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首页> 外文期刊>Natural Hazards >Investigating spatial contribution of land use types and land slope classes on soil erosion distribution under tropical environment
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Investigating spatial contribution of land use types and land slope classes on soil erosion distribution under tropical environment

机译：调查土地利用类型的空间贡献与热带环境下土壤侵蚀分布的空间贡献

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摘要

Increasing land occupancy for farming without conservation principles, particularly in the Indonesian island of Java, is resulting in a severe erosion problem. This study investigated the characteristics of soil erosion and the spatial contribution of land use and land slope on erosion under the tropical climate in a watershed scale. The Revised Universal Soil Loss Equation model with locally source parameters assessment in a Geographic Information Systems was used for soil erosion calculation. Erosion (in unit t ha(-1) yr(-1)) and land slope were classified into five classes. Meanwhile, the types of land use were classified into six types. The results showed critical erosions largely occurred in steeply sloping areas, where the main source of erosion was farmland. We found that land cultivation practices have more potential to increase soil erosion in slopes steeper than 15%, and the large amount of erosions were generated from some small areas of the watershed. This study also demonstrated the land slope and erosion correlation equations for five land slope classes, which detected that the largest effect of land slope on erosion was recognized in the low sloping areas. These findings indicated erosion studies in various land slope zones were necessary to understand the uniqueness of erosion in specific land slope areas. The present study provides a fundamental knowledge of land slope zonations for erosion control planning particularly in high-risk erosion areas.
机译：在没有保护原则的情况下增加土地占用，特别是在印度尼西亚爪哇岛，导致严重的侵蚀问题。本研究调查了流域规模热带气候下土地利用和土地利用空间贡献的特点。作者对地理信息系统中局部源参数评估的修订后的通用土壤损失方程模型用于土壤侵蚀计算。侵蚀（在单位t ha（-1）yr（-1））和陆坡被分为五类。同时，土地使用类型分为六种类型。结果表明，在陡峭倾斜的地区大部分发生了关键侵蚀，主要是侵蚀的主要来源是农田。我们发现，土地培养实践在陡峭的倾斜度上增加了比15％的倾斜侵蚀更多，并且从分水岭的一些小区域产生了大量的侵蚀。该研究还证明了五个陆坡等级的陆坡和侵蚀相关方程，该坡度检测到，在低倾斜区域中，落地造成土地坡度的最大效果。这些发现表明在各种陆坡区域中的侵蚀性研究是必要的，以了解特定陆坡区域侵蚀的唯一性。本研究为侵蚀控制规划的土地斜率区划的基本知识，特别是在高风险侵蚀区域。

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