bare soil 中文意思是什麼
bare soil
解釋
不毛地-
Large area forest and bosk ( in liupan mountain ), dense grass ( moon mountain ), river and irrigative area, water, bare soil, each distribution characaters is differened from others. the case is showed that vegetation covered influence surface moist - heat character
大面積的森林和灌叢（如六盤山一帶） 、茂密的草地（如月亮山） 、河流邊緣及附近有灌溉的地域（分佈有草地和農田） 、水體以及裸地區，這些區域各量的分佈特徵與其周圍地域明顯不同。 -
It is a very complicated problem to estimate evapotranspiration ( et ) over a large area natural surface. based on the information of satellite remote sensing and geography, the natural surface is divided into 6 categories : water, bare soil, dense grass, partly grass covered, forest, bosk
利用遙感資料求取ndvi ，依據ndvi和地理信息資料，將地表分成6類：水體、裸地區、草地?裸地區（有草覆蓋但未完全覆蓋） 、草地完全覆蓋區、樹林區、灌木叢區。 -
Land left in bare fallow to be sown with winter crops sustained losses that far exceeded the rate of new soil formation.
留作播種冬季作物的休耕地所經受的土壤流失遠遠超過土壤生成的速率。 -
As a result it enhanced the water - retaining and fertility - retaining capacity, strengthened the anti - scour and anti - erosion ability. 3. sabaigrass can meliorated the little entironment of purple soil bare slope field the results show that sabaigrass treatment and grass tree solid plating treatment can reduce n ( nitrogen ), p ( phosphorus ) and k ( potassium ) erosion, increase soil nutrition element content, it also increase soil water content and soil pondage, decrease soil water evaporation, strengthen the anti - drought ability
龍須草能改善紫色土荒坡地的小生境龍須草純種植被和林草立體種植植被能不同程度地增加土壤的有機質和速效n 、 p 、 k的含量；增加土壤含水量和貯水量，減緩和減少土壤的水分蒸發，增強土壤的抗旱能力；降低土壤盛夏的地表最高溫度，減少地表溫度變化幅度。 -
In order to solve this problem, we find a kind of herbages plant - sabaigrass ( eulaliopsis binata ) which not only can accommodate the badly environment of purple soil but also have excellent water and soil conservation effect and good economic benefit. this study adopt quantitative and qualitative methods, through comparative study of four different utilization types : sabaigrass treatment, grass tree solid plating treatment ( planting sabaigrass under fruit trees treatment ), bare land treatment, natural wild grassland treatment, study water and soil conservation effect, soil water condition, soil constructors condition, soil fertility condition and soil surface temperature, then evaluated the water and soil conservation effect of plating sabaigrass in purple soil bare sloping field and probed into water and soil conservation mechanism. the main results are as follows : 1
本研究針對湖南省衡邵盆地紫色巖地區日益惡劣的生態環境，從紫色土荒坡地水土流失治理入手，在尋求出既適應紫色土荒坡地惡劣環境又有良好水土保持作用和一定經濟效應的作物? ?龍須草的基礎上，用定性和定量相結合的方法，以「龍須草純種」 、 「龍須草與果樹立體種植」 （簡稱林草立體種植，下同） 、 「空曠地」 、 「自然野生雜草地」四種不同的土地利用方式進行對比研究，從水土保持效應、土壤水文狀況、土壤結構、土壤肥力狀況、地表溫度狀況等方面分析、評價紫色土荒坡地種植龍須草防治水土流失的效應，並對其機理進行了初步探討，主要研究結果如下： 1 -
2. the structure of purple soil is meliorated by sabaigrass. when contrast to bare land treatment and natural wild grassland treatment we knew that sabaigrass treatment and grass tree solid plating treatment reduced soil bulk density, enhanced soil capillary porosity, non - capillary porosity and porosity ratio, decreased soil sand grain content, enhanced soil clay grain and silt grain content so as to reduced the dispersal degree of soil, improved the aggregate capacity of soil, increased the amount of soil aggregate structure, meliorated the water permeability of soil, accelerated the form of good soil structure
龍須草能改善紫色土的土壤結構龍須草純種植被和林草立體種植植被能不同程度地降低土壤容重，減少土壤砂粒含量，增加土壤的毛管孔隙度、非毛管孔隙度和孔隙比，以及增加粉粒含量，從而降低土壤分散度，提高土壤團聚性，增加土壤團粒結構數量，改善土壤的透水性，促進良好土壤結構的形成，最終提高土壤的蓄水保肥性能，增強土壤的抗蝕性和抗沖性。 -
Soil erosion process research of the loess bare slope
黃土裸坡土壤侵蝕過程研究 -
Severe “ whiptail ” condition in field specimen from and acid soil. bare midribs or very narrow residual lamina
甘藍缺鉬「鞭尾癥：在田間試驗和酸性土壤上有嚴重的鞭尾癥狀，中脈突出，狹小的葉片殘留。 -
On the contrary, the latent heat and sensible heat on a clear day is 60 % and 19 % of net radiation above bare soil surface
就平均狀況而言，潛熱、顯熱和土壤熱通分別佔到凈輻射的40 、 50和10 。 -
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。 -
The evapration of water area is calculated by et0 multiplied by kc ; and then the evapotranspiration estimation models for other categories ( singular underling surface ) are presented ; based on bare soil and dense grass models the evapotranspiration estimation models for partly grass covered surface is presented combined with vegetation fraction data. it is feasible and logical each categories using singular way and mean, the result of regional evapotranspiration over south ningxia is given
