land desertification 中文意思是什麼

land desertification 解釋
土地荒漠化
  • land : n 1 陸地，地面。2 土地，田地；農田；〈pl 〉所有地，地產。3 國土，國，國家；領土；地方；（…的）世...
  • desertification : 地球沙漠化
  1. 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。
  2. 4. the driving cause of the formation and change of land desertification in keerqin sandlot is analyzed from the nature and society aspects based on field investigation and former research

    本研究在野外調查和總結前人研究成果的基礎上，從自然條件和社會因素兩個方面總結分析了科爾沁地區土地沙漠化形成和變化的動因。
  3. The paper is mainly based on geography, ecology, sight ecology, region location theory and system theory. by interpreting the mss remote sensing image of 1970s and the tm remote sensing image of 1980s and the end of 1990s in keerqin sandlot based on background database and expert information, we have achieved the three periods vector data of land desertification of the research area, then we have disposed the data property by using the powerful spatial analysis function of arc / info and achieved the information extraction and analysis supported by arcview and erdas imagine. thus the rule of temporal and spatial variation of land desertification in keerqin sandlot is researched and the blueprint and countermeasures of the prevention and treatment of land desertification in keerqin sandlot are put forward

    本研究主要以地理學、生態學、景觀生態學、區位論和系統論為主要理論支持，通過對科爾沁地區20世紀70年代的mss遙感影像、 20世紀80年代和90年代末tm遙感影像進行基於背景數據庫和專家知識的解譯，獲得科爾沁研究區土地沙漠化的三期矢量數據，利用arc / info軟體強大的空間分析功能對屬性進行處理，並在arcview 、 erdasimagine軟體的支持下進行信息提取與分析，研究了科爾沁沙地土地沙漠化時空變化的規律，提出了科爾沁沙地土地沙漠化防治的構想與對策。
  4. The overall temporal variation characteristics of land desertification in the recent 30 years in keerqin sandlot are that : the main types of land desertification are changed from medium and severest desertification types to gently and medium desertification types. the area of gently desertification land is increasing. the area of severe desertification is decreasing

    研究表明： 30年來，科爾沁沙地土地沙漠化的時間變化總特點是：土地沙漠化的類型中度、極重度為主轉變為以輕度、中度為主，輕度沙漠化土地的面積呈增加趨勢，重度沙漠化土地的面積減少趨勢。
  5. 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
  6. The field of taiyangmiao nuresry of trees and grass is an important ecology protecting area in inner monogolia. all of projects in the field, including the water and soil conservation trees, the windbreat of returning farmland to treeland and grassland, are playing a very important role in preventing and decreasing vegetation deterioration, land desertification and sandstorm weather

    星月太陽廟林木種苗培育基地和農業種植基地是內蒙古重要的生態功能保護區，基地內的水土保持林、防風固沙林、速生豐產林、退耕還林還草等林草工程，對防止植被退化、土地沙化、減緩沙塵天氣的發生起到不可忽視的作用。
  7. Yellow river region, because forest vegetation is destroyed by men, it causes serious soil erosion, land desertification, finally result in blocking in river course and floods, even may become a barren land

    都是因為森林植被受到人為的破壞，造成嚴重的水土流失土地沙漠化，最終導致河道淤塞河水泛濫，甚至成為不毛之地的。土地是人類生存的基地，土地沙漠化，是當今世界嚴重的環境問題。
  8. There must be intrinsic mechanism of land desertification behind these activities

    在這些破壞行為背後，存在著更深層次、更具決定性作用的荒漠化內在機制。
  9. 1. in this paper, the background database of geography data, social economic data, midway data during the research course, and the research results database are established, which are needed for the land desertification research. the desertification land is classified as latency desertification land, gently desertification land, medium desertification, severe desertification land and the in severest desertification land

    本研究建立了存儲土地沙漠化研究所必須的地理背景材料、社會經濟數據、研究過程中的中間數據以及研究結果等的背景數據庫，並將沙漠化土地劃分為潛在沙漠化土地、輕度沙漠化土地、中度沙漠化土地、重度沙漠化土地、極重度沙漠化土地四個等級。
  10. Land desertification is one of the most important problems about the issue of environment, social and economy in the world

    土地沙漠化是當今世界所面臨的重大的環境?社會經濟問題之一。
  11. The main technical module of processing gis spatial information of land desertification is designed, which can carry out the spatial overlay of vector data in three periods, extract as well as process attributative information and transform the spatial vector data into visualizing data. the gis database of land desertification is established

    本研究設計了土地沙漠化gis空間信息處理的主要技術模塊，即三期矢量數據的空間疊加、屬性的信息提取與處理、空間矢量數據向可視化數據庫的轉化，建立了土地沙漠化gis數據庫。
  12. Obtaining full and accurate information on the spot, basing on the fractal theory, fully using remote sensing image as the main research data and relative thematic map as reference data, aiding of pci which is a powerful image processing software of remote sensing technique, the land desertification and the change of transitional belt between oasis and desert in yutian county are analyzed quantificationally. the rational proposals are tabled for the desert controlling and area rebuilding in the future, furthermore, this paper deeply discusses and validates the effect of fractal approach applied in the desertification research

    在實地考察研究區獲得翔實資料的基礎上，以分形為理論依據，充分利用多時相衛星遙感數字圖像為主要資料源，參考相關資料，藉助遙感圖像處理分析軟體pci操作平臺，定量分析評價於田縣的沙漠化狀況及綠洲?荒漠交錯帶的演變趨勢，為今後沙漠化的控制、改造工作提出合理化建議，並對分形理論在綠洲?荒漠交錯帶定量研究中的作用作深入地探討和驗證。
  13. It is put forward that the stands for selecting the project lands should be slope, desertification degree and rainfall, and the control of soil erosion and the prevention of land desertification should be the dual objects of the project

    提出武川縣的退耕還林工程地域選擇指標為坡度、沙化程度和降雨量，將水土流失治理和土地荒漠化的防治作為退耕還林工程的雙重目標。
  14. To reach the aim of reflecting entirely the degree of the effect, the general aim is decomposed with six aspects, which are water resource carrying capacity effect, surface water resource effect, groundwater resource effect, oasis and vegetation effect, soil salinification effect and land desertification effect

    為了達到全面反映水資源開發引起的水土環境效應程度的目的，將總目標分解為水資源承載效應、地表水效應、地下水效應、綠洲及植被效應、土壤鹽漬化效應和土地沙漠化效應等6方面來進行描述。
  15. Current status and causes of land desertification in middle and lower reaches of heihe river basin

    黑河流域中下游地區土地沙漠化現狀及其原因分析
  16. The overall temporal and spatial variation trends in the recent 30 years are that : the total area of desertification land is increasing. the reverse trend of land desertification is greater than the evaluative trend. the proportion of gently reversion and distinctively reversion is equivalent

    30年來，科爾沁沙地土地沙漠化的時空變化總體趨勢是：沙漠化土地的總面積呈增加趨勢；研究區土地沙漠化逆轉的趨勢大於發展的趨勢，輕度逆轉和明顯逆轉的比例相當；土地沙漠化的程度加重。
  17. Land desertification impact from jinghe - yili - huoerguosi railway construction

    精伊霍鐵路工程建設的土壤侵蝕評價
  18. The research history retrospection and prospect of land desertification problem

    荒漠化問題研究的歷史回顧與前瞻
  19. Henan land desertification dynamic change and discussion of control measures

    河南荒漠化土地動態變化及治理對策探討
  20. Analysis of current situation and trend of land desertification in coal mine area of shanxi province

    山西採煤造成的土地荒漠化及趨勢分析
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