degradation of soil 中文意思是什麼

degradation of soil 解釋
土壤退化
  • degradation : n. 1. 降級；免職。2. 退化；墮落。3. 【地質學；地理學】（地表的）剝蝕。4. 【化學】降解，遞降分解（作用）。5. 【物理學】（能的）退降。
  • of : OF ＝Old French 古法語。
  • soil : n 1 泥土，土壤；土質。2 土地，國土。3 滋生地，溫床。4 農業生活，務農。n 1 臟東西，污物，污穢，污...
  1. After analyzing purple soil sampled from neijiang, leshan ofsichuan provinec and yuanmou of yunnan province, the contrast results of microbe quantity feature between surface and subsurface purple soil were obtained as follows. the content of soil organic matter, total and available nitrogen, phosphorous and potassium of surface was higher than subsurface, not relating to the type of purple soil and soil utilization way. the quantity of microbe _ bacteria, actinomyces and mould in surface purple soil was higher than subsurface, which indicated that the organic matter and airy condition in surface soil was more suitable for microbes growing. there was the same tendency in profile change of microbe quantity in purple soil located in temperate _ humid climate of sichuan basin in contrast with dry _ hot climate of yuanmou, yunnan. the nutrient situation of purple soil in sichuan basin shown that state of surface was better than subsurface, while in yuanmou of yunnan the state was on the contrary due to the degradation of surface soil

    實驗室對四川內江、樂山和雲南元謀不同類型紫色土表層和亞表層微生物數量特性的比較分析表明：土壤有機質、氮磷鉀全量及其速效量均表現為表層高於亞表層，與紫色土類型和利用方式無關；三大類土壤微生物細菌、放線菌和黴菌數量均表現出表層高於亞表層，表明紫色土表層的有機質和通氣性優于亞表層，適宜於這三大類微生物生長；溫濕氣候條件下的四川盆地和乾熱氣候條件下的雲南元謀其紫色土微生物數量的剖面變化具有相同的趨勢，唯土壤營養狀況在四川盆地紫色土中表現為表層優于亞表層，而在雲南元謀紫色土中由於表層土壤的退化作用表現為亞表層優于表層的相反情況。
  2. The results showed in the paddy field the bacteria were predominated, in the dry land the proportion of fungi and actinomyces was distinctly higher than the other two kinds of soil, in the woodland abundant species of basidiomycetes were found ; the natural degradation speed was low, with the degradation the number and composition of microorganisms changed regularly ; when the c / n ratio was adjusted to 25 " ? 1, the degradation remnant ratio reduced 10. 67 % than the control

    結果表明，水田以細菌為主，旱地中真菌和放線菌數量最多，林地中有大量的高等擔子菌；秸稈自然降解較慢，土壤微生物也隨著降解的進行而呈現一定的變化規律；當調節c / n比為25 ： 1時，秸稈的腐解殘留率比對照組下降10 . 67 。 2
  3. The pathway of ddt degradation in soil has not been fully ascertained.

    在土壤中滴滴涕降解的途徑還沒有充分調查。
  4. On the basis of the government ' s policy of revitalizing the northeast old industrial base, preventing black earth from degeneration and strengthening protection of black soil in china, according to analysis of the distribution of black soil and the present research of black earth degeneration, the author summarized the main degradation type of black earth, revealed main reasons for its degradation, put forward some measures to prevent black earth from degrading and protecting black earth in addition, the author put forward the new and further direction to study the degradation of black earth on the basis of the existing study, and hope to play a role of inducing purpose in assuring sustainable utilization of black earth resource and furthering study

    在國家振興東北老工業基地和防止黑土退化及加強黑土保護之際，通過對黑土分佈狀況和黑土退化研究現狀的分析，總結出黑土退化方式，揭示了其退化的主要原因，提出了防止黑土地退化和保護黑土地的措施，在現有研究的基礎上提出黑土退化研究的新方向，希望能為黑土資源可持續利用和進一步研究起到拋磚引玉的作用。
  5. Through monitoring the growth of wetland plants mainly common reed and cattails and assaying o g and tph in soils according to timelapse, the function of wetland degrading oil pollution was validated. the petroleum pollutants in the surface layer of soil were decreased by eluviations and degradation

    通過監測濕地植物蘆葦香蒲等的長勢和化驗土壤中總石油烴tph及油和脂o g隨時間的變化，以探討濕地狀態對石油污染和植物長勢的影響。
  6. Through monitoring the growth of wetland plants mainly common reed and cattails and assaying o g and tph in soils according to time ? ? lapse, the function of wetland degrading oil pollution was validated. the petroleum pollutants in the surface layer of soil were decreased by eluviations and degradation

