elements of soil erosion 中文意思是什麼
elements of soil erosion
解釋
土壤侵蝕原理-
The patch, cor - ridor, matrix, edge are the main elements according to remote sensing information and material from regional geological mapping in headstream region ， and based on the spatial structure features of soil erosion on three scales
根據黃河河源區地質調查所獲實際資料和遙感影象信息，從3個不同的等級層次對河源水土流失的空間結構特徵進行了研究。 -
By placing different rare earth elements ( ree ) in different soil depth and different section across one slope in an indoor plot, one simulated rainfall was applied to study the spatial - temporal process both of depth and section erosion across one slope plot simultaneously
摘要室內交叉布設不同的稀土氧化物，通過人工模擬次降雨，在同一試驗條件下，對坡面侵蝕沿順坡方向和深度方向的演變過程同時展開研究。 -
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。 -
The objectives of this study were : i ) to understand the mechanism of applying polyacrylamide ( pam ) to control crust formation, to increase infiltration and reduce soil erosion ; and ii ) to quantify the dynamics of soil erosion processes with rare earth elements ( ree ) tracers
本文的目的是研究利用聚丙烯酰胺（ pam ）作為土壤改良劑來抑制土壤表面結皮，增加降水入滲，減少土壤表面徑流，降低土壤侵蝕；同時採用稀土元素（ ree ）示蹤土壤侵蝕的動態過程，研究土壤侵蝕的動力學機理。
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