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Quantitative evaluation of soil erosion of land subsided by coal mining using RUSLE

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International Journal of Mining Science and Technology 2012年第1期22卷 7-11页

作者： Meng Lei Feng Qiyan Wu Kan Meng Qingjun Internet of Things(Mine Perception)Research Center China University of Mining&TechnologyXuzhou 221008China School of Environment and Spatial lnformatics China University of Mining&TechnologyXuzhou 221116China Jiangsu Key Laboratory of Resources and Environmental Information Engineering Xuzhou 221116China

Based on a RUSLE model, we identified the key factors of the impact on soil erosion induced by coal min- ing subsidence. We designed a method for predicting/.S factors of a mining subsidence basin, using ana- lytical GIS spatial technology. Using the Huainan mining area as an example, we calculated the modulus of erosion, its volume and classified the grade of soil erosion for both the original area and the subsidence basin. The results show that the maximum modulus of erosion and the volume of erosion of the subsi- dence basin without water logging would increase by 78% and 23% respectively compared with the ori- ginal situation. The edge of the subsidence basin, where the land subsidence was uneven, is subject to the greatest acceleration in soil erosion. In the situation of water logging after subsidence, the maximum modulus of erosion would decrease if the accumulated slope length were reduced. This maximum mod- ulus around the water logged area within the subsidence basin is equal to that without water logging, while the total volume of erosion decreases. Therefore, mining subsidence aggravates soil erosion espe- cially at the edge of basins where water and soil conservation measures should be taken.

关键词： RUSLE Coal mining subsidence soil erosion Quantitative evaluation

Application of Remote Sensing in Study of Slope Land Use and soil erosion in Subtropic Region of China

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Pedosphere 1997年第3期7卷 237-242页

作者： ZENGZHIYUAN PANXIANZHANG InstituteofsoilScience AcademiaSinicaP.O.Box821Nanjing210008（China） InstituteofsoilScience Academia

This paper introduces briefly two remote sensing case studies on land use in the subtropic region of China. One is on slope land use in the Yangtze River Three Gorges area. This is a large area of 60497 *** of all, geometric correction and supervised classification were conducted for ten scenes of Landsat-5 TM or MSS images. The resolution of the processed images is 50 m ×50 m on ground. By the classification the land use/cover categories in this area were discriminated. Then the croplands including rice fields and upland fields were extracted from the land use/cover maps. Simultaneously the slope grade maps were prepared based on the topographic maps. Overlaying the slope grade maps and the cropland maps, the area and percentage of the croplands in different slope grades were determined. This case study indicated that 71.5% of the uplands was situated on the slope above 15° and 25% on the slope above 25° in this area. It is dangerous, and urgent cultivation or engineering measures should be taken. Another case study is on soil erosion in Linshan County of Guangxi Province. Airphoto interpretation and supervised classification of a Landsat TM image were carried out for discriminating land cover/use categories in an area of 3557.8 *** the soil erosion intensity grades were determined according to the land cover/use maps and slope *** wed discovered that the land suffering soil erosion accounted for 2404.0 km2, 67.6% of the total area of the county. Necessary measures to control soil erosion should be taken also.

关键词： land use remote sensing soil erosion subtropic region

An Integrated GIS/RS Approach for soil erosion Assessment and Modeling in Syrian Coastal soils

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Pedosphere 2001年第2期11卷 167-174页

作者： M．AL－ABED SHIZHOU 等 GeneralOrganizationofRemoteSensing（Gors） P.O.Box12586Damascus（Syria） InstituteofAgriculturalRemoteSensingandInformationSystemApplication ZhejiangUniversityHangzhou310029（China）

An integrated remote sensing (RS) and geographic information system (GIS) technique was employed to characterize the spatial distribution of the risk of soil erosion by water on Latakia district, Syria. The universal soil loss equation (USLE) was used to calculate the annual soil loss rates for Latakia soils. Mainly, remote sensing data, soil survey, land use inventory, elevation data and climatic atlases are used as resource data sets to generate USLE factor values. The results revealed that integration of GIS/RS with USLE was a practical and effective approach for monitoring soil erosion over large areas.

关键词： geographic information system remote sensing soil erosion universal soil loss equation (USLE)

REVIEW OF THE STUDY OF soil erosion ON THE LOESS PLATEAU

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Journal of Geographical Sciences 1990年第1期1卷 95-107页

作者： Chen Yongzong Institute of Geography CAS

This paper briefly describes the history of researches,the achievements and the problems in the field of soil erosion control on the Loess Plateau.

