desertification of land 中文意思是什麼

desertification of land 解釋
土地沙化
  • desertification : 地球沙漠化
  • of : OF ＝Old French 古法語。
  • 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...
  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 desertification of land by the current world - wide attention

    留學解答資訊網:土地的沙漠化得到了當今世界廣范圍的重視。
  7. However the number is still increasing with the desertification of land and the lack of fresh water

    隨著土地沙漠化的加劇，以及淡水資源的日益短缺，這一數字還在不斷上升。
  8. 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。
  9. The environmental geological problems existing in the west liaohe plain involve desertification of land, salinization of soil, declining of groundwater level and pollution of groundwater

    摘要西遼河平原的環境地質問題主要表現為土地沙漠化、土壤鹽漬化、區域地下水位元下降及地下水污染等。
  10. Analyzing the sandstorm, the experts and scholars in our country have recognized that, the main reason of sandstorm happens is the increasing expansion of desertification land and the primary sector forming desertification of land is the soil wind erosion

    專家學者研究沙塵暴發生的原因認為，我國沙漠化土地面積日益擴大是沙塵暴發生的重要因素，而土地沙漠化的首要環節是土壤風蝕。
  11. Finally, the surface sands of the hsl are coarser at the present day than the past and the desertification of the land is currently rather rigorous

    5 ，渾善達克沙地的沙漠化發展形勢嚴峻，目前有加速惡化的趨勢，表現為地表土壤嚴重粗粒化。
  12. 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。
  13. 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。
  14. Employing the satellite images of landsat - mss and landsat - tm and the integrated techniques of rs, gis, and gps, the authors, with maotiaohe river basin as a case, studied the process and driving factors of land use / cover changes since the beginning of 1970s, and modeled the possible land use / cover changes scenarios in the coming 10 years based on clue - s model, and then made an ecological evaluation on effect of the changes over the past 30 yeas as well as in the coming 10 years by using theory and method of landscape ecology. in this research, the authors, from the angle of international lucc studies, threw much light on the land use / cover changes in the basin and also the derived ecological and environmental problems such as karst rocky desertification

    本文以位於貴州中部的貓跳河喀斯特流域為對象，以1973年的mss和1990年、 2002年的tm等衛星影像為數據源，運用rs - gis - gps集成技術，研究了該地區在過去三十年間土地利用/覆被變化的過程、驅動機制，運用clue - s模型模擬、預測了該流域在不同目標情景模式下的土地利用/覆被變化，並運用景觀生態學的方法對貓跳河流域過去三十年間的土地利用/覆被變化以及未來不同情景模式下的土地利用/覆被變化的生態效應進行了評價。
  15. The evaluation of land sandy desertification degree in hexi region

    河西地區土地荒漠化程度評價
  16. The effective methods to combat desertification are monitoring the change of land with remote sensing, licensing the rights of mining ilmenites rationally, and organizing the moderate reclaim

    採用遙感的手段進行跟蹤監測，合理地授予采礦權，組織適當的復墾，是解決當地荒漠化的有效途徑。
  17. 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。
  18. In order to maintain the sustainable use of land and water resource, to protect the land from desertification and to make longyangxia reservoir safe, firstly, the spatially disturbed model has been established in which includes dem - based precipitation and runoff, regional transpiration and regional water balance modules in gonghe. secondly, the model of grassland climate potential productivity and the model of grassland productivity modified by plant water demand and stocking intensity factors has been constructed in gonghe. according to the carrying capacity and the actual amount of animals on the grassland, coupled with actual grassland investigation, and by using social - economic data, the grassland productivity, species composition, biotope and the cause of desertification has been analyzed

    為了做到對本區的水土資源的可持續利用、防治本區的荒漠化和保護龍羊峽水庫，所以基於dem和已有的氣象、水文長短期觀測和實測數據，首先構建了青海共和盆地降雨、徑流、蒸散和區域水分平衡的分散式模型；進一步在此基礎上，構建了青海共和盆地草地生產力的模型和基於作物水分耗散與放牧因子校正的青海共和盆地草地生產力模型；利用草地載畜能力和現有牲畜量以及社會經濟因子等統計數據，結合實地調查，分析了青海共和盆地草地生產力、物種構成、生境變化和荒漠化成因及其內在驅動因子，並對草地可持續利用做了評價。
  19. From tang dynasty to ming and qing periods, the desertification of the land turned to stronger and stronger, and there were different expand modes toward the southeast in different districts, such as spreads with sheet sand, expands with sand tongues, spreads along the river valley and expands with the wide zonal sand tongue

    唐代以至明清時期，長城沿線毛烏素沙地土地沙化有愈演愈烈之勢，並在不同地段，分別以片沙蔓延、沙舌擴展、河谷沙化及寬帶沙舌等形式向東南方向擴展。
  20. 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
分享友人
分享到 Line

分享到臉書