erosion losses 中文意思是什麼
-
Therefore, it is the urgent need of land exploiture and environment repair that how to investigate the current situation of soil losses accurately, quickly and dynamically, how to predict & inspect soil losses, and provide scientific base for the repair of soil erosion and implement of soil and water conservation planning. otherwise, the survey method of soil losses is lagger in yunnan
如何準確、快速、動態地查清水土流失現狀，進行水土流失預報和動態監測，為水土流失治理和水保規劃實施提供科學依據，是土地開發與環境整治的迫切需要，而雲南省在水土流失調查方法方面恰恰處于相對落後狀態。 -
In light of current using situation and drawing on the experience of many scholars researched methods and viewpoints, this thesis made com land, fallow land, orchard, grass land as experimental field in black soil region jlau, which carried out experiment by applying different amounts of n and p fertilization in corn field. by means of collecting the samples of rainfall runoff, erosion silt and surface layer soil before and after rainfall for one year nature precipitation in field, we study the effect of surface runoff on n and p nutrient and fertility degeneration. the results showed : ( l ) there are lots of factors which affect soil erosion and losses of n and p, in which rainfall and rainfall intensity were more important, while rainfall intensity is the most important meteorological phenomena factor
針對當前黑土利用現狀，本文借鑒眾多學者的研究方法和觀點，在吉林農大黑土區選擇利用方式不同的玉米地、休閑地、果園、草地，在玉米區進行了不同數量的施肥，通過野外試驗，採集一年自然降雨產流及泥沙樣品，同時採集降雨前後的耕層土壤樣品，研究了黑土區地表徑流對氮磷養分特徵及肥力退化的影響，結果表明：土壤侵蝕和氮磷的流失受諸多因素的影響，降雨量、降雨強度是重要因子，而降雨強度是影響農田地表徑流養分流失的最重要的氣象因子，特別是暴雨，暴雨徑流中氮磷濃度較平時高得多；隨作物生長，覆蓋度逐漸增加以及不同利用方式下表現的覆蓋度差異，氮磷流失都表現為顯著的差異。 -
The results show that ( 1 ) the system of contour dams, contours and fallow had positive impact on water and soil losses than grass stripes and contour ditch. at the same time it was showed that contour dams, contours, fallow significantly reduced soil erosion and water loss, grass stripe and contour ditch had recorded reduction in water and soil losses although to a much less extent than above 3 farming systems. most of sediment was bed load in all the systems except in contour dams and contour fanning
研究的主要結論如下： 1 、運用坡面徑流小區法系統地研究了當地農業生產活動中不同農作措施下紅壤坡耕地水土流失特徵、土壤養分流失規律及形態特徵，結果表明： （ 1 ）同順坡農作措施相比：其它農作措施均具有明顯減輕水土流失的作用，等高土埂，等高農作、休閑處理控制水土流失的效果優於水平草帶和水平溝處理。 -
We systemically discussed the distribution of precipitation, dynamics of soil erosion in different land - use types, the relation between soil and water losses and some rainfall characteristics, such as rainfall amount, intensity, duration and prophase rainfall. further, rainfall erosion force was discussed and regression equations between soil and water losses and rainfall characteristics were founded
較為系統的探討了閩江上游地區的降雨分佈特徵，不同土地利用方式的水土流失動態，不同土地利用方式水土流失與降雨量、降雨強度、降雨歷時、前期降雨等的關系，在此基礎上，初步探討了閩江上游的降雨侵蝕力，並建立了不同土地利用方式水土流失與降雨特性有關的回歸方程。 -
The water cooling system of water - cooling conditiong unit was discussed requiring attention to design, focusing on the analysis of the cooling water circulation materials used, corrosion methods and algae mud treatment methods to improve equipment reliability and life expectancy, reducing erosion caused economic losses
摘要論述了海水水冷櫃機冷卻水系統設計中需要注意的海水管路設計，著重分析了冷卻海水管路的材料選取，防腐方法，以及海藻泥沙處理的方法，以期提高設備的可靠性和壽命，減少腐蝕所造成的經濟損失。 -
