植成土 的英文怎麼說
中文拼音 [zhíchéngtǔ]
植成土
英文
phytogenetic soil-
The results indicate that : 1. the main physical and chemical characteristics vary regularly : with rising of the altitude, there is a transition from silt > sand > clay to sand > silt > clay in the mechanical composition ; the argic horizon emerges below the altitude of 1600 meters ; the content of organic matter is enrichment, the content of organic carbon of epipedon is higher than 20 g / kg, while the content of organic carbon increases with increasing of altitude, and in the altitude of 3500 - 3700meters, the soils under the meadow have the maximum content organic carbon ; the soils appear acid - slightly acid reaction, the ph decreases appreciably and acid strengthen with increasing of altitude ; the soils higher than the altitude of 2500 meters are base unsaturated, indicating the soil leaching is strong, the ph and bs are distinct plus correlated ; the contents of sio2, al2o3, and fe2o3 of the soil body and clay are all relatively stabilization ; in the soil body, the content of sio2 is much high and cao is very little, the total contents of sio2, a12o3 and fe2o3 occupy 92 % of the mineral parts, the sequence of mineral elements is : sio2 > al2o3 > fe2o3 > k2o > mgo > cao > tio2 > mno
研究結果表明: 1太白山南坡土壤的主要理化性質隨海拔高度的上升呈有規律的變化:隨海拔高度上升,機械組成由粉粒砂粒粘粒逐漸過渡到砂粒粉粒粘粒,海拔1600m以下出現粘化層;土壤有機質豐富,表層有機碳含量一般在20g kg以上,有機碳含量隨海拔高度升高而相應增加,海拔3500 3700m的灌叢草甸植被下有機碳含量最高;土壤呈酸性或微酸性,並隨海拔上升, ph值略微降低,酸性增強,海拔2700m以上的土壤多呈鹽基不飽和狀態,表明土壤淋溶作用較強, ph值和鹽基飽和度呈極顯著正相關;土體與粘粒中的sio _ 2 、 al _ 2o _ 3 、 fe _ 2o _ 3含量相對比較穩定,土體中sio _ 2含量較高, cao含量較少, sio _ 2 、 al _ 2o _ 3和fe _ 2o _ 3含量之和約占土壤礦質部分的92 ,礦質元素含量的順序依次為: sio _ 2 al _ 2o _ 3 fe _ 2o _ 3 k _ 2o mgo cao tio _ 2 mno 。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。Yet it was the lack of trees there that led to the founding of arbor day in the 1800s
正是因為放眼望不到一棵樹,才促成了十八世紀植樹節的「破土」而出。Tourists visiting tsochen rural township for the first time are sure to be impressed by the chalk badlands, and by the bambusa stenostachya bamboo that has grown there since japanese colonial times. the ground in tsochen is mainly made up of the mt
第一次來到左鎮的觀光客,一定會對觸目所及由白堊土形成的青灰巖惡地貌,以及至日據時期種植至今的大量刺竹林蔭景觀印象深刻。But then, with the intention of bringing trees back to the territory, serious efforts were made by the government to green the countryside. however, the hills - and even some valleys - were dominated by badlands and erosion scars
不過,當年的山嶺,以至部分山谷,皆遍布劣地和侵蝕遺痕加上這崎嶇不平之地主要由花崗巖組成,表土養分易於流失,凡此種種,都對植樹工作構成嚴峻的考驗。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。Storage and composition of soil seed banks of different degraded karst vegetation types in south - eastern yunnan
滇東南巖溶山地退化植被土壤種子庫的儲量與組成It points out that the rational and stable inner structure cannot lead to serious soil moisture shortage ; its natural climate condition can meet the needs of forest community. it is the irrational management that causes the serious soil moisture shortage in artificial forestry land. if we intervene properly and create some growth condition similar to natural vegetation, the recessed artificial robinniapseudoscacia can restore benignly
當前人工林地的土壤水分出現嚴重虧缺而形成土壤干化層並導致人工林衰退是人為不合理經營造成人工林群落林分結構不完善的結果,如果人為干預適當,能創造出類似於天然植被的生存條件,人工植被完全有可能得到正常的生存和發展,出現衰退的人工刺槐林完全有可能得良好的恢復。Based on the serious shortage of soil moisture, soil aridity and vegetation recession in this region, the following issues are studied in this dissertation : ( 1 ) the meaning of soil water and its role in the water circulation ; ( 2 ) soil water deficit and its influence to vegetation growth ; ( 3 ) the definition of soil dried layer and the causes of its formation ; ( 4 ) soil dried layer distribution and characteristics in north of shaanxi loess plateau ; ( 5 ) the primary study of measurable index of soil dried layer
本論文主要針對黃土高原土壤水分嚴重虧缺現狀以及因之而形成的土壤干化和林草植被衰退現象,主要對以下幾方面的問題進行了研究: ( 1 )土壤水分的意義及其在生態系統水分循環過程中的作用; ( 2 )林草植被土壤水分虧缺狀況及其對植被生長的影響; ( 3 )土壤干層的涵義及成因分析; ( 4 )陜北黃土高原土壤干層的分佈及特徵; ( 5 )土壤干層的量化指標初步研究。Based on different regions, the drainage can be used to expand sand control belts of arbors, shrubs and grasses, to increase vegetation coverage of halosols deserts by salt - tolerant plants, or to set up protective belts of salt - tolerant plants around artificial oases
