測定土壤濕度 的英文怎麼說
中文拼音 [cèdìngtǔrǎngshīdù]
測定土壤濕度
英文
measuring soil moisture- 測 : 動詞1. (測量) survey; fathom; measure 2. (測度; 推測) conjecture; infer
- 定 : Ⅰ形容詞1 (平靜; 穩定) calm; stable 2 (已經確定的; 不改變的) fixed; settled; established Ⅱ動詞...
- 壤 : 名詞1. (土壤) soil 2. (地) earth 3. (地區) area 4. (姓氏) a surname
- 濕 : Ⅰ形容詞(沾了水的或顯出含水分多的) wet; damp; humid Ⅱ名詞(姓氏) a surname
- 度 : 度動詞[書面語] (推測; 估計) surmise; estimate
- 測定 : determine; determination; setting-out; admeasurement; assignment; assay; finding
- 濕度 : humidity; dampness
-
( 2 ) after statistical experiment on color indexes of weed images which were acquired in various illumination intensity, soil humidity and remains coverage, it pointed out that hue and relative color index are insensitive to illumination intensity, soil humidity, remains coverage and shadow, hue and excess green have a distinct contrast between plant and non - plant, but can not be used to identify corn and seed
( 2 )利用自行開發的aoi (感興趣區域)工具,通過對不同土壤濕度、光照強度和殘茬覆蓋率下的雜草圖像進行顏色指數測定與分析,指出色度及過綠特徵對光照強度、土壤濕度、殘茬覆蓋率、植物陰影的影響不敏感,且在植物與非植物之間存在足夠的對比度,但不能用於玉米與雜草,或闊葉雜草與窄葉雜草的識別。Under the condition of different soil humidity and measuring time, a series of ecophysiological indexes, such as net photosynthetic rate, transpiration rate, stomatal conductance, the flow of water, atmospheric temperature, relative humidity, photosynthetic available radiation, and hydraulic conductivity are measured in order to find the factors which cause robinia xylem embolism
摘要在不同的土壤水分含量和不同的測定時間條件下,對刺槐的一系列生理生態指標:凈光合速率、氣孔導度、蒸騰速率、水勢、大氣溫度、相對濕度、光合有效輻射以及導水率進行測定,探求刺槐木質部發生栓塞的影響因子。The approaches establish a relationship between monthly precipitation abnormality and monthly circulation, soil moisture and temperature on the shallow and deep layers. the relationship is the precipitation diagnostic equation and its coefficients and dimensions are determined by using the observed data of huai river basin. then we select the main soil moisture and temperature attributing factors by the dimensional analysis to establish a forecasting equation of summer precipitation over huai river basin with the statistic approach
通過將大氣中的熱量、水汽收支方程與一個簡化的兩層土壤溫度、濕度方程相結合,並依據月尺度大氣環流的演變特徵,推導出月降水距平與500hp月平均高度距平場、土壤深淺兩層溫、濕度的關系;利用臺站觀測資料,使用統計反演方法確定方程中各項的系數和量級,從而找出影響降水的主要土壤溫、濕因子;利用統計方法建立這些因子與淮河流域夏季降水異常之間的簡單線性預報方程,並對1992 - 2000年淮河流域夏季降水趨勢進行回報。The objectives of this study are : ( 1 ) collect the basis data about soil physical properties, soil moisture, infiltration and evapotranspiration in the catchment scale for developing a catchment hydrological model, based on the dtm, ( 2 ) provide the hydrological information in the catchment scale for developing agricultural production, vegetation rehabilitation, and reasonable land using in this region. the main conclusions drawn from this study are : ( 1 ) the soil physical properties, including bulk density, saturated soil moisture, field capacity, and wilting moisture, were measured at 56 plots across the catchment
為此,本文以黃土高原溝壑區典型小流域?王東溝為研究對象,通過大量的野外測定和室內分析,系統研究了流域土壤容重、土壤飽和含水量、田間持水量、萎蔫濕度、土壤入滲性能、土壤含水量和蒸散量的空間變異性,以期為該區農業生產、植被恢復和土地合理利用等提供科學的依據,同時為建立基於數字高程模型( dtm )為基礎的流域水文模型積累基礎資料。The community productivity, structure and succession are significantly influenced by global climate changes. this study focused on soil respiration rate of stipa baicalensis grassland by using dynamic infrared gas absorbed method. we analyzed diurnal pattern of soil respiration rate and the influences of surface soil temperature and water content for this parameter, then compared the differences between day and night soil respiration rates, and explored the correlations between aboveground and underground biomass with the soil respiration
溫帶的半乾旱、半濕潤區草甸草原屬于過渡氣候影響下形成的植被類型,對環境氣候條件變化十分敏感,為了揭示半乾旱、半濕潤區草甸草原生態系統土壤碳素釋放規律及其對主要環境因子的響應,本研究採用動態室紅外氣體吸收法測定松嫩草甸草原典型群落? ?貝加爾針茅群落土壤呼吸速率,分析了土壤呼吸速率日變化規律及表層土壤溫度和含水量對土壤呼吸速率日變化的影響,比較了土壤呼吸速率的晝夜差異,探討了地上生物量和地下生物量與土壤呼吸速率之間的相關關系。In order to solve problems existing in current measuring methods for radon exhalation rate ( such as the effect of unequilibrium radon and its progeny, humidity effect, leak and back - diffusion effect, etc. ), based on the principle of surveying radon and its progeny in the medium surface, a rapid arid accurate method for measuring radon exhalation rate taking advantage of the rad7 radon detector was established
摘要本文根據介質表面氡析出率的測量原理,針對目前國內外現有的氡析出率測量方法中存在的一些問題,如對氡及其子體的不平衡影響、濕度效應及泄漏和反擴散等影響未作修正等,實驗研究了一種用rad7型氡氣檢測儀快速測定土壤、巖石、建材和尾礦等介質表面氡析出率的方法。Soils : investigation and testing. determination of moisture content. oven drying method
土壤:調查和試驗.濕度含量的測定.烘乾方法Standard practice for wet preparation of soil samples for particle - size analysis and determination of soil constants
土壤粒度分析和常數測定用樣品的濕法制備的標準操作規程分享友人