荒漠之地 的英文怎麼說
中文拼音 [huāngmòzhīde]
荒漠之地
英文
the barrens-
And understanding and studying the spectral features and variation rules of geo - targets in the experimental area, raising that it is the basis of geo - targets information collection with imaging spectrometer data to understand spectral features and variation rules of geo - targets, realizing that in a great extent spectral - integrated - form - based classification method can remove the phenomenon of " different spectrum with same objects " resulted from reflection ratio curve translation because of the angle change among sensor, targets and observation direction, and the average and variance images can be introduced to solve the problem of two kinds of geo - target with similar spectral forms and much different values of whole reflection ratio. it is suggested that " red edge " range bands of vegetation, which has close relationship with vegetation cover and biomass, is the main characteristic bands and important basis for careful vegetation classification and quantitative retrieval, and pixel - based derivative spectral analysis is very useful for removing the effects of soil background values and quantitatively retrieving vegetation biomass and cover. the remote sense quantitative retrieval model is developed for main appraisable factors of desertification monitoring assessment with imaging spectrometer data and then the applicability of model is analyzed
研究結果如下:首先針對荒漠化地區的地物特徵,對高光譜數據不同波段的數據質量、波段組合進行了評價,提出了適用於荒漠化監測的基本波段選擇集;初步了解和掌握了研究地區的地物光譜特性及變異規律,進一步明確了掌握地物光譜特徵和變異規律是用成像光譜儀數據提取地物信息的基礎;發現了基於光譜整體形狀的分類方法在很大程度上能夠消除由於傳感器、地物目標觀測方向之間的角度變化引起的反射率曲線整體平移的「同物異譜」現象,對于譜形相似而整體反射率的值相差較大的兩類地物,通過引入均值和方差圖像參與分類得到解決;研究還表明在植被「紅邊」范圍內的波段是進行荒漠化監測的主要特徵波段,這些波段與植被生物量和蓋度都有密切的關系,是開展精細植被分類研究和植被定量反演的重要基礎;像元的導數光譜分析可以消除土壤背景的影響,是進行植被生物量和蓋度定量反演的有力工具;建立了荒漠化監測主要評價因子的定量反演模型,並分析了模型的適用性。Based on field research and the dynamic analysis of remote sensing data of different time ( 1987 tm, 1996 tm and 2000 china - brazil earth resource satellite ccd ), using multi - information of research area ( including data of geology, geography, hydrology, meteorology, economy, human culture and dem ) and existing research results, the dissertation discusses drive factors of desertification and the relationships between drive factors and desertification with the help of gis tool and some mathematical methods such as probability, statistics, curvilinear estimation, logical analysis and analytic hierarchy process
論文在對研究區土地荒漠化現狀野外調研和不同時相( 1987tm 、 1996tm和2000ccd )遙感圖像土地荒漠化信息提取和演變分析的基礎上,結合研究區已有的多元信息基礎資料及研究成果(包括地質、地理、多時期的水文氣象、經濟、人文以及dem數據等) ,運用gis強大的空間分析功能和概率統計、曲線估計、邏輯分析、主成分分析、層次分析等數學方法綜合研究了土地荒漠化與各驅動因子之間的相關關系,揭示了研究區土地荒漠化的主要驅動因素,探討了荒漠化動態演化規律。In addition to the development of hungriness, the water environment has been destroyed greatly in west china. shortage of water resources, water pollution and depravation of water environment have become the bottle - neck which restricts the development of west china
加之荒漠化的不斷發展,中國西部水環境已受到嚴重破壞,水資源短缺、水污染、水環境惡化已成為嚴重製約廣大西部地區經濟發展的瓶頸。The sahel is the area of africa that lies between the sahara desert to the north and more fertile land to the south. the dry plains of the sahel are mostly treeless. yet in niger, one of the nation along the sahel, millions of trees are now growing. researchers have been studying the progress of a re - greening campaign in niger
荒漠平原是在非洲的一個地方,它在撒哈拉沙漠的北部和更多肥沃土地的南部之間.荒漠平原的乾旱的平原上是幾乎沒有樹的.然而,在尼日,一個靠近荒漠平原的國家之一,數以萬計的樹現在正在生長.研究人員已經在研究在尼日的一個重新種植樹木的戰役的進程The first geologic reason for degeneration of the eco - environment in the headwater area of the yellow river is that the increase of the recent geologic function caused desertification and grasslands resource decreased and underside changed, destroied the balance of water - air - heat in the area ; the second is that the water environment changes by the degradation and atrophy of frozen earth cause multilayer and synthesis cause of formation degeneration of the eco - environment ; the third is that the man and rats function accelerated degeneration of the eco - environment in the headwater area of the yellow river
摘要黃河源區生態環境惡化的地質原因之一是現代地質作用增強,形成以荒漠化為主的草地資源退化與下墊面改變,地區水氣熱平衡破壞;二是因凍土退化、萎縮,引起水環境變異,導致多層面與綜合成因的生態環境惡化;三是人為及鼠類活動對源區生態環境惡化起著推波助瀾的作用。Especially, river retreat in drying year becomes one of the main causes of desertification because of the decrease of runoff