將水體單獨處理，由參考作物蒸散乘以比例系數直接計算得出水體蒸發；建立了4種單一類型下墊面（裸地區、草地完全覆蓋區、喬木林區、灌叢區）蒸散計算模型；對混合下墊面（草地?裸地區）區域蒸發（散）計算方法使用裸土和草地完全覆蓋蒸發（散）計算模型，然後結合植被覆蓋度給出。 -
Validation of the presented approach is verified through numerical simulations of radar measurements over the bare soil surfaces
本研究以裸露土之土壤?度及其雷達散射系數的數值模擬來驗證此一方法之有效性。 -
The maximum of instantaneous global radiation is beyond 1000w / m2 and the ten - days average intensity is 338. 90w / m2 because of high atmospheric transparency over semi - arid rainfed agriculture region of loess plateau between june and august. global radiation, reflected global radiation and surface long wave radiation emerge the characteristic of daily variations on a typical clear day and cloudy day, whereas atmospheric long wave radiation has not this characteristic. meanwhile, net radiation, latent heat flux sensible heat flux and soil heat flux appear the same characteristic as the mean daily variations above spring wheat field and bare soil on a typical clear day and cloudy day
黃土高原半乾旱雨養農業區夏秋季大氣透明度較高，晴天地面的總輻射值最大瞬時值均超過1000w m ~ 2 ， 6 8月總輻射旬平均強度為338 . 90w m ~ 2 ；典型晴天和陰天總輻射、反射輻射、地表長波輻射均表現出明顯的日變化特徵，而雨天沒有明顯的日循環規律；無論是晴天、陰天還是雨天，大氣長波輻射基本沒有明顯的日變化規律。 -
For parameter a, there is a close relationship exist between a ( 9, sr ) in two different radar incident angle that can be expressed as : with considering the effects of soil texture, we get the final expression of the inversion model : where mv ( t1 ), mv ( t2 ) is volumetric soil moisture content in two different temp, c, d is soil type related parameters, and v ( t1 ), s ( t2 ) is coresponding bare soil radar backscattering coefficients. inversion results show that for the c band hh polarized radarsat scansar data with a range of incidence angle from 20 to 40, the soil moisture change value can be derived with an acceptable accuracy using the above model. the temporal and spatial soil moisture change patterns are associated with rainfall and vegetation cover, as well as the soil hydraulic characteristics
利用最新發展的電磁波散射模型研究了不同植被覆蓋地表雷達波對地表土壤水分的敏感性，建立了半經驗植被雷達後向散射模型; 2 ） .研究發現在農作物等矮小植被覆蓋地表，植被層直接後向散射與植被類型相關，且在植被生長期，雷達後向散射系數對植被含水量的敏感性要高於對植被高度變化的敏感性; 3 ） .解決了單參數雷達地表土壤水分反演問題中，雷達入射角和地表粗糙度的影響這一難點問題; 4 ） .利用土壤介電模型校正了不同土壤類型對反演地表土壤體積含水量的影響; 5 ） .在以上成果基礎上，建立了完整的單參數雷達地表土壤水分變化探測反演演算法，經地表驗證，模型反演地表土壤水分變化值的精度為rmse = 0 -
The daily albedo variation, which is big in the morning and afternoon and smallest at midday, emerge parabola above spring wheat and bare soil surface
春小麥和裸地兩種不同下墊面的地表反射率日變化均呈現出拋物線特徵，早晚反射率較大，正午反射率最小。 -
We found that the higher midlayer and deeplayer water contents after harvest, the faster alfalfa grew, and, the more quickly covered the bare soil, the more soil evaporation restrained. in this way, the soil could sustain higher shallow soil water contents
即使在平水年和豐水年，在7月之前降水也不能滿足苜蓿的正常生長需要，而在7月以後，降水量略大於苜蓿需水量，所以要獲得高產必須進行灌溉。 -
( 3 ) compared with bare soil, income of net radiation declined, apparent heat weakened and latent heat exchange were almost disappeared on the soil surface with film
（ 3 ）薄膜覆蓋于土壤表面后，與未覆蓋的土壤相比，地表凈輻射r _ n收入下降，顯熱交換p減弱，潛熱交換le趨于零。 -
Bare soil is protected from the impact of rainfall which can cause surface soil crusting, compaction, and erosion
塑料薄膜覆蓋使裸土免受降雨引起的表土結殼、壓實和侵蝕。 -
3. because of the severe occluding of drilling crop leaves, it was difficult to extract shape and texture feature, so a new approach to detect the between - rows weed was discussed on the basis of the position feature, where crop was regularly sown as a constant row space and most weed were distributed on the bare - soil between crop rows during 3 leaves to 5 leaves seedling stage
針對小麥等條播作物田間場景中葉片嚴重交疊致使形狀和紋理特徵提取困難的問題，利用條播作物3 5葉苗期田間場景中作物成行排列、雜草多數分佈於作物行之間的裸土區的特點，研究了位置特徵識別行間雜草的方法。 -
During the growing season, the soil water content from 0 - 200 cm of vegetated sites was closely related to precipitation, but the barren slope was different. soil water content under bare soil remained relatively high ( 12 % ) throughout the growing season
各植被類型立地0 ? 200cm土壤水分的季節變化與降水量的季節分佈一致，但對照裸坡地整個生長季土壤水分呈波動變化，平均土壤含水量維持在12左右的較高水平。
分享友人