    通過監測濕地植物蘆葦香蒲等的長勢和化驗土壤中總石油烴tph及油和脂o g隨時間的變化，以探討濕地狀態對石油污染和植物長勢的影響。
  7. Along with development of mining in this region, abnormity of heavy - metal endogenetic geochemistry change to heavy - metal inchoative geochemistry, which lead to accumulation and diffusion of heavy metal in mine region of red soil and great red soil area, serious degradation of soil caused by heavy metal pollution, and mine ecological system destroy

    隨著有色金屬采礦業的發展，重金屬的內生地球化學異常轉化向表生地球化學異常。由此，使紅壤礦區土壤乃至大面積紅壤中重金屬積累擴散，造成土壤重金屬污染退化加劇，生態系統遭受嚴重破壞。
  8. Dynamic of degradation of lindane and its residual in soil

    林丹在土壤中的殘留動態研究
  9. The study of soil degradation has become the focus of the 21st century inter - national pedology, agronomy, hydrology, environmental science and soil erosion science, however, a lot of theoretical problems and course mechanism about soil degradation are uncertain hitherto

    土壤退化研究已成為21世紀國際土壤學、農學、水文學、環境科學及侵蝕學科關注的熱點，但是直到今天為止有關土壤退化的許多理論問題及過程機理尚不清楚。
  10. As to the soil basic respiration, the release amounts of co2 decreased, all of which may le d to the degradation of microbes activity in minesoils. relations were analyzed between plants and soils

    Biolog結果顯示，紅壤銅礦區復墾土壤微生物的群落結構也發生改變，隨礦區土壤污染加劇，微生物對能源碳的消耗量和速度明顯升高，但利用效率卻降低。
  11. The research of soil degradation in pur country is mainly concentrated on the red earth hilly area in the south in the past, and is less on the loess plateau that is one of the most fragile areas. based on field experiment and laboratory analysis, discuses the degradation mechanism, and raises the methods of refreshing and reestablishing land productivity of huangshan soil in chunhua county of shaanxi. in the hope of serving development of western regions and ecological environment construction that concede the land to forestry ( the grass )

    我國以前對土壤退化問題的研究主要集中於南方紅壤丘陵區，對生態環境最脆弱的黃土高原地區的土壤退化研究相對較少，故本文以黃土高原地區陜西淳化縣的侵蝕性黃?土為對象，通過野外人工模擬降雨試驗和室內分析相結合的方法，探討了侵蝕性黃?土的退化機理，提出了恢復和重建黃?土土地生產力的途徑和方法，以期服務于西部大開發和退耕還林（草）的生態環境建設。
  12. The research results mainly show : ( 1 ) the ecological degradation characteristics of wuxi county include : some soil is thin and barren and its water and fertility conservation abilities are poor, gradual degradation of soil results in decrease of vegetation diversity and the vegetation community structure gradually inclines tc simplicity from complexity. the types of soil and water loss in wuxi county mainly involve surface erosion and gully erosion. according to investigation, surface erosion area occupies 80 % or so or erosion area, in which the slope farmlands surface erosion area accounts for about 70 % of farmland erosion area

    研究結果主要包括： （ 1 ）巫溪縣生態退化特徵表現：作為生物生長基質的部分土壤薄而貧瘠，保水保肥能力差，部分地區基巖裸露，土壤的不斷退化導致植物種多樣性減少，植物種群結構逐步由復雜趨向簡單化；縣內水土流失的類型主要包括面蝕和溝蝕兩大類，據調查，面蝕面積占侵蝕總面積的80左右，其中坡耕地面蝕佔耕地侵蝕面積的70左右。
  13. In light of the problems of aggravated soil erosion and litho - desertification of the karst regions in northwest guangxi as a result of degradation of forest ecosystems, six " grain - for - green " models ( five models of artificial afforestation or grass planting, and one model of desertation for natural vegetation restoration ) were screened out for quick restoration of vegetations in the regions and evaluated for their respective ecological effect

    摘要針對桂西北喀斯特地區森林生態系統退化造成的水土流失加劇以及石漠化嚴重的現狀，篩選適合該地區植被快速恢復的5種人工造林（草）方式和自然拋荒恢復模式，分析評價各種模式的生態效應。
  14. Fruit forest soil degradation of guanyang county, guangxi and its sustainable development

