Return to article details prediksi laju erosi menggunakan metode usle universal soil loss equation di desa karang tengah kecamatan babakan madang. Among all the predictive equations developed to estimate soil loss, the most accepted, used, convenient and suitable technique, for smaller areas like hillslopes and fields, is the universal soil loss equation usle. The objective of this study was to quantify soil erosion in the a sap river basin, a luoi district, thua thien hue province, vietnam, using the universal soil loss equation usle. Revised universal soil loss equation for application in canada. Regardless of whether the designation is fully accurate, the name does dis tinguish this equation from the regionally based soil loss equations.
Pendugaan erosi dengan metode usle universal soil loss equation di situ bojongsari, depok oleh. The value approximates the difference between the usle soil loss and the sediment discharge from rusle version 2. If a sediment control practice is specified, then the soil discharge is further reduced relative to the efficiency of the practice. It developed from the universal soil loss equation usle developed in the us department of. Improvement of the kfactor of usle and soil erosion. The usle was first implemented by the usdasoil conservation service now natural resources conservation service in the early 1960s. View of prediksi laju erosi menggunakan metode usle universal. Soil loss through rill, gully and sheet erosion is a major environmental problem in india. The revised universal soil loss equation rusle renard, et al. Based on the data assembled at the data center and previous studies, wischmeier, smith, and others developed the universal soil loss equation usle. The accuracy of the usle is best summarized by wischmeier 1976 as follows.
The universal soil loss equation usle is a widely used mathematical model that describes soil erosion processes erosion models play critical roles in soil and water resource conservation and nonpoint source pollution assessments, including. In using sediment deliver y ratios for this purpose, it is assumed that the sediment delivery ratio for a given hillslope d oes not vary with. Metoda ini sebagai suatu persamaan hanya dapat menduga. The universal soil loss equation was developed to predict the annual soil loss from fieldsize small areas. The universal soilloss equation is written a rklscp. The equation reliably predicts soil loss on an annual basis, but there is a need to be able to accurately predict soil loss for durations ofless than one year. This study pertains to sheet erosion only and all computations were done on a perstorm basis. The universal soil loss equation southwest watershed research. The structural stability of the soil also determines its erodibility factor. Estimation of soil erosion risk using the universal soil. Included in the electronic ah703 is an updated fig. Soil on a steep slope is more likely to be carried in water runoff than soil on flat ground.
Application of usle and gis to predict erosion loss at. Erosion index is a measure of the erosive force of a specific rainfall k soil erodability factor erosion rateunit of erosion index for a specific soil in. The disturbed site is 50 acres in size, with an average gradient of 8% and an average slope length of 500 feet. It does not predict soil loss resulting from gully erosion. This site contains the official nrcs version of rusle2. Nov 28, 2014 data limpasan yang digunakan sebagai input dalam metode musle diperoleh dari hasil optimasi aplikasi model tangki. The usle was first implemented by the usda soil conservation service now natural resources conservation service in the early 1960s. Estimation of soil erosion risk using the universal soil loss. Metode yang digunakan pada penelitian ini adalah metode usle universal soil loss equation dengan pendekatan sistem informasi geografis. Today, a quarter of a century after its publication, the usle remains the primary tool of conservationists for planning purposes. Universal soil loss equation usle and its revised version, rusle. Nov 30, 2014 this video was created by group 1 of dr.
Assume syracuse, new york, as the locale of a construction site. Metode usle universal soil loss equation merupakan metode yang umum digunakan untuk memperediksi laju erosi. Dalam penelitian ini peneliti menggunakan metode usle universal soil loss equation untuk mengetahui prediksi laju erosi. To compute the sediment yield by use of usle, the computed soil loss using usle is. Smith, has been the most widely accepted and utilized soil. Pdf assessment of soil loss by universal soil loss equation. Estimating your soil erosion losses with the universal soil. The objective of this study was to quantify soil erosion in the a sap river basin, a luoi district, thua thien hue province, vietnam, using the universal soil loss equation usle and geographical information system gis.
