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semiarid adj.半干旱的。

semiautomated

In this study , three typical high - resolution holocene soil profiles in the weihe valley were studied using particle - size analysis , measurement of magnetic susceptibility , total fe , toc , caco3 , rare earth elements and others . the results provide new insights into pedogenic environmental evolution and human impact of cultivation on soil development in this climatically sensitive semiarid zone 通過對各指標實驗結果及其成壤環境意義的分析,探討了全新世渭河流域成壤環境的演變以及土壤發育的特點;并借助歷史文獻和環境考古的成果,分析了人類活動與成壤環境之間的相互作用及其人地關系演變的過程。

Because the shenfu - dongsheng mine area is located in intermediate of arid and semiarid zone , its ecological environment is very fragile . based on the fragileeco - environmental , the coal mining and construction have brought out some new environmental problems . man - made debris flow problems is the most serious of them which caused by coal mining , construction of railway and highway as wellas exploiting stone . through a great deal of experiments of artificial simulation setting water rushing to two types of slope debris flow and debris flow gully in shenfu - dongsheng mine site , the characteristics is favourable to formation of debris flow ; ( 2 ) the waste gangue is easy to initiate and is main solid material of debris flow in this area ; ( 3 ) the whole debris flow process could be observed through the model simulation experiment of debris flow gully . at present , this experiment method is the best way to analyze debris flow genesis and process 神府東勝礦區位于黃土高原北部干旱半干旱過度地帶,由于煤田的大量開采,誘發了大量的環境問題,尤以人為泥石流最為嚴重.本文以神府-東勝礦區人為泥石流為研究對象,采用人工放水沖刷模擬實驗的方法,分析了坡面型和溝谷型泥石流源地松散體起動、產沙、泥石流過程的特性,所得結論為: ( 1 )放水歷時長、強度大,有利于泥石流的形成; ( 2 )棄土石渣易起動,是該區泥石流固體物質的主體; ( 3 )溝道型泥石流放水沖刷模擬實驗,便于觀測泥石流的全過程,坡面型泥石流放水沖刷模擬實驗,利于統計產沙、觀測侵蝕形態

Abstract : because the shenfu - dongsheng mine area is located in intermediate of arid and semiarid zone , its ecological environment is very fragile . based on the fragileeco - environmental , the coal mining and construction have brought out some new environmental problems . man - made debris flow problems is the most serious of them which caused by coal mining , construction of railway and highway as wellas exploiting stone . through a great deal of experiments of artificial simulation setting water rushing to two types of slope debris flow and debris flow gully in shenfu - dongsheng mine site , the characteristics is favourable to formation of debris flow ; ( 2 ) the waste gangue is easy to initiate and is main solid material of debris flow in this area ; ( 3 ) the whole debris flow process could be observed through the model simulation experiment of debris flow gully . at present , this experiment method is the best way to analyze debris flow genesis and process 文摘:神府東勝礦區位于黃土高原北部干旱半干旱過度地帶,由于煤田的大量開采,誘發了大量的環境問題,尤以人為泥石流最為嚴重.本文以神府-東勝礦區人為泥石流為研究對象,采用人工放水沖刷模擬實驗的方法,分析了坡面型和溝谷型泥石流源地松散體起動、產沙、泥石流過程的特性,所得結論為: ( 1 )放水歷時長、強度大,有利于泥石流的形成; ( 2 )棄土石渣易起動,是該區泥石流固體物質的主體; ( 3 )溝道型泥石流放水沖刷模擬實驗,便于觀測泥石流的全過程,坡面型泥石流放水沖刷模擬實驗,利于統計產沙、觀測侵蝕形態

And a embedded research on models and its theoretical foundation as well as its technique system have been carry out in semiarid area of gansu by the ways of systematical analysis , typical research and qualitative cases analysis . some results that have practical mean have been gained . 1 并采用系統分析、典型研究與定性案例分析相結合的研究方法,以甘肅半干旱區為研究對象,對其模式及其理論基礎、技術體系進行了深入的研究,取得了一些具有指導實踐意義的結論。

Based on systematical summarize the achievements of catchment agriculture research done by gansu agricultural science academy during the past 15 years . a research title of high effective rainwater use models of catchment agriculture in semiarid area has put forward for the purpose of further raise natural precipitation water use efficiency ( wue ) and complete high effective rainwater use 本文在系統總結甘肅省農科院進行集水農業研究15年來所取得的成果的基礎上,為進一步提高有限降水資源的利用率,實現高效用水的目的,提出了半干旱區集水農業高效用水模式的研究命題。

The industrialized manufacturing of this product plays an important role in grain crops drought - fight and abundant harvest ensuring in arid and semiarid region , drought - fight and yield increasing of fruits and vegetables , fresh keeping of flowers , municipal gardening , forest drought - fight , drought degeneration reduction of pasture ecology , and desert vegetation protection , etc 該產品的產業化生產,對干旱、半干旱地區糧食作物抗旱保豐收、果樹蔬菜抗旱增產、鮮花花卉保鮮、城市園藝綠化、林樹抗旱、減少牧草生態因旱退化、沙漠植被保護等方面有著重要應用。