    廣西灌陽縣果林土壤退化與可持續發展
  15. The study has investigated and compared soil physical, chemical, biochemical properties of eight stands on paired sites in mountainous regions of northeastern china, trying to look for the mechanism of soil degradation and the change trend of soil properties in different age of plantations in relations to forest productivity. the eight stands are 4 first rotation of larix olgensis plantations with different age classes, the second rotation of larix olgensis young stand, pinus sylvestris var

    本文通過固定和典型樣地，對東北山地不同生長發育階段落葉松人工林和二代落葉松幼齡林以及與二代落葉松幼齡林同一塊林地的樟子松幼齡林、天然次生林、落葉松水曲柳混交林等8個林型土壤質量進行了對比與分析，深入探討了落葉松人工林土壤質量降低的機理和不同發育階段土壤質量變化規律以及與森林生產力變化的關系，並提出了林地土壤質量調控措施。
  16. The percentage of autumn degradation bacteria was the biggest, it was 0. 547 %. among degradation bacteria genus, the bacillus proportion in each season was the biggest, that was 44. 44 %, 50. 00 %, 48. 15 % and 47. 22 % in spring, summer, autumn and winter respectively, other bacteria genus ' s proportion were less than bacillus. this was probably related to the basic proterties of soil, the alternation of four seasons, the change of temprature and the difference of vegetation were fairly suitable to the growth of bacillus

    在土壤細菌總數上，夏季的細菌數量最多，其次分別為春、秋、冬各季；在土壤中降解氧樂果的細菌數量上，夏季土壤中的降解菌株數量也最多，其次分別為春、秋、冬各季，土壤磷的含量與降解氧樂果細菌的數量之間並沒有太大的相關性（ r = 0 . 494 ） ；在降解菌占細菌總數百分比上，秋季降解菌株所佔百分比最大，為0 . 547 % ；在降解菌株中，芽孢桿菌屬（ bacillus ）在每一季節所佔的比例都是最大的，春、夏、秋、冬分別為44 . 44 % 、 50 . 00 % 、 48 . 15 % 、 47 . 22 % ，其它菌屬所佔比例都比較少，這可能跟土壤的基本性狀有關，春夏秋冬四季的輪換，氣溫的變化，植被的差異，耕作的不同，比較適合抗逆性較強的芽孢桿菌屬（ bacillus ）的生長。
  17. Severe fires can often cause changes in successional rates and soil hydrologic functions, degradation of soil physical properties, alter c : n ratios, and result in subsequent nutrient loss through accelerated erosion, leaching or denitrification, and alterations in microbial populations and associated process can occur

    高強度火燒往往能引起演替頻率的改變，土壤物理性質退化，水文功能發生改變，改變c n比，加劇侵蝕、淋溶和反硝化作用，導致養分流火，微生物數量及其相關過程發生變化。
  18. Agricultural intensification plays an important role in stabilizing the food production in china, while bringing about an increasing negative impact on the soil and eco - environment as a result of the long - term highly - intensive land use and agricultural chemical overuse, thus leading to degradation of soil physical, chemical and biological properties, which are demonstrated as soil nutrient imbalance, soil acidification, pollutant accumulation, and biodiversity deterioration and posing serious stress and threat to the ecosystem per se and the environment

    摘要集約化農業對保障我國糧食安全發揮了巨大的作用，但其長期的土地高強度利用和農用化學品過量投入的負面影響也日益顯現，導致的以土壤養分失衡、土壤酸化、有害物質積累、生物多樣性衰退等為主要表現形式的土壤物理、化學和生物學退化，給生態系統本身與環境都帶來了巨大壓力和嚴重威脅。
  19. Meanwhile, the evaluation has changed from a single aspect su ch as vegetation and soil to a comprehensive evaluation including deterioration of environment and degradation of soil morphology and fertility. studies on a theoretical basis and basic principle for restoration and reconstructions. the study on benefits and functions of a restorated ecosystem

    恢復與重建的生態系統功能與效益的研究，其效益評價由生物多樣性、水土保持功能、土壤養分、小氣候等單一方面轉向利用灰色系統理論及系統工程方法進行綜合評價。
  20. Accompanying with mordern city ' s scale becoming more larger, some problems appear such as environmental pollution, weather ' s becoming warmer, air pollution, water pollution, acid rain, the decreasing of forest, the degradation of soil

    隨著城市規模的不斷擴張，帶來了環境污染、氣候變暖、大氣污染、酸雨、森林植被減少、土地退化、水污染等等一系列問題，文章擬利用城市景觀恢復理論解決這些問題。
分享友人
分享到 Line

分享到臉書