Musle does not include soil loss that can occur through ephemeral gully or gully erosion processes or erosion of furrows or basins during gravity irrigation events. P, dengan a sebagai besar laju erosi, r adalah erosivitas hujan, k adalah erosibilitas tanah, ls adalah faktor kelerengan, c adalah faktor pengelolaan tanaman dan p adalah faktor tindakan. Many techniques and studies realized worldwide were done about the evaluation of soil loss. Tindakan konservasi harus melihat aspek sosial, ekonomi, dan kondisi riil di lapang. Smith, has been the most widely accepted and utilized soil loss equation for over 30 years. Erosion prediction revised universal soil loss equation rusle the revised universal soil loss equation rusle is an easily and widely used computer program that estimates rates of soil erosion caused by rainfall and associated overland flow. Information inthis circular is basedon agricultural handbook 537 published by thescience and education. The universal soil loss equation usle predicts the longterm average annual rate of erosion on a field slope based on rainfall pattern, soil type, topography. There are several general conditions, unique to any site, which effect erosion by water, and which are factors in the usle or rusle equation. It was not created to consider deposition or route sediment from a hill slope element. It developed from the universal soil loss equation usle developed in the us department of agriculture and has other similar variants such as the modified usle musle and abag allgemeine bodenabtragsgleichung. Tableofcontents illinoiserosioncontrolprogram 1 theuniversalsoillossequationusee 1 rainfallrfactor 2 soilerodibilitykfactor 2 slopelengthandsteepnesslsfactor 3 croppingandmanagementcfactor 3 conservationpracticespfactor 5 usingtheusee 6 workingthroughsomeexamples 6 solvingtheuseeforc 7 gettinghelp 7 tables 816. Adjusting the cpmax factor in the universal soil loss equation usle.
Selain sederhana, metode ini juga sangat baik diterapkan di daerahdaerah yang faktor utama penyebab erosinya adalah hujan dan aliran permukaan. Furthermore, usle 12 is recommended as the basis for soil loss estimation as shown in equation 1. Ochsners fall 2014 soil physics class at oklahoma state university. Erosion prediction usle used for hel, nri, and other. Universal soil loss equation usle universal soil loss equation usle a. Method factsheet rusle revised universal soil loss. Central vietnam is very susceptible to soil erosion due to its complicated terrain and heavy rainfall. In contrast, soil loss is much more sensitive to changes in slope steep ness than to errors in slope length.
Universal soil loss equation taiwan soil and water conservation manual 18 clearly stipulates that whenever slopeland is involved in nonagricultural development, soil loss estimation before, during, and after development must be conducted. The usle was developed by a team of scientists working under the leadership of walter h. Rusle has a more linear slope steepness relationship than did the usle. Prediksi erosi dengan usle dan sistem informasi geografi a. When these predicted losses are compared with given. Pendugaan erosi dengan metode usle universal soil loss. The sediment discharge is the soil loss less a deposition value that varies based on soil type, slope, and slope length. The slope length and steepness factors were extended for long slope lengths and steep slopes by recalculating the data from available literature in japan and by using data from supplementary erosion experiments. Universal soil loss equation usle a r x k x ls x c x p. Universal soil loss equation usle the usle, developed by ars scientists w. Usle developpy,ed by scientists at ars, scs, purdue univ. Thename universal soil lossequationoriginatedasameans.
Rusle was developed in 1987 by the nrcs, and is based on the earlier usle published by the scs in 1978. The usle has beem used in more than 100 countries to guide connservation planning, assess soil erosion for conservation policy development, and. Parameterparameter yang diperhitungkan untuk pendugaan dengan metode usle adalah erosivitas hujan r, erodibilitas tanah k, panjang lereng l, kemiringan lereng s, pengelolaan tanaman c, dan konservasi tanah p. By 1940, sufficient data had been collected for zingg. Revised universal soil loss equation, version 2 official nrcs rusle2 program and official nrcs database. Roose erosion has for centuries been an obstacle to development. Analisis erosi dengan menggunakan metode usle universal soil. Perhaps no other development in soil and water conservations first 50 years has had as much impact on conservation efforts as development of the universal soil loss equation. Usle and rusle approach important tools for soil erosion. Pdf evaluation of usle and rusle estimated soil loss on. Soil losses computed by the equation must be recognized as the best.