关键词： Loess Plateau soil erosion

Changes of soil erosion and Possible Impacts from Ecosystem Recovery in the Three-River Headwaters Region, Qinghai, China from 2000 to 2015

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Journal of Resources and Ecology 2019年第5期10卷 461-471页

作者： WANG Zhao WANG Junbang Key Laboratory of Ecosystem Network Observation and Modeling Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China School of Earth Science and Resources China University of Geosciences(Beijing)Beijing 100083China

soil erosion poses a great threat to the sustainability of the ecological environment and the harmonious development of human *** revised universal soil loss equation(RUSLE)was used to quantify soil erosion in the Three-River Headwaters region(TRH),Qinghai,China from 2000 to *** possible effects of an ecosystem restoration project on soil erosion were explored against the background of climatic changes in the study *** model was validated with on-ground observations and showed a satisfactory performance,with a multiple correlation coefficient of 0.62 from the linear regression between the estimations and *** soil erosion modulus in 2010–2015 increased 6.2%,but decreased 1.2%compared with those in the periods of 2000–2005 and 2005–2010,*** on the method of overlay analysis,the interannual change of the estimated soil erosion was dominated by climate(about 64%),specifically by precipitation,rather than by vegetation coverage(about 34%).Despite some uncertainties in the model and data,this study quantified the relative contribution of ecological restoration under global climatic change;meanwhile the complexity,labor-intensiveness and long-range character of ecological restoration projects have to be ***-ground observations over the long-term,further parameterization,and data inputs with higher quality are necessary and essential for decreasing the uncertainties in the estimations.

关键词： RUSLE model soil erosion climate changes ecosystem protection and recovery

ESTIMATION OF soil erosion IN A RESERVOIR WATERSHED USING 137CS FALLOUT RADIONUCLIDE

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International Journal of Sediment Research 2007年第4期22卷 304-317页

作者： Y. J. CHIU A. M. BORGHUIS H. Y. LEE Dept. of Civil Engineering National Taiwan Univ. Taipei Taiwan China 2. Utrecht Univ. Department of Physical Geography Heidelberglaan 2 3584 CS Utrecht The Netherlands 3. Dept. of Civil Engineering and Hydraulic Research Laboratory National Taiwan Univ. Taipei Taiwan China

Sedimentation from soil erosion is a critical reservoir watershed management issue. Due to the difficulty of field investigations, empirical formulas are commonly used to estimate the soil erosion rate. However, these estimations are often far from accurate. An effective alternative to estimating soil erosion is to analyze the spatial variation of 137Cs inventory in the soil. 137Cs can be adsorbed by the soil and is widely assumed to change its distribution only when disturbed by rainfall and human activities. Thus, 137Cs distributed in soils can be a useful environmental tracer to estimate soil erosion. In this study, the net soil loss estimate is 108,346 t/yr and the gross erosion and net erosion rates are 10.1 and 9 t/ha yr respectively. The sediment delivery ratio is therefore estimated to be 0.9 based on the two erosion rates. Because of the steep hillsides in the watershed, only 10% of the sediment yield stayed in the deposition sites and 90% was transported to the river as the sediment output. soil erosion estimates from spatial variations of the 137Cs activity in the Baishi river watershed showed satisfactory accuracy when compared to sediment yield data. Using soil 137Cs concentrations is therefore a feasible method for estimating soil loss or deposition in Taiwan. Data sampling, analysis and result of this approach are given in this paper.

关键词： soil erosion Radionuclide 137Cs Baishi watershed Spatial distribution Sediment yield

National assessment of soil erosion and its spatial patterns in China

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Ecosystem Health and Sustainability 2015年第4期1卷 29-39页

作者： Enming Rao Yi Xiao Zhiyun Ouyang Xinxiao Yu State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085 China University of Chinese Academy of Sciences Beijing 100049 China Key Laboratory of soil and Water Conservation and Desertification Combating of the Ministry of Education School of Soil and Water ConservationBeijing Forestry UniversityBeijing 100083 China

