水蝕 的英文怎麼說
中文拼音 [shuǐshí]
水蝕
英文
water erosion水蝕模數 specific degradation-
Yunnan province is located in one of the five water erosion areas in china - yungui plateau water erosion
雲南省位於我國五大水蝕區之一? ?雲貴高原水蝕區,水土流失以水力侵蝕為主。Gully erosion, which is universal on original lands, but also the special forms, for example, hole erosion gravel erosion debris slide and debris flow, which is unusual in loess area, ( 2 ) based on a long - term fixed point experiments in proving ground of the south stackpile, the soil erosion factors have been researched quantitatively, the runoff and erosion affected factors have been made sure and the experiential models of producing water and soil have been taken in newly - constructed stage, early stage and later stage of reclamation
確定南排土場原地貌的水蝕模數為3700 4400t km ~ 2 ? a ;在排土場新造地貌上,擊濺、面蝕、細溝侵蝕、淺溝侵蝕、沉陷侵蝕、砂礫化面蝕、土砂瀉溜和坡面泥石流等水土流失形式出現頻率和發生程度都明顯強于原地貌。 ( 2 )以南排土場徑流試驗場長期的定位觀測為基礎,對排土場未復墾時期、復墾初期、復墾後期的土壤水蝕影響因子進行定量研究,確定了徑流和土壤水蝕的主要影響因子及其臨界值,建立了產流產沙的經驗模型。According to the idiographic complexion of our country, the article elucidated the connotation of conservation tillage : it ' s a technology of tillage with minimum tillage or no - tillage so as to reduce the soil ' s disturbing, using stalk cover the field so as to decrease laboring and tillage ' s cost, preventing wind & water erosion, and improving the fertility of soil and the ability of fight a drought
摘要根據保護性耕作在我國的實施情況並結合國外已有研究結果,我們認為保護性耕作的內涵為:保護性耕作措施就是對農田實行少耕或免耕,盡可能減少對土壤的擾動,並以秸稈覆蓋地表,達到減少勞動強度和生產投入,防止農田風蝕和水蝕並提高土壤肥力和抗旱能力的一種農田耕作技術。The gullies are formed by the processes of infiltration - interflow - collapses. ( 2 ) in the slope with sand - loess, the major factors of water erosion are the rainfall intensity and rainfall amount of annual first rainfall. ( 3 ) in the region, the evolution processes of slope gully system results from alternative actions of sand deposition and water erosion
( 1 )有片沙覆蓋的斜坡小區,徑流量少,但徑流含沙率大,坡溝的形成過程是:垂直滲流坡地潛流崩塌; ( 2 )在沙黃土斜坡小區,每年春末夏初降雨的強度及降雨量是決定坡面產沙量的關鍵因素; ( 3 )該區坡溝系統的形成發育是風沙沉積、風蝕與水蝕交替作用的結果。Recent development of hillslope soil erosion models
坡面水蝕模型研究進展Review on soil erosion prediction in construction projects
開發建設項目水蝕量預測方法研究Prescription of soil anti - erosion capability under water erosion
水蝕作用下土壤抗蝕能力的表徵Research of small watershed water erosion prediction model based on svm
基於支持向量機的小流域水蝕預報模型研究Distributed water erosion prediction model for small watershed in loess plateau
黃土高原小流域分散式水蝕預報模型Using rsimweh, particle system and metaball to simulate the process of
遙感信息模型粒子系統與元球結合模擬坡面水蝕過程Study on predicting soil erosion in jiulong river watershed based on gis and usle
福建省東南沿海水蝕區土壤侵蝕遙感測報Nitrogen loss of loess soil as affected by nh4no3 applying in process of water erosion
水蝕條件下硝酸銨施用對黃綿土氮素流失的影響Aqueo - residual sand
水蝕餘砂Characteristics of different aspect of soil erosion in wind - water erosion crisscross region on loess plateau
黃土高原水蝕風蝕交錯帶土壤侵蝕坡向分異特徵Ii ) runoff erosivity reflects relationship of water erosion forces and sediment yield more directly than rainfall erosivity. it intergrated ability of runoff volume and flood peak on detaching soil and transporting sediment and is more reasonable than single runoff depth or flood peak volume
( 2 )以徑流侵蝕力代替降雨侵蝕力來反映水蝕營力與產沙量的關系更加直接,而且綜合了徑流量與洪峰在剝蝕土壤和搬運泥沙能力,比單獨運用徑流深或洪峰流量更加合理。Water erosion modeling on hillslopes ; formalization logic computational models ; dialectical logic computational models
坡面土壤水蝕建模形式邏輯計算模型辯證邏輯計算模型From the aspect of soil characters, aggregate distribution and stability as well as aggregate stability mechanism of ferrisols were studied in this paper, which would have great importance in reducing water erosion danger, stabilizing and improving agricultural production, preserving soil resources and balancing soil ecological system
本研究應用多種方法,從團聚體穩定性的角度,研究富鐵土對水力侵蝕的敏感性並探討其影響團聚體穩定的物理學機制,對于減小水蝕危害、保護土壤資源、維持和提高生產率、維護土壤生態系統平衡具有重要意義。Firstly the necessity of water erosion modeling on hillslopes is discussed. then existing water erosion models are generally divided into two types, formalization logic computational models and dialectical logic computational models according to the way of solving problems where the former can be further divided into four types - primarily empirically based, partially conceptually and partially empirically based, partially process based and partially empirically based, as well as theoretically based as weak points of the previous classification methods are concerned. finally characteristics of each type and their relationships are illust rated by examples
考慮到原有水蝕模型類型的不足,對當前水蝕模型按解題方法重新歸為形式邏輯計算模型及辯證邏輯計算模型兩類。其中,形式邏輯計算模型又分為經驗模型半概念半經驗模型半過程半經驗模型以及理論模型4類。結合實例闡述這幾類模型的主要特性及相關關系。Recent no - tillage and ridge culture commenced in the united states in the 1930s. it was developed to prevent the erosion of water and soil and to avoid the wind and water erosion. not until the atrazine herbicide was invented and successfully used in the 1960s was the nt technique succeeded and spread
近代的免耕始於20世紀30年代的美國,為了防治水土流失,防止風蝕和水蝕而發展起來的,到60年代,阿特拉津除草劑的發明利用,才使免(少)耕法得以成功應用和推廣。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。分享友人