available soil moisture 中文意思是什麼

available soil moisture 解釋
土壤有效水分
  • available : adj. 1. 有用的，可利用的。2. 可以得到的，可以買到的。3. 有效的。4. 有當選希望的；願意參加競選的。adv. -bly 有效地。n. -ness 有利，有效，效用，利用。
  • 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...
  • moisture : n. 濕氣,水分,潮濕；濕度；（空氣中的）水蒸氣；淚。
  1. In the case of grain legumes, lupines and field peas, french ( 1990 ) has assessed their potential yields, based on available soil moisture similarly to his work with wheat

    用其與小麥相似的研究方法，根據土壤有效水分評估了豆科糧食作物、羽扇豆和紫花豌豆的產量潛力。
  2. A transfer model is established, which can be used to study the interaction between the land surface physical processes of inhomogeneous region and the structure of atmosphere boundary - layer over urban and rural terrains. the model has simulated surface heat flux, surface temperature, temperature profiles, height of mixture layer and so on. and the differences between urban area, suburban area and rural area have been compared. this model mainly depends on the parameters below : surface albedo, surface roughness coefficient, moisture available coefficient of soil, thermal capacity and thermal diffusion coefficient of errain, cloudage. the result shows that this model can simulate the structure and eigenvalues of atmosphere boundary layer and their changes in a day. parameters used in this model aim at beijing city, and the time is at the beginning of september. to other cities, or other time, the parameters should be adjusted accordingly. in addition, being adjusted, the model can also be used for other homogeneous and inhomogeneous terrains

    模式主要依賴于以下參數和物理量：地面反照率下墊面粗糙度土壤的可含水量下墊面的熱容量和熱擴散系數雲量等參數。結果表明，本模式能合理地模擬不同地表熱量平衡地表氣溫混合層高度湍流交換系數湍流動能位溫廓線等，以及它們的日變化。該模式所取參數主要針對北京市，時間為九月初，對于其他城市，參數應作相應的調整。
  3. Mongolica young stand, secondary natural forest, and the mixed forest of larix olgensis and fraxinus mandshurica rupr. countermeasures for controlling soil degradation were also recommended. the study got following results : ( 1 ) from young stand to mid - age of larix olgensis, with the closure of canopy and the decrease of undergrowth vegetation cover, soil acidity, enzyme activity, total inorganic phosphorus, available k, soil moisture and total porosity decreased significantly ; while soil organic matter content, humus component content, the amount of three main types of microbes, acid phosphatase activity, and bulk density in rhizosphere soil and non - rhizosphere soil increased with the increase of the amount of forest floor litter ; from mid - age stand to near mature stand, with the decrease of stand density and crown cover as well as the restoration of undergrowth vegetation after preliminary thinning, soil organic matter content, fulvic acid, exchangeable acidity, exchangeable aluminium, neutral phosphatase activity, total amount of inorganic phosphorus, the amount of actinomycetes, soil moisture, and total porosity in rhizosphere soil and non - rhizosphere soil apparently increased ; from near matu re stand to mature stand, soil activity acidity, organic matter content, humus component content, available phosphorus, total amount of amino acid, available k, soil enzyme activity, soil moisture, and total porosity in rhizosphere soil and non - rhizosphere soil decreased, but total phosphorus, soil acidity ( in particular, exchangeable aluminium ), and bulk density increased