The spatial patterns of soil erosion(SE)are an important part of ecological security patterns and critical to erosion *** assessed the SE and its spatial distribution in China based on geographic information system(GIS)and spatial data sets using the Universal soil Loss Equation(USLE).The soil erosion area(SEA)and soil erosion amount(SEM)totaled 173.06 million ha and 8.87 billion Mg,respectively,with an average soil erosion rate(SER)of 9.39 Mg·ha^(-1)·yr^(-1).Slight erosion dominated from the aspect of SEA,whereas extreme erosion contributed the most in terms of *** heterogeneity in soil erosion was obvious in China,with heavily eroded areas mainly concentrated in the Loess Plateau,the Three Gorges reservoir area,and the hot,dry valley of the Jinsha ***,the provinces of Tibet,Sichuan,Yunnan,Xinjiang,Inner Mongolia,Gansu,Shaanxi,Shanxi,Guizhou,and Guangxi,and the basins of the Yangtze River,Yellow River,and southwestern rivers made a large contribution to the SEA and ***,soil erosion increased,then decreased with increasing slope and *** of 15-25°and 8-15°and elevations of 1000-2000 m were the most seriously *** and grassland ecosystems were major sources of SE,with their SEA and SEM accounting for 64.44%and 77.96%of the *** study revealed the current situation and spatial characteristics of SE in China on the national scale,which can serve as a scientific basis for regional SE control and decision-making policy.

关键词： China erosion rate GIS national risk assessment soil erosion spatial pattern Universal soil Loss Equation

Temporal and Spatial Conversion Analysis of soil erosion in the Three Gorges Region Based on RS and GIS Technique——A Case Study in Kaixian County

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Wuhan University Journal of Natural Sciences 2008年第3期13卷 369-376页

作者： NIE Yong FAN Jianrong YANG A＇qiang Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China Graduate University of Chinese Academy of Sciences Beijing 100049China Institute of Mountain Hazards and Environment Chinese Academy ofSciences Chengdu 610041 Sichuan China

In this paper, Kaixian County, situated in the hinterland of the Three Gorges Reservoir Region, was selected for the case study. Factors of soil erosion were obtained based on the technique of remote sensing （RS） and geographic information system （GIS）. Combining with field survey, soil erosion data in the years of 1988, 2000 and 2004 which covered the period from the beginning of the Three Gorges Reservoir Project to nowadays were investigated through the judgment model established on soil erosion intensity. With the function of spatial analysis in the geographic information system, the analysis and appraisal of dynamic soil erosion changes were carried out, and the spatial characteristics of the vicious change were highlighted, and the main causes of the vicious change of soil erosion were explored.

关键词： remote sensing(RS) geographic information system (GIS) soil erosion Kaixian County Three Gorges Reservoir Region

The history and assessment of effectiveness of soil erosion control measures deployed in Russia

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International soil and Water Conservation Research 2013年第2期1卷 26-35页

作者： Valentin Golosov Vladimir Belyaev Faculty of Geography Lomonosov Moscow State LniversitvGSP-1Moscow Russia Lomonosov Moscow State Lniversity GSP-1Moscow Russia

Research activities aimed at design and application of soil conservation measures for reduction of soil losses from cultivated fields started in Russia in the last quarter of the 19th century.A network of"zonal agrofor-estry melioration experimental stations"was organized in the different landscape zones of Russia in the first half of the 20th *** main task of the experiments was to develop effective soil conservation measures for Russian climatic,soil and land use *** most widespread and large-scale introduction of coun-termeasures to cope with soil erosion by water and wind into agricultural practice supported by serious governmental investments took place during the Soviet Union period after the Second World *** the Soviet Union collapse in 1991,general deterioration of the agricultural economy sector and the absence of investments resulted in cessation of organized soil conservation measures application at the nation-wide ***,some of the long-term erosion control measures such as forest shelter belts,artificial slope terracing,water diversion dams above formerly active gully heads survived until the *** the case study of sediment redistribution within the small cultivated catchment presented in this paper an attempt was made to evaluate average annual erosion rates on arable slopes with and without soil conservation measures for two time *** has been found that application of conservation measures on cultivated slopes within the experimental part of the case study catchment has led to a decrease of average soil loss rates by at least 2.52.8 *** figures obtained are in good agreement with previously published results of direct monitoring of snowmelt erosion rates,reporting approximately a 3-fold decrease of average snowmelt erosion rates in the experimental sub-catchment compared to a traditionally cultivated control sub-catchment.A substantial decrease of soil erosion rates on arable slopes has been equall

关键词： soil erosion soil conservation Sediment redistribution ^(137)Cs European Russia