侵蚀速率
- 网络erosion rate;soil erosion rate
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用~(36)Cl研究灰岩侵蚀速率的理论与方法
Theory and Method of Determining Erosion Rate in Limestone With ~ ( 36 ) Cl
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表观侵蚀速率随渣中Al2O3含量的减少和温度的升高而增大;
Apparent erosion rate increases with the Al2O3 content decreases in the slags and the temperature rises .
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利用~(137)Cs示踪农业耕作土壤侵蚀速率的定量模型
Quantitative model to estimate soil erosion rates using caesium-137 for cultivated soil
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基于~(137)Cs地表富集作用的土壤侵蚀速率的定量模型
Quantitative Model Considering Surface Enrichment to Estimate Soil Erosion Rates Using 137 Cs
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~(137)Cs技术测量土壤侵蚀速率常用模型讨论
Discussion on Several Models Used in Converting ~ ( 137 ) Cs Measurement to Soil Erosion Rates
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~(137)Cs法测算黄土高原土壤侵蚀速率的初步研究
A preliminary assessment of the potential to use ~ ( 137 ) cs to estimate the rates of soil erosion in the Loess Plateau of China
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小流域侵蚀速率与产沙关系的~(137)Cs、~(210)Pb(ex)示踪研究
Study on the Relationship between Soil Erosion Rate and Sediment Yield in Small Watershed by ~( 137 ) Cs and ~( 210 ) Pb_ ( ex ) Tracing Method
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黄壤质地粘重,抗蚀性好,坡度29°的陡坡耕地的侵蚀速率仅2509t/(km2·a)。
However , erosion on cultivated yellow soils is not as severe as on the purple soils because of its clayey texture and high erosion resistance . The erosion rate on the slope of 29 ° is 2 509 t / ( km ~ 2 · a ) .
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定量转换模型的选用是137Cs技术测量土壤侵蚀速率的一个关键,从最初的经验公式到现在的理论模型,形成了定量转换模型的两大主要类型。
The choice of a quantitative conversion model is a key to the () ~ ( 137 ) Cs measurement to estimate soil erosion rate . Two main kinds of models including preliminary empirical equations and recent theoretical models have been established .
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本文简要介绍了137Cs示踪技术的基本原理,以及在黄土高原、长江上游等地侵蚀速率测定,泥沙来源调查,塘库沉积物断代等研究中的一些应用实例。
This paper will introduce the bases of the technique and shows several case studies of assessment of soil erosion rates , investigation of sediment sources and dating of reservoir deposits by using the technique in the Loess Plateau and the Upper Yangtze River Basin .
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介绍了7Be的来源、散落特征及其在土壤颗粒中的存在形态,阐述了7Be示踪技术现有的土壤侵蚀速率定量估算模型,提出了我国开展7Be示踪土壤侵蚀过程研究的建议。
The authors introduced ~ 7Be origin source , fallout characteristics , forms in soil particles , and presented quantitative estimate model of soil erosion rate by using ~ 7Be as a tracer . The comments on using ~ 7Be as tracer for soil erosion research in China are presented .
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揭示了在不同生物化学条件下,210Pb的行为特征和影响因素,并将210Pbex示踪碳酸盐岩区域土壤侵蚀速率结果与湖泊沉积速率相耦合,证明了利用210Pb示踪土壤侵蚀的可行性。
210 Pb geochemical behaviour in the soils and sediments and its effecting factors was studied under different conditions . The coupling relationship between soil erosion rates traced by 210 Pb and lake sedimentation proved that 210 Pb was reliable for tracing accumulation rate of soil particles .
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地史时期土壤侵蚀速率方法主要介绍了阶地剖面方法和宇宙核素法。
The latter include terrace profile method and cosmogenic nuclides method .
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构造变形会造成黄土产生构造裂隙、节理,增大黄土的侵蚀速率,促进黄土的坍塌和滑坡等侵蚀灾害的发生;
The structure deformation resulted in loess collapse and landslide ;
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川中丘陵区小流域自然侵蚀速率的初步研究
Preliminary Study on Natural Erosion Rates in Small Watershed of Sichuan Hilly Basin
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贵州碳酸盐岩区域的侵蚀速率及环境效应研究
Study on Watershed Erosion Rate and Its Environmental Effects in Guizhou Karst Region
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材料侵蚀速率的计算,d。
Calculation of erosive rate of material . d.
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黑土侵蚀速率及其对土壤质量的影响
Study on black soil erosion rate and the transformation of soil quality influenced by erosion
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宇宙成因核素~(10)Be:估算长江流域侵蚀速率的新方法
Cosmogenic Nuclides ~ ( 10 ) Be : New Approach to Estimate Erosion Rate of Yangtze Catchment
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结果表明,黄土高原坡地土壤侵蚀速率存在明显的空间格局,即山坡中、上部是土壤侵蚀最为严重的地带,土壤平均侵蚀速率高达82.8t/hm2.a以上;
The result indicated there are evident spatial patterns of soil loss and gain in the Loess Plateau .
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黄土高原沟谷侵蚀速率研究&以洛川黄土源区为例
Study of the Gully Erosion Rates on the Loess Plateau ── Taking Luo Chuan Yuan As an Example
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因此,如果能扣除后面的两个组分,即可获得源区的侵蚀速率。
Therefore , if the latter two components can be deducted , we can get the erosion rate .
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对目前国内外土壤侵蚀速率研究方法进行了综合分类与介绍。
In this paper , methods of measuring soil erosion rate which are used at present in the world are discussed .
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结果表明,不同岩类区与不同时期的泥沙流失量是不同的,与全新统比较,前震旦纪浅变质岩区水土保持较好,侵蚀速率下降;
Compared with the Holocene , Presinian epimetamorphic rocks region kept the soil and water losses less and the erosion rate descended .
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通过大量的实验,抗渣试验采用静态坩埚法,计算侵蚀速率;
The slag corrosion resistance was studied by static crucible and the speed of corrosions was calculated on the basis of repeated experiments .
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但有关坡地景观尺度土壤侵蚀速率的定量资料却相对较少。
However , little has been studied on quantitative assessment of spatial variability of soil erosion at different landscape scales in this area .
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而外源水对白云岩的侵蚀速率在10-8mmol/cm2·s数量级,或约200mm/ka。
Whereas , for dolomite , in the order of 10 - 8 mmol / cm 2 · s , or 200 mm / ka .
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阐述了核素比率应用的原理、特点及其能更为敏感地反映土壤侵蚀速率和过程等优点;
The principle and characteristics of the nuclides ratio technology are introduced , using several nuclides compoundly to distinguish soil erosion processes and to estimate soil erosion rate ;
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这种方法能够考虑地形、重力、摩擦力、动力学、沉积和侵蚀速率等因素,同时还综合了随机的成分以便考虑储层的不确定性。
This method can consider some factors such as terrain , gravity , friction , dynamics , deposition and erosion rate , as well as integrate random processes to consider reservoir uncertainties .
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相同坡度和坡长条件下,幼龄板栗园的土壤侵蚀速率>雷竹园>稀疏马尾松林地>茶园。
At same slope degree and length , the soil erosion rate was decreased with the order of young chestnut garden > bamboo field > sparse masson pine forest land > tea garden .