南米西部で確認された侵食率に対する植物の緯度効果
J Starke1, T A Ehlers2, M Schaller1
1Department of Geosciences, University of Tuebingen, 72074, Germany.
まとめ
植物
科学分野:
- 地球 表面 の プロセス
- 生物地球科学
- 地形学
背景:
- 植生は山の斜面を安定させ 天候を加速し 生物圏と地球の表面を結びつけます
- 植生と降雨の複雑な相互作用と 侵食の表面過程を理解することは依然として困難です
研究 の 目的:
- 広範囲の気候グラデントにおける侵食率に対する植物の双方向的な影響を調査する.
- 浸食ダイナミクスを調節する降水と植物の競合する役割を明確にします.
主な方法:
- 86個の宇宙放射性核素サンプルから得られた千年スケールの侵食率を分析した.
- アンデス山脈西部の3500kmのグラデントで多変数統計を用いた.
主要な成果:
- 植物の覆いと侵食の双方向関係が確認された.
- 乾燥し,植生が少ない地域では負の相関が観察され,湿気があり,植生が多い地域では正の相関が観察された.
結論:
- 植物の浸食への影響は状況に依存し,降水量によって異なります.
- 植生と降雨の相互作用が観察された侵食パターンを誘発する.
さらに関連する動画
08:09Measuring and Mapping Patterns of Soil Erosion and Deposition Related to Soil Carbonate Concentrations Under Agricultural Management
Published on: September 12, 2017
12.2K
09:44Use of Principal Components for Scaling Up Topographic Models to Map Soil Redistribution and Soil Organic Carbon
Published on: October 16, 2018
10.6K
関連する概念動画
Adaptations that Reduce Water Loss
27.7K
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
27.7K
What is Climate?
20.3K
Climate refers to the prevailing weather conditions in a specific area over an extended period. As the saying goes, “Climate is what you expect. Weather is what you get.” Climate is influenced by geographic factors, such as latitude, terrain, and proximity to bodies of water.
20.3K
Influence of Earth's Curvature and Atmospheric Refraction on Leveling
734
During leveling, the Earth's curvature and atmospheric refraction introduce deviations in the line of sight from a true horizontal reference. When the line of sight is leveled, it remains perpendicular to the plumb line only at a single point. Beyond this, it deviates due to the Earth’s curvature, represented by the correction C. For a sight distance D, the deviation can be derived using the relationship:This relationship shows that the deviation increases quadratically with distance. Over a...
734