根據區域不同,利用農田排水拓展喬灌草防沙帶、增加鹽成土荒漠耐鹽植被的蓋度、使人工綠洲邊緣的荒漠能夠生長耐鹽植物等都是農田排水資源化利用發展的方向。Moreover, am species composition was also affected by host plant species in polluted soils
宿主植物明顯改變了污染土壤中am真菌的種群組成,土壤ph值對種群組成也有一定影響。The research of ecosystem degradation, restoration and reconstruction in these reg ions has became one of the hot points in soil science, water and soil conservati on science and ecology
研究主要集中於:紅壤區土地退化的成因、過程、機理及退化特徵的診斷與評價研究,而且其評價由單一方面如植被、土壤轉向包括環境劣化、形態退化、肥力退化、污染退化等多方面的綜合評價。Human intervention such as overgrazing resulted in a great decline in soil infiltration rates, which are an important reason for soil degradation and soil drought the experimental results showed that plant biomass and productivity increased significantly with the increase of soil infiltration rates
人為活動干擾,如過度放牧壓實土壤和去除地表覆被造成土壤滲透性顯著降低,是林地土壤質量退化及土壤水分缺乏的重要誘因。試驗結果表明,植物生物量和生產力隨土壤滲透速率的增大而顯著提高。In original and jamming slightly vegetation, because dead roots, branch and leaves back to soil, soil organic matter higher, soil available phosphorus higher, too ; chemical and physical characters of soil were stabilization. the reason were original vegetation have more species and structure of community was stable. the degradation of fertility and structure of soil in secondary vegetation was influenced by change with structure and form of community
在人為干擾小的原生性森林,植物種類豐富,群落結構穩定,植物死根系和枯枝落葉全部回歸土壤,土壤有機質含量高,養分呈有機態為多,故有效磷較高,土壤理化性質較穩定;次生植被群落土壤結構和肥力的退化是由於群落組成和結構的改變導致枯枝落葉成分和土壤發規白山地還小問沙消民俗一非定俗地征王卿喬忡旺w比收財育環境差異而引起,次生植被土壤的退化狀態隨植被退化程度不同而有差異。Symbols of tropics and desert oases, palms are in high demand by land developers across the southwest who plant full - grown palms to instantly create an atmosphere of luxury for new housing or commercial projects
美國西南部各地的土地開發商對棕櫚樹這種熱帶地區和沙漠綠洲象徵的需求量極高,他們常栽植成熟的棕櫚樹,以便立即營造新屋或商用大樓的豪華氣氛。In addition, by means of landscape diversity, evenness, dominance, fragmentation, fractal dimension and statistics, the author respectively analyzed landforms, plant, soil and so on in the original ecosystem of the typical dumping site, the damaged ecosystem and the rehabilitated ecosystem. in fact, landscape matrix has been completely converted from the original ecosystem to the rehabilitated ecosystem. the indexes of diversity, evenness and dominance in forest landscape have sharply increased, but segregation decreased, which demonstrates that the rehabilitated ecosystem has been a reasonable and fine artificial ecosystem under the control of human
在此研究的基礎上,採用景觀多樣性指數、優勢度指數、均勻度指數和破碎度指數,以及分維方法和統計分析相結合的方法,對礦區典型排土場的原生態系統、破壞后的生態系統、重建生態系統的地貌、植被、土壤等景觀要素進行了分析,結果表明:從原生態系統到重建生態系統,景觀基質發生了根本性的變化,林地的多樣性、均勻性、優勢度大幅度增加,分離度降低,顯示了重建生態系統在人為的調控下,已初步形成一個結構較為合理、功能良好的人工復合生態系統。The data indicated that chemical and physical characters of soil in different vegetation types which in same climate type have some difference. that reflected chemical and physical characters of soil not only have relation with soil parent material, climate, physical chemical characters of chemical elements itself, but also with vegetation types
數據表明,在同一氣候條件下,所覆蓋植被類型不同,土壤理化性質也有差異,反映了土壤理化性質除了與其成土母巖、氣候和化學元素自身物理化學性質有密切關系外,植被類型的作用不可忽視。Obviously, these results underline the experience of numerous upland farmers : cultivation without safeguarding a fast and stable vegetative cover of crops inevitably leads to soil loss which means loss of productivity
顯然,這些結果與無數旱地農民的經驗相符合:沒有保證作物快速穩定的植被覆蓋層的耕作無疑會造成土壤損失,進而引起生產力損失。Impacts of the project on vegetation, soil, and patterns of land use will influence the regional ecosystem. large area of cultivated lands, forests, shrubs, and other natural communities will be submerged when the project is built, which will inevitably result in loss of species diversity of plants and animals and their habitats. furthermore, climate may be changing because making of large area of water due to building of the dam
工程會對區域生態系統產生影響,其表現形式是通過對植被、土壤和土地利用格局的影響,影響區域自然生態體系的生態完整性;還會造成部分森林植被的淹沒、野生動植物多樣性及其生境的喪失、以及大面積水域形成后可能對當地一定區域內的氣候產生影響。They are the first plants to grow successfully in martian 2 ) soil, here on earth
它們是頭一批用火星土壤在地球上種植成功的蔬菜。分享友人