Apart from geochemists from western countries , which paid a particular attention on amorphous iron - manganese oxides extracted by enzyme or 0 . 1 ~ 0 . 25m nh2oh ? hc1 , our results show that the extraction of metals adsorbed by clay and bound to the carbonate in soil is most useful to identify the concealed mineralizations in the semiarid and loess covered terrains , northern china 但與國外重點關注非晶質鐵錳氧化物如酶、鹽酸羥氨提取結果不同,在我國北方半干旱黃土覆蓋景觀區,粘土吸附和碳酸鹽結合態金屬元素的提取為最有效的提取步驟。而游離態、有機結合態的提取效果則受景觀控制變化較大。

For the purpose of open out the complex relationship that influence the increase of wue and wse . and take it to instruct production practices to adopt scientific skills to regulate and control the use of rainwater and to complete high effective water use , the paper has put f orward and divided the high etfective rainwater use models of catchment agriculture in semiarid area into three models 1以提高自然降水利用效率( wateruseefficiency , wue )和有限供水的供水效率( watersupplyefficiency , wse ) ,揭示影響wue和wse的復雜關系,指導生產實踐采用科學的調控利用技術,實現高效用水為目的。

To overcome the restriction of water and heat on agricultural production in northwestern arid and semiarid region , the farming practice of clear plastic film mulch was spread due to its capacity of retaining water and temperature in the winter wheat field in many areas , howeve r soil properties had also were affected significantly in the meantime 在西北干旱半干旱地區,為了克服水熱資源對農業生產的限制,地膜覆蓋的農作措施以其顯著的增溫保墑作用在冬小麥農田得到了大面積的推廣和應用;與此同時,該農作措施下的土壤性質也發生了深刻的變化。

In the weihe valley , the environmental effect of the summer monsoon on the south is much stronger than that on the north in the holocene megathermal , which is result forming deferent structure of paleosoil ( so ) at the mjy - a site and the wsc site : at the mjy - a she , the paleosoil ( so ) belongs to typical semiarid grasslands soil - heilu soil with apb - ah - bk - c soil sectional structure ; at the mjy - a site , the paleosoil ( so ) belongs to typical semi7humid forest soil - brown soil with ah - b1 - ck - c soil sectional structure 具體表現在合水與戶縣大暖期強成壤階段形成的古土壤( s 。 )剖面構型上:北部古土壤為典型的半干旱草原土壤一黑爐土,具有apb叭hek (土壤剖面構型:南部戶縣剖面古土壤( s 。 )為典型的半濕潤森林土壤一褐土,其so具有ah bt ck c土壤會面構型。

Therefore , metals moving upwards from mineralizations may be absorbed and form weak geochemical anomalies ( weak signals ) in surface loess . the metals can be effectively extracted by neutral salt . loess - covered area in china is primarily distributed at the semiarid region , the secondary carbonates , which were formed after precipitation of ions through evaporation and capillary processes , are widespread in the surface soil 黃土覆蓋區主要分布在干旱半干旱地區,次生碳酸鹽在地表土壤中普遍存在,蒸發所產生的毛細作用、地氣流的上升作用等所帶入的各種形式金屬元素,在地表土壤(黃土)與碳酸鹽發生共沉淀或被吸持。

The model is adapted to be used in semiarid regions . this article presents wudaogou test site to carry on modeling simulations . based on the results of “ four waters “ conversion at wudaogou test station , groundwater evaporation and infiltration have been evaluated furthermore 本文選取五道溝實驗區進行模型驗證,并在五道溝實驗站“四水”轉化關系研究成果的基礎上,對潛水蒸發和入滲補給作了進一步的分析研究。

The shortage of water and its impact on sustainable development has drawn wide and great attention around the world . hexi region in gansu province as aridity and semiarid rejoin , the shortage of water and environment problems are very serious 全球范圍內水資源短缺及其對可持續發展的影響,已引起社會各界的廣泛關注,甘肅河西地區屬西北干旱區的內陸河流域,這一問題顯得突出而典型。

Therefore , it is important to accelerate economic construction , and to maintain ecological balance , and sustainable development of arid , and semiarid areas in order to use and impolder groundwater resources in reason and phase 因此,合理、協調地開發和利用地下水,找出地下水位監測的省錢、省力方法,對干旱、半干旱地區的生態平衡、經濟建設、農業發展的影響重大。

Soil caco3 eluviation and deposition process is the most important development and evolution process of soil , from parent material to mature soil in the loess plateau , arid and semiarid area 土壤碳酸鈣( caco _ 3 )的淋溶淀積過程是黃土高原以及干旱和半干旱地區土壤形成發育的主要過程之一,也是地球化學過程的主要內容。

World environment day 2006 wed 2006 takes place on 5 june . this year s theme , don t desert drylands , highlights the importance of caring for the world s vast areas of arid and semiarid land 2006年“世界環境日” ( wed 2006 )的主題是“莫使旱地變荒漠” ,突出強調保護世界大面積的干旱和半干旱土地的重要性。

Based on the comparison and analysis of the difference of water resources between israel and the semiarid region in china , it was concluded that the water - saving agriculture should be adopted in china 對比分析了中國半干旱地區與以色列的水資源條件,得出中國必須走節水農業之路。

Hang dry in a cool ventilated place , do not force crowded ning , up until the time semiarid , further stretching shoot - integer , dry iron screed can be used after 掛晾在陰涼通風處,不要用力擠檸,待到半干時,再進行整型拉伸拍平,干后用熨斗熨平即可。

During the development and deposition about the fouth member of shahejie formation , bonan sag is under the condition of arid to semiarid climate 沙四上段發育時期,渤南洼陷處于干旱?半干旱氣候條件下,表現為東北陡、西南緩的箕狀洼陷。