明存在移动障碍.

结论:

基于环境属性的景观阻力指数准确地反映了森林的功能连接性.
该指数为在受人类活动影响的景观中设计有效的森林走廊提供了有价值的框架.
这种方法提供了一种量化和可视化景观阻力的方法,有助于保护规划.

关键词:

环境标准环境标准土地使用和土地覆盖.景观结构分析景观结构分析结构方程模型的结构方程模型.

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