Universal soil loss equation usle at the national runoff and soil loss data center in 1954 by the u. Usle, which has been used successfully on cropland since the early 60s was adapted to estimate erosion on. Universal soil loss equation usle, originally developed by the usda for agricultural lands and then used throughout the world, was applied in mountainous forest terrain in japan. Ah282, published in 1965, documents the usle at that time.
The usle was developed 5,at the national runoff and soil loss data center estab. Its purpose is to provide an understanding of how the universal soil loss equation. It is the only version of rusle2 to be used for official purposes by nrcs field offices. Musle merupakan modifikasi dari model penduga erosi universal soil loss equation usle yang merupakan model empiris yang dikembangkan di pusat data aliran permukaan dan erosi nasional, dinas penelitian pertanian, departemen penelitian amerika serikat usda bekerja sama dengan. A large number of studies have been carried out using geostatistical methods to estimate the spatial vulnerability of soil erosion by water using the universal soil loss equation usle and the revised soil loss equation rusle buttafuoco et al. Soil erosion of hungary assessed by spatially explicit modeling. Upland sediment loading due to hillslope erosion was modeled using the universal soil loss. Thus,whenthekvaluewasdetermined with natural storm data, it represented a range of storm sizes and antecedent soil conditions later similar experiments wereperformed using rainfall simulators and produced a soil erodibility nomograph wischmeier and. Revised universal soil loss equation rusle, an online tool for soil erosion assessment and conservation planning. The universal soil loss equation usle or the revi sed universal soil loss equation rusle are often used together with sediment deliv ery ratios in order to predict sediment delivery from hillslopes. Consequently, man has tried to remedy this in diverse ways terraces, reservoirs, itinerant cultivation, etc. In the usle, for example, a 10% error in slope steepness will usually give about a 20% error in computed soil loss. Nurina endra purnama f14104028 2008 departemen teknik pertanian fakultas teknologi pertanian institut pertanian bogor pendugaan erosi dengan metode usle universal soil loss equation di situ bojongsari, depok skripsi sebagai salah satu syarat untuk memperoleh gelar sarjana teknologi pertanian.
Assessment of soil loss by universal soil loss equation usle model using gis techniques. Pendugaan erosi dengan metode usle universal soil loss equation. Salah satu metode untuk menduga atau menghitung nilai erosi melalui pendekatan usle universal soil loss equation. Use of the universal ssil loss equation to predict erosion in west africa e. Tujuan dari praktikum ini adalah untuk menghitung besarnya erosi permukaan yang terjadi pada daerah giritontro dengan menggunakan metode universal soil loss equation usle. Analisis pengaruh erosivitas hujan r terhadap laju erosi dengan menggunakan metode usle universal soil loss equation di wilayah. The universal soil loss equation usle enables planners to predict the average rate of soil erosion for each feasible alternative combination of crop system and management practices in association with a specific soil type, rainfall pattern, and topography. The usle provides a method for predicting longterm average annual soil losses under specific physical conditions, tillage practices, and cropping systems wischmeier and smith, 1972. This equation does not compute the sediment yield from the watershed, directly. Universal soil erosion equation for questions 17, determine what the rate of soil erosion will be without factoring in sustainability measures for two different sites in jordan.
Application of universal soil loss equation usle to. A represents the potential longterm average annual soil loss in tonnes per hectare tons per acre per year. This equation provides an estimate of the soil loss rate in tonshectareyear. Nov 27, 20 metode metode yang sering digunakan untuk mengukur tingkat laju erosi dapat menggunakan metode usle dan metode guest. The universal soil loss equation usle and the revised universal soil loss equation rusle 1. Usle was the first empirical erosion equation that was not tied to a specific region of the united states, thus the title universal soil loss equation. Most of them are using the universal soil loss equation usle and its revised version rusle 16.
Metode usle metode usle universal soil loss equation merupakan metode prediksi erosi model parametrik berdasarkan hubungan antara faktor penentu erosi dengan besarnya erosi. Pdf comparison of different approaches to ls factor calculations. Revised universal soil loss equation 2 rusle2 documentation. The universal soil loss equation usle equation 1 was developed by the united states department of agriculture usda for estimating sheet and rill erosion from agricultural fields under specific conditions wischmeier and smith, 1978. Rusle, previously the universal soil loss equation usle, was developed to estimate average annual soil loss from agricultural fields. Use of the universal soil loss equation to predict erosion. Using the tmdl usle tool to estimate sediment loads.
