vegetative cover 中文意思是什麼
vegetative cover
解釋
植被- vegetative : adj 1 植物的；蔬菜的。2 會生長的，有生長力的；發育生長的 （opp reproductive）；無性繁殖的；能使植...
- cover : vt 1 覆蓋，遮蔽，包裹；戴帽子；包庇，隱蔽，掩蓋；滅跡，（用紙）表（墻）。2 孵（小雞）；（種馬）交...
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When cultivated and stripped of their dense vegetative cover, soils of the humid tropics quickly lose their fertility.
當將厚密的植被除去並耕種時，潮濕熱帶地區的土壤就會迅速失去其肥力。 -
The great bustard is polyphagia bird, but it feeds mainly on plants. the feeding field habitat selection relate with that whether the grassland burn or not last year. the important factors that determine the feeding field selection are the plant species, vegetative cover score. density hemerrocallis minor and the density of pedacularis sp. on burning grasslandsjthe density of vegetation. insects quanlity. plant species richness and the height of plant are the main factors that determine the feeding field selection on unburning grasslands
大鴇是雜食性鳥類，但以植物性食物為主。對于取食地的選擇往往跟草原上一年是否被火燒過有關。在火燒地，植物種類數、植被蓋度、小黃花菜密度和蒿密度是取食地選擇的重要因素；在非火燒地，植被密度、昆蟲數量、植物物種豐富度及植物高度在大鴇取食地選擇中發揮重要作用。 -
The great bustard selects the areas with abundant plant species. higher vegetative cover score. smaller proportion of bare area and taller plants to display on postfire grasslands ; the important factors that influence the great bustard to selection display fields are the proportion of hay, stipa baicalensis density and the thickness of hay on unburing grassland
在火燒地，大鴇會選擇植物種類數較多、蓋度較大、裸地比例較小及植株相對較高處進行求偶炫耀；在非火燒地，枯草比例、貝加爾針茅密度及枯草厚度是影響其求偶場選擇的重要因素。 -
In this research project, the agrobacterium tumefaciens mediated transformation of badh gene of tetraploid black locust has been studied, for the purpose of improving resistance to soline - alkali and drought of tetraploid black locust ; of playing more important role in developing of waste lands, ameliorating of soline - alkali soil, and greening and beautifying of surface - mined lands, mine waste dumps, slopes of roads and railroads where restoration of vegetative cover has proven difficult ; of fully making benefits of its ability to fix atmospheric nitrogen in the soil
為了進一步提高四倍體刺槐的耐鹽性和抗旱性，進一步擴大其適宜種植的生態范圍，充分發揮其固氮、改良土壤的特性，在我國的城鎮綠化、荒山造林、鹽堿地改良以及采礦跡地、公路、鐵路邊坡等植物生長困難土地的植被恢復中發揮其優勢，本實驗對四倍體刺槐進行了農桿菌介導的甜菜堿醛脫氫酶基因轉化的研究。 -
Under the guide of pi dang ( professor dang anrong, from tsinghua university ), during the project, we investigated many historic sites and local culture, measured and calculated vegetative cover extent in the local field, we also did effective surveys and interviews related to public health problem
在項目組負責人，來自清華大學的黨安榮教授的指導下，項目實施期間，我們走訪調查了很多名勝古跡，研究了當地文化，對當地植被覆蓋情況進行了測量計算，我們也對有關公眾健康問題進行了卓有成效的調查和采訪。 -
This thesis estimated the environment quality in the source area of the yellow river and classified it as third class according to the vegetative cover
本文以植被覆蓋度為生態因子評價黃河源區生態環境質量，將黃河源區生態環境質量定為級。 -
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。 -
Envi, a software that can deal with remote sensing image, was used to process tm image. according to the investigation on the spot, the grassland taxonomy of our country and the criterion of estimating environment quality, the vegetative cover in the source area of the yellow river was classified as five kind in this thesis
本文利用envi遙感圖像處理軟體加工處理的tm衛星影像，根據實地調查，按全國草地調查統一分類法，結合生態環境質量評價標準，本文將黃河源區植被覆蓋劃分為5個等級，並採用非監督分類法對黃河源區tm影像進行分類。
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