    結果表明： （ 1 ）從落葉松幼齡林到中齡林，隨著林冠的郁閉和林下植被蓋度的急劇下降，林地土壤酸度、土壤酶活性、無機磷總量、速效鉀、土壤水分含量、總孔隙度呈明顯下降趨勢，而根際和非根際土壤有機質含量、腐殖質各組分含量、三大類微生物數量、酸性磷酸酶活性和土壤容重隨著凋落物的增加呈明顯上升趨勢；從中齡林到近熟林，由於撫育間伐，林分密度及郁閉度下降，林下植被蓋度逐步得到恢復，根際與非根際土壤有機質含量、富里酸、交換性酸、交換性鋁、中性磷酸酶、無機磷總量、放線菌數量、土壤水分含量、總孔隙度呈明顯的上升趨勢；從近熟林到成熟林，隨著林齡的增大，根際與非根際土壤活性酸、有機質含量、腐殖質各組分含量、有效磷含量、氨基酸總量、速效鉀、土壤酶的活性、土壤水分含量和總孔隙度呈下降趨勢，而根際與非根際土壤全磷含量、土壤酸度（特別是交換性鋁）和容重呈增加趨勢。
  4. Abstract : digital basinis made from digital elevation model considering spatial variability within a catchment. on the basis of digital basin, the digital approach to describing hydrological processes within a catchment is investigated. digital hydrological model is regarded as a modern physically - based modeling technique that includes a large amount of information. the case study on the shiguanhe catchment in the huaihe river basin, intensified observation field of gewex asian monsoon experiment project, has shown that the digital mode lperforms very well not only in simulating runoff processes at any specific site, but also in simulating spatial distribution and temporal variation of hydrological elements and state variable ( especially soil moisture ), if compared with traditional hydrological models. that provides solid foundation for full use of now available observation in formation and in - depth mining of hydrological data

    文摘:考慮流域下墊面空間變異性，基於數字高程模型構建了數字流域，並在此基礎上對描述流域水文物理過程的數字方法進行了探討.文章認為，數字水文模型是一種有物理基礎的包含大容量信息的現代模擬技術.史灌河流域實例研究表明，數字水文模型可以十分方便地輸出水文要素和狀態變量的空間分佈與時間序列，這對充分利用現有觀測信息進行水文信息的深層挖掘創造了條件
  5. The results are as following : the soil nutrients, such as organic matter, total n, available k and hydrolytic n, and the soil moisture under the shrubs of s. vulgaris were heterogeneously distributed

    研究結果如下：天然臭柏灌叢地土壤水分，有機質、全氮、速效鉀和堿解氮（速效氮）等養分含量的分佈具有空間異質性。
  6. The currently available satellites, however, are single polarization, single frequency sensors such as ers - 1 / 2, radarsat, and jers - 1. there is a need to develop a technique to estimate soil moisture information from these available data sources at both regional and local scales

    傳統的測量方法，如重量法測量和時域反射計都是基於點的測量方法，需要實地操作和煩雜的后處理過程，而且無法在要求的時間精度范圍內得到地表土壤水分的空間分佈信息。
  7. The effects of forest fires on soil moisture content, separate coefficient, porosity, water - retaining capacity, organic matter, available n, available ca, fungi and fine root significantly varied between the years after burning. the effects of forest fires on soil separate coefficients, porosity, saturated water - retaining capacity, available mg, fine root significantly varied between the fire intensity

    火燒後年限對土壤含水率、分散系數、孔隙度、持水量、有機質、有效氮、有效鈣、真菌、細根系生物量的影響有顯著差異；火燒強度對上壤分散系數、孔隙度、飽和持水量、有效鎂、細根系生物量的影響有顯著差異。
  8. ( 3 ) the distributions of both regional soil moisture and available soil water are similar, high in the south and low in the north, and have a mosaic structure similar to the regional precipitation distribution. ( 4 ) the soil moisture of the original slope is influenced s

    （ 4 ）提出「初始萎蔫濕度」的概念，並將其作為判別土壤干化發生的標準；以此為依據，計算並確定了中部黃土高原典型地區的土壤干化層發生分佈情況。
  9. It has shown an evident phenomenon, called " island of fertility " in the shrubs because there were high content of medium - fine soil particles ( 0. 25 ~ 0. 02mm ) and relatively abundant soil moisture, organic matter, total n, available k and hydrolytic n on the soil surface under the shrubs, and furthermore, the content of soil moisture and nutrients gradually decreased from the center of the shrubs to its edge in this soil layer

    灌叢地表層（ 0 5cm ）土壤的中細粒子（ 0 . 25 0 . 02mm ）含量高，並且土壤水分、有機質、全氮、速效鉀和堿解氮含量相對優越， 「沃島」現象明顯，而且，由灌叢內向外，含量逐漸降低。灌叢地下層（ 20cm以下）土壤含水量從灌叢中心向邊緣逐漸增加。
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