荒漠土 的英文怎麼說
中文拼音 [huāngmòtǔ]
荒漠土
英文
desert soil-
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。Do you know how much arable land has been desolated
你知道什麼每年有多少土地荒漠化嗎？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。Effects of mulching on grapery soil in arid desert area
乾旱荒漠區不同覆蓋對釀酒葡萄園土壤的綜合效應研究There is great desertification in the east of hainan island of china due to over - mining of ilmenites
摘要多年來，由於對鈦礦的無序開采，使得海南島東部出現大面積的土地荒漠化。This paper summarized the disturbance effect of rodents on soil ( pedogenesis, patch formation, and physical and chemical properties ) and vegetation ( species diversity, productivity, and seed dispersion ), aimed to illustrate the contributions of rodents activities to desert ecosystem
本文主要從鼠類活動對土壤（包括土壤發生過程、土壤斑塊的形成、土壤理化性質）和植物群落（包括物種多樣性、生產力、植物種子）的擾動效應做了歸納總結，旨在闡明鼠類在荒漠生態系統中的作用。6 diversity fragmentation and evenness of ecological landscape in fukang increase with more utilization and development. the change of landscape pattern about land utilization is mainly area variation of plantation and wasteland in pluvial fan and alluvial plain, the key influence factors are the dynamic of soil moisture and salinity under the development of water and land resource
6 、在阜康各景觀帶中，隨人為開發利用程度的增強，景觀多樣性、破碎度和均勻性增加；荒漠綠洲土地利用景觀生態格局的變化，集中體現在位於洪積扇與沖積平原的耕地和荒地面積變動上，關鍵影響因子是水土資源利用下的土壤水鹽動態變化。Reasonless economic activities of human beings, such as over - reclamation, overgrazing, denudation, misuse and gouging, trigger and accelerate land desertification, which are only the exterior causes of land desertification
摘要人類不合理的經濟活動，如濫墾、濫牧、濫采、濫伐、濫用等觸發並加速了土地荒漠化的進程，但這只是制約土地荒漠化的外在機制。The two tremendous continental countries shared a frontier of 4, 000 miles in a vast arc from the frozen tundras of siberia to the stark deserts of central asia.
這兩個遼闊的大陸國家的共同邊界從西伯利亞凍土地帶到中亞細亞荒漠劃出一個大弧形，長達四千多英里。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。And climatic variation is a main factor affecting desertification. the sustained period of water deficit is a direct cause of desertification in arid and semi - arid areas. the tectonic activities of lithosphere control the distribution of desertification by constructing geomorphology
提出了自然作用在土地荒漠化演化中佔主導地位，其中，氣候變化是控制土地荒漠化進退的首要因素，地表水持續虧損則是導致乾旱、半乾旱地區土地荒漠化發展的直接原因。Fuzzy synthetical assessment of land desertification in debris activity region
泥石流多發區土地荒漠化程度模糊綜合評判研究Desertification of land has been a serious problem of global ecological environment and threatened the living environment and sustainable development of human being socienty
土地荒漠化是當前全球生態環境中的一個嚴重問題，危及到人類社會的生存環境和可持續發展。Brown desert steppe soil
棕色荒漠草原土Grey desert steppe soil
灰色荒漠草原土Effects of grazing on soil microorganisms and their seasonal changes in desert steppe
放牧對荒漠草原土壤微生物的影響及其季節動態研究Management of soil moisture for desert steppe vegetation rehabilitation in western loess plateau
黃土高原西部荒漠草原植被恢復的土壤水分管理研究According to the configuration and ecotope of the earths surface, the coverage of vegetation, occupation ratio of bare sandy land and the soil texture were selected as evaluation indexes by using the field investigation data
利用外業調查數據，依據地表形態和生態狀況的變化，確定了植被蓋度、裸沙地佔地百分比和土壤質地3項評價指標，並建立了基於遙感的科爾沁沙質荒漠化評價指標體系，其中裸沙地佔地百分比用混合像元分解的方法獲得。Grey - brown desert soil
灰棕色荒漠土分享友人