Soil erosion and nutrient losses in jiangjiatang watershed in lanxi city in zhejiang province during exploitation was studied from 1993 - 2000 using adoptive research methods such as runoff plot, catchment area, and rare earth element tracer ( eu ), and the soil fertility index appraisal. the major conclusions are as follow : 1. the principle of water and soil losses together with nutrients and the forms in which they were lost were studied under different fanning systems in runoff plot
本研究選擇浙江省中部金衢盆地邊緣蘭溪市水土保持監督站蔣家塘小流域為研究試驗點，以協作單位蘭溪市水土保持監督站小流域開發試驗區為基礎，採用坡面徑流小區法、單源匯水試驗區出口實測法、穩定性核素- eu土芯示蹤法研究了2000年坡耕地不同農作措施水土流失規律及養分流失規律和小流域綜合開發過程中水土流失規律及養分流失規律，並對小流域侵蝕土壤的肥力現狀進行評價。 -
Finishing quantitative remote sensing task on soil losses of 1998 and 1999 in study area. through running the pixel statistical program, we can obtain the results of soil erosion in the drainage basin - the total amount of soil losses of the experimental region were : 4. 84 million tons in 1998 and 8. 69 million tons in 1999 respectively. we also can obtain the results of control areas of soil losses in study area according to soil conservation intensity prediction model : the areas need to administrate was 317. 77 km2 and in dire need of administration was 17. 96 km2 in 1998
運行像元統計程序可獲得該流域土壤流失結果為： 1998年試驗區土壤流失總量為484 . 01萬噸， 1999年則為869 . 01萬噸；依防治強度預報模型可運算出研究區水土流失防治面積結果： 1998年需要治理的面積為317 . 77平方公里，急需治理的面積為17 . 96平方公里；而1999年需要和急需治理的水蝕面積上升為354 . 45平方公里和18 . 91平方公里。 -
In the first place, the study processed data of remote sensing and non - remote sensing to be digital, vector, raster and imagery geocode, established geographic database of soil erosion, and calculated elements " pixel maps of soil erosion. secondly, by using model builder of arcview to establish dynamic survey model of soil losses in longchuan river drainage basin. at last, to obtain maps of status & the forecast maps for soil conservation
首先通過遙感與非遙感資料的數字化、矢柵化及圖形圖像地理配準，建立了水土流失地理數據庫，並運算出水土流失各因子像元圖；在此基礎上，憑借arcview子模塊modelbuilder的支撐，建立龍川江流域水土流失動態監測模型；最後運行該模型獲取水土流失現狀圖和防治預報圖等結果圖件，完成了研究區1998 、 1999年水土流失定量遙感監測任務。 -
A quantitative method of rs for monitoring soil losses based on gis and the formula and algorithm of each model factor about the revised universal soil loss equation ( rusle ) are described in this paper, the spatial distribution law of soil erosion is discussed and the amount of soil loss of the small watershed is predicted running the model of rusle by the support of gis
摘要以三峽庫區典型小流域為研究區域，通過遙感和野外調查進行信息採集，建立了流域環境數據庫；在gis支持下，根據修正通用土壤流失方程（ rusle ）模型對數據庫實施運算操作，探討了流域內土壤侵蝕強度的空間分佈規律，並估算了小流域水土流失量。 -
Soil crust, a common phenomenon for many soils worldwide, plays an important role in water and soil losses. soil seals and crusts can significantly reduce soil infiltration rate and subsequently lower the utilization of water resources, increase runoff, and induce heavier soil erosion
造成水土流失一個極其重要的原因是降雨引起的土壤表面結皮，降低了土壤的入滲性能，增加丁土壤表面的徑流，加大了土壤侵蝕。 -
The article uses a long series of monitoring materials for hydrology suspended load measurement to establish the hydrology model of water and soil losses in anhui province with hydrology method, which grasps the rules of soil erosion effectively
摘要文章利用長系列水文懸移質監測資料，用水文學法建立安徽省水土流失模型，較好地掌握了安徽省水土流失的規律。
分享友人