Estimating soil erosion using the USPED model and consecutive remotely sensed land cover observations

Summer Computer Simulation Conference : (SCSC 2014) : 2014 Summer Simulation Multi-Conference : Monterey, California, USA, 6-10 July 2014. Summer Computer Simulation Conference (2014 : Monterey, Calif.) Pub Date : 2007-07-16 DOI:10.1145/1357910.1358122

Jinxun Liu, Shuguang Liu, L. Tieszen, Mingshi Chen

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引用次数: 21

Abstract

Intensified soil erosion contributes to the degradation of ecosystems. Better estimation of soil erosion across landscapes is a necessary part of understanding ecosystem biogeochemical cycles and ecosystem sustainability. In this study, we used the Unit Stream Power-based Erosion Deposition (USPED) model to estimate the lateral movement of soils across Fort Benning, a military training installation in western Georgia, USA. A land cover weight factor was used in the calculation of surface flow accumulation. The simulation results were compared with observations of the total suspended sediments in stream water for ten watersheds, and showed a significant linear relationship (R2 = 0.72). Erosion estimates of the ten watersheds are also related to the land disturbance index that is a measure of the intensity of military training disturbances. Results suggest that the USPED model is an effective tool to quantify erosion and deposition at military installations.

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利用USPED模型和连续遥感土地覆盖观测估算土壤侵蚀

土壤侵蚀加剧加剧了生态系统的退化。更好地估算不同景观的土壤侵蚀是理解生态系统生物地球化学循环和生态系统可持续性的必要组成部分。在这项研究中，我们使用基于单位流功率的侵蚀沉积(USPED)模型来估计美国佐治亚州西部军事训练设施本宁堡的土壤横向运动。在地表水流累积的计算中，采用了土地覆盖权重因子。模拟结果与10个流域水系总悬浮沉积物观测值进行了比较，二者呈显著的线性关系(R2 = 0.72)。十个流域的侵蚀估计也与土地干扰指数有关，该指数是衡量军事训练干扰强度的指标。结果表明，USPED模型是量化军事设施侵蚀和沉积的有效工具。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Summer Computer Simulation Conference : (SCSC 2014) : 2014 Summer Simulation Multi-Conference : Monterey, California, USA, 6-10 July 2014. Summer Computer Simulation Conference (2014 : Monterey, Calif.)

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