相关实验视频

Updated: May 13, 2025

Use of Principal Components for Scaling Up Topographic Models to Map Soil Redistribution and Soil Organic Carbon

Use of Principal Components for Scaling Up Topographic Models to Map Soil Redistribution and Soil Organic Carbon

Published on: October 16, 2018

挪威森林中土壤有机碳储量的空间预测建模

Andreas Hagenbo¹, Lise Dalsgaard¹, Marius Hauglin¹

¹Department of Forest and Climate, Norwegian Institute of Bioeconomy Research (NIBIO), Box 115, 1431 Ås, Norway.

The Science of the total environment

|April 29, 2025

概括

玻里亚森林土壤储存了大量的土壤有机碳 (SOC). 这项研究绘制了挪威森林SOC库存的地图,估计1.571.87 Pg C到100厘米,这对于了解全球碳循环至关重要.

科学领域:

土壤科学土壤科学
森林生态森林生态
环境科学环境科学

背景情况:

玻里亚森林土壤是相当大的陆地碳储存库.
土壤有机碳 (SOC) 对全球碳循环动态至关重要.

研究的目的:

为了生成挪威森林中SOC库存的高分辨率空间预测.
要量化不同土壤深度间隔的SOC库存:总深度 (0100厘米),森林地板 (LFH) 和上层矿土 (030厘米).

主要方法:

利用了来自1014个国家森林清单地块的遗留土壤数据 (1988年至1992年).
采用了包含环境预测因素 (土地覆盖,湿度,气候,遥感) 的增强回归树模型.
将预测性能与包括土壤化学变量在内的模型进行比较.

主要成果:

估计的SOC总储量为1.571.87 Pg C (0100厘米),0.550.66 Pg C (LFH),以及0.680.80 Pg C (030厘米).
实现了绘图模型预测性能R2 = 0.440.58,其中包括土壤化学在内的模型显示了更高的性能 (R2 = 0.650.71).
确定 Sentinel-2 NDVI,水表深度和斜率作为空间模型中的关键预测因素.

结论:

生成的SOC地图为识别挪威脆弱森林区域提供了基线.
地图对于评估气候变暖和土地管理相关风险至关重要.
了解SOC分布对于预测土壤二氧化碳排放和为气候政策提供信息至关重要.

关键词:

玻里埃尔森林玻里埃尔森林玻里埃尔森林玻里埃尔森林碳库存碳库存碳库存碳库存森林地板上的森林地板.森林土壤森林土壤机器学习是机器学习.矿物质土壤是一种矿物质土壤.空间预测的空间预测

更多相关视频

Methods of Soil Resampling to Monitor Changes in the Chemical Concentrations of Forest Soils

Methods of Soil Resampling to Monitor Changes in the Chemical Concentrations of Forest Soils

Published on: November 25, 2016

Utilizing Soil Density Fractionation to Separate Distinct Soil Carbon Pools

Utilizing Soil Density Fractionation to Separate Distinct Soil Carbon Pools

Published on: December 16, 2022

相关概念视频

The Carbon Cycle

The Carbon Cycle

Carbon is the basis of all organic matter on Earth, and is recycled through the ecosystem in two primary processes: one in which carbon is exchanged among living organisms, and one in which carbon is cycled over long periods of time through fossilized organic remains, weathering of rocks, and volcanic activity. Human activities, including increased agricultural practices and the burning of fossil fuels, has greatly affected the balance of the natural carbon cycle.