In this paper, two major types, the natural vegetation and crop vegetation in luota are studied. we can gain the different distributive area by remote sensing technology, in accordance with conifer forest, broadleaf forest, thick shrub forest, shrub forest, herbs shrub forest, herbs naked rock and crop vegetation. the valuation of the output of standing trees, water conserbancy, soil conserbation to control erosion and purify the air is the main basis which is used to value the functions of the forest ecosystem of the conifer forest and broadleaf forest of luotathe result reveal that the total ecological function value of the forest which area is 1388. 8 hm2 is estimated up to 18. 36 million yuan per annum. the synthetic valuation system of luota vegetation is put forward by the valuation of per hm2 in evergreen - deciduous forest, conifer forest, conifer and broadleaf forest, broadleaf forest, scatteredtree - shrub forest, coppice - shrub forest, herbs shrub forest, econamic crop and cereal crops. the plant resources is valued according to the ornamental and green plant. lumber trees and medical plant. ornamental plant includes hosta plantaginea. lilium brownii van viridulum, spiraea cantomiensis and so on. lumber tuees includes zzzelkova schneideriana, emmenopterys henryi, catalpa fargesii and so on
本文把洛
塔現存植被分為自然植被與栽培植被兩大類進行研究,
通過遙感技術對現存植被按針葉林、闊葉林、密灌、灌叢、草灌、荒草裸巖、農作物植被等類型進行分佈面積的統計,在此基礎上,以林產品價值、涵養水源價值、保護土壤價值和凈化空氣價值作為估算的主要參考依據,對已成林的針葉林與闊葉林進行森林生態系統的價值估算,得出面積為1388 . 8hm ~ 2的針葉闊葉林的森林生態價值為1836 . 37萬元,參照這一生態價值量,把洛
塔植被按常綠落葉林、針葉林、針闊混交林、闊葉林、疏林?灌叢、矮灌叢、荒草灌叢、經濟作物和糧食作物,以每hm ~ 2的價值量提出了洛
塔植被的綜合價值體系。
Thermometers, barometers, raingauges and a ceilometer are set up in a meteorological enclosure near the air traffic control tower to provide temperature, pressure, rainfall and cloud base information for the aerodrome
航空交
通管制
塔附近則設置了溫度表、氣壓表、量雨器及雲冪儀以提供機場的氣溫、氣壓、雨量及雲底高度的資料。
The towers are normally constructed of cellular sections.
塔柱
通常做成空腹斷面。
Built from the tenth to the twelfth centuries on monastic sites, the most notable being at clonmacnoise in county offaly, round towers were frequently more than 30 metres high
圓形
塔通常建在從10世紀到12世紀的寺院遺址上,經常有30多米高,其中最著名的在offaly郡的clonmacnoise 。
General tolerances for columns - part 2 : glass lined columns
蒸餾
塔通用公差.第2部分:玻璃襯里蒸餾
塔
The 24 - plate column is normally used for continuous distillation experiments and the 12 - plate distillation column for batch distillation experiments
24盤的蒸餾
塔通常情況下是用來持續的蒸餾試驗而12盤的蒸餾
塔則是用來作成批的蒸餾試驗。
The watchtower followed the aircraft by radar
瞭望
塔通過雷達追蹤這架飛機的飛行。
1 this system is used for the chemical laboratory and its functions to remove harmful vapors from the exhausted air by means of water or specified reagent dilution
化學實驗室排氣系統需要有空氣凈化
塔,
通過水和特殊試劑對排氣中有害氣體進行洗滌。
The pyramid of biomass usually has a more gentle slope than the pyramid of numbers because organisms at successively higher levels in the pyramid tend to be larger than those below
由於在生物量金字塔中,那些依次位於較高營養級上的生物體往往大於較低營養級上的生物體,所以生物量金字塔通常具有相對于數量金字塔較為緩和的坡度。