Taken together with s, the steepness of slope, ls is the ratio of soil loss to a plot 22 m long with a 9% slope. Erosion models play critical roles in soil and water resource conservation and nonpoint source pollution assessments, including. Estimating your soil erosion losses with the universal. The universal soil loss equation usle has been developed to estimate the rate of soil loss due to sheet and rill erosion on cultivated fields. A jumlah tanah hilang maksimum thatahun r faktor erosivitas hujan k faktor erodibilitas tanah ls faktor indeks panjang dan kemiringan lereng c faktor indeks pengelolaan tanaman. Pdf geographic information systems gis in combination with soil loss models.
Erosi aktual berdasarkan nilai rklscp yang memiliki nilai lebih tinggi dari erosi yang dapat ditoleransi tsl memerlukan tindakan konservasi, begitu sebaliknya. Usle universal soil loss equation the universal soil loss equation for construction sites excel worksheet was developed by dane county water resource engineering to estimate soil loss from sheet and rill erosion on construction sites. These equations, originally developed to predict soil loss or movement from agricultural fields, but since expanded to include forestlands and rangelands, are instructional because. The universal soil loss equation was modified b y williams with the resulting equation termed the modified usle musle. Method factsheet revised universal soil loss equation. The usle was developed on midwestern us cropland to predict average annual soil loss caused by sheet and rill erosion from a hill slope element. The universal soil loss equation usle is a widely used mathematical model that describes soil erosion processes. The universal soil loss equation usle is an empirical model that estimates net hillslope erosion. The revised universal soil loss equation rusle is an empirical erosion model recognised as a standard method to calculate the average risk of erosion on arable land. Membersstudents will know and understand the definition of soil erosion factors and soil conservation strategies. Erosi dengan menggunakan metode usle universal soil loss equation. This is the amount, which is compared to the tolerable soil loss limits. Estimating soil erosion in tennessee using the universal. Universal soil loss equation usle a r x k x ls x c x p a represents the potential longterm average annual soil loss in tonnes per hectare tons per acre per year.
Pdf penilaian erosi berdasarkan metode usle dan arahan. The musle allows the es timation of soil losses for eac h precipitation. The soil is a schoharie silt loam with a k value of. Metode penelitian yang digunakan untuk mengetahui tingkat bahaya erosi ditentukan berdasarkan rumus universal soil loss equation usle dan arahan konservasi mengacu pada modifikasi dari kumajas. The process of water erosion has been described by the usda universal soil loss equation usle, later modified to the revised universal soil loss equation rusle. Erosion prediction revised universal soil loss equation. More than 10,000 plotyears of basic runoff and soil loss data were then collected from u. Revised universal soil loss equation, version 2 nrcs. Application of the universal soil loss equa tion to. Areas in need of soil erosion protection in the czech republic. Usle is an estimate of sheet and rill soil movement down a. Introduction universal soil loss equation usle montana. Metode prediksi laju erosi dilakukan dengan model empiris menggunakan persamaan rusle revised universal soil loss equation.
Designed as a method to predict average annual soil loss caused by sheet and rill erosion, the usle is often criticized for its lack of applications. Universal soil loss equation usle and revised universal soil loss equation rusle. Metode persamaan usle dikembangkan oleh wischmeir dan smith 1978, dalam asdak, 2010. The nrcs developed and maintains the database components on this site. In1965 was depended on the analysis of 10,000 plotyears of data under natural rainfall conditions collected mostly on agricultural plots, where rainfall data are used to design soil erodibility and. Metoda usle metoda usle adalah model erosi yang dirancang untuk memprediksi ratarata erosi tanah dalam jangka panjang dari suatu areal usaha tani dengan sistem pertanaman dan pengelolaan tertentu wischmeir, 1978. The usle has beem used in more than 100 countries to guide connservation planning, assess soil erosion for conservation policy development, and estimate sediment yield. Developed to predict longterm average annual soil loss from erosion on uniform cultivated fields in eastern u.
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