尤其枯水年徑流量的減少可能成為影響盆地荒漠化的原因之一。The two eco - systems can invert each other in some conditions. the ecotone between oasis and desert is the most prominent area to these activities. it records the most sensitive and intact information on the transition belt
而荒漠與綠洲之間的植被帶即過渡帶則最為敏感、完整地記錄了這兩大生態系統之間的相互作用與相互轉化。The sahel is the area of africa that lies between the sahara desert to the north and more fertile land to the south
荒漠草原是在撒哈拉沙漠和北方及南富饒之地的非洲地域。There are many achievements in the lab, but they cannot be carried out in the fields. the ability to meet the great demand of large quantity and low price is out of expecting
植物非試管高效快繁技術ternpc無論在西北的沙漠荒地,東北的黑土地,華南的紅土地,還是華北華中大地均已燃起了大面積推廣的燎原之火。In such condition the ideal productivity could not became true let alone industrialization. conventional methods such as cuttage, graft, layer, have been used for nearly 2000 years by the most people. they are simple and easily spread, but with low propagating speed
植物非試管高效快繁技術( ternpc )無論在西北的沙漠荒地,東北的黑土地,華南的紅土地,還是華北華中大地均已燃起了大面積推廣的燎原之火。Desertification is one of the most serious environment and social economic problem nowadays in the world
土地荒漠化是當今全球最嚴重的環境與社會經濟問題之一。Species diversity dominance niche community ordination and classificationx population spatial pattern in desert - oasis ecotone in fukang, along with their relation to soil factors, are analyzed by quantitative vegetation analyze methods. the characteristic x dynamic of landscape ecological pattern and their influence factors are also analyzed by the partition of landscape transect. oasis stability is primary explored by the successive observation of soil water and salt in sangonghe basin in fukang
採用植被數量分析方法,分析了荒漠綠洲過渡帶植物群落的物種多樣性、優勢種生態位、群落排序與分類、種群空間格局,以及它們與土壤因子之間的關系;通過劃分景觀樣帶,分析了阜康土地利用景觀生態格局的特徵、動態及其影響因子;通過阜康三工河流域土壤水鹽的動態觀測,對于綠洲穩定性進行了初步探索。It ' s significant to further the study of the environment evolvement and forming mechanism, and this helps to open out its ecological essential, protect and develop the oasis, lacated in the cross belt which converge northeaster and northwester, yutian oasis was threatened by the ilowing sand, and has the bad nature conditions the main purpose of the paper is applying fractal theory to research on the change of transitional belt between oasis and desert, which is a typical ecosystem in arid zone
而荒漠與綠洲之間的植被帶即過渡帶則最為敏感、完整地記錄了這兩大生態系統之間的相互作用與相互轉化,深入研究這一特殊地帶的環境演變過程、特徵及形成機制對于揭示其生態學實質、維護和發展綠洲具有重要的實踐意義。於田綠洲位於東北風與西北風的交匯地帶,受到流沙侵蝕的危害很嚴重,自然條件非常惡劣,生態環境異常脆弱,人民的生存環境受到了很大的威脅。Hence, to describe spatial characteristics of oasis landscape quantificationally and discuss the relation between the oasis landscape structure and human activity is most significant for more knowledge of the relationship between landscape structure, natural ecologic process and social economic activities, and for reasonable use of oasis land resources, oasis landscape ecology planning, desertification controlling and oasis environment evaluation, and so on
因此,定量的描述綠洲景觀的空間特性,探討綠洲景觀結構與人類活動的關系,以便進一步了解景觀結構與自然生態過程和社會經濟活動之間的關系,以及對綠洲土地資源的合理利用、綠洲景觀生態設計和荒漠化的控制以及綠洲生態環境評價等提供科學依據。The kalahari desert covers about three - quarters of the western part of the country, characterised by heavy sands to the golden - sand dunes, with shrubs, acacia, open grasslands and horizonless landscapes. ideal for those in love with the wilderness experience
卡拉哈里沙漠覆蓋了波札那西部約四分之三的面積,從茫茫荒漠到金色的沙丘,間或有灌木、刺槐,廣闊的草原一望無際,是熱愛野外風光的人們的理想之地。Her towns will be desolate, a dry and desert land, a land where no one lives, through which no man travels
43她的城邑變為荒場,旱地,沙漠,無人居住,無人經過之地。There is much correlation between the mining land and severe grassland desertification area, and the mining land area can be served as an important indicator for coalfield eco - environment assessment and prediction
礦業建設用地面積與重度荒漠化面積相關關系顯著,可將其作為評價、預測該區煤炭開發對生態環境影響的重要依據之一。Pillars of frankincense ' s white smoke, accompanying the bride as she exits the wilderness, represent the pillar of smoke which led the israelites to the promised land, the sweet savor of christ, the praises and graces of the christian church, and the holy spirit accompanying christ as he returns from his testing in the desert
乳香發出柱狀的白煙,伴隨著新娘正在消失於荒野中,代表著煙柱引領以色列人去上帝允許給亞伯拉罕的地方(樂土,福地,希望之鄉) ,救世主基督的芬香氣味,基督教會的贊美與優雅,基督在試驗的沙漠回來的時候,聖靈陪同著基督。分享友人