forest cover 中文意思是什麼
forest cover
解釋
森林覆蓋-
They are jinfo mountain in nanchuan county ( natural protection section ), wuling mountain in qianjiang county ( national emphases forest demonstration county which forest cover rate is beyond 50 % ) and zhongliang mountain in beibei county ( artificial destruction is very grave ). some main land use patterns i. e. woodland, garden, infield, abandon infield, shrub and grassplot are selected in those three sample sites. four aspects on soil fertility index of karst environment under different land use patterns in these three sample sites, are revealed in this paper, by using the field test, indoor measure and analysis, outdoor experiment and field investigation, and the knowledge and technique of soil, ecology, physics and chemistry etc. they are physical characteristic ( effective soil thickness, organic layer thickness, soil texture, water - stable aggregate and soil water etc. ), chemical fertility ( organism, omni - n, omni - p, omni - k, alkali - nitrogen, available p, available k and rapid available k etc. ), soil animalcule ( bacteria, fungi, actinomyces and their grosses ) and soil - seed - pool ( plant community diversity index ) in karst ecosystem
本研究以重慶市的南川金佛山（自然保護區） 、黔江武陵山（國家重點退耕還林示範縣，森林覆蓋率50以上）和北碚中梁山（遭人為破壞嚴重）典型巖溶區為對象，選擇了幾種重要的利用方式，包括林地、果園、耕地、棄耕地和灌草坡，採用野外巖溶生態調查和室內試驗測量分析相結合的方法，以不同土地利用方式巖溶土壤肥力為重點，對不同土地利用方式土壤肥力特徵進行量化分析，找出巖溶土壤肥力差異的主要方面及其根本原因，論文主要從土壤剖面物理退化指標（有效土層厚度、有機質層厚度、質地、團聚體、水分含量等） ，化學肥力退化指標（有機質、全n 、全p 、全k 、堿解n 、速效p和速效k等） ，樣地土壤微生物指標（細菌、真菌、放線菌數量及總量）以及樣地土壤種子庫植物群落多樣性等4個方面對重慶典型巖溶區的土壤肥力特徵進行了較為詳細的分析研究，為巖溶地區士壤資源的合理利用及結構的調控管理提供依據。 -
After more than 30 years protection, the islet is the cover taiwan acacia, the beefwood, the black pine and the mountain cuckoo, the myrtle, the tree fern, the awn winnow basket, just like virgin forest
經過30多年的保護，如今滿島皆是茂密的相思樹、木麻黃、黑松和山杜鵑、桃金娘、樹蕨、芒箕，猶如原始森林。 -
Moreover, the forest cover had increased since the 1940s from three percent to nine percent of the total land area ; and gradually, over subsequent years, the badlands almost disappeared entirely inside the country parks
此外，樹林的佔地面積由1940年代的百分之三增加至此時的百分之九，郊野公園范圍內的劣地亦在其後多年間逐漸減少。 -
The forest cover rate of the beijiang river drainage basin is higher. affected by c3 plant, its poc 8 13c value was lighter
北江流域森林覆蓋率較高，受c _ 3植物影響明顯，故北江水體中poc ~ （ 13 ） c值最輕。 -
The forest cover will rise from 10. l percent to 27 percent in 30 years in the other three major control regions, namely soil erosion areas in the middle reaches of the yellow river, wind eroded areas on the loess plateau and areas along river sources in qinghai province
用30年左右的時間，使黃河中游水土流失區、黃土高原風沙區、青海江河源頭三個重點治理區森林覆蓋率由目前的10 1提高到27以上。 -
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。 -
This is due to an increase in forest cover in the rich world
這歸功于發達地區森林植被覆蓋率的增長。 -
Influence of forest cover on the water resources in loess hill region of gansu province
甘肅省黃土丘陵地帶森林植被對水資源的影響 -
Investigation of soil and water loss in hunan and jiangxi provinces shows that there are still evident soil and water loss under forest even through the forest cover rate is as high as 51. 4 % and 53 % respectively
對湖南、江西兩省水土流失概況的調查結果表明，盡管森林覆被率高達51 . 4 %和53 % ，林地中的水土流失仍十分明顯。 -
That favorable water environment benefited, not only by the rather large percentage of forest cover with quite strong capacity of water conservation in mountain areas, but also by the comparatively lower gravity of soil erosion in the loess plateau in the middle and lower yellow river basin while numerous lakes and swamps still existed at that time and maintained a huge water storage
中古華北之所以仍能保持良好的水環境，並非由於彼時降水遠比後代豐富，而是因為山區森林植被仍然良好，具有較強的水源涵蓄能力；黃土高原水土流失不甚嚴重，黃河決溢移徙較少、危害較輕，湖泊沼澤尚未因泥沙淤填而致大量消亡，可以瀦積巨量的水源。 -
Fifty percent of the land area has a slope greater than 40 degrees and is ecologically suitable for forest cover only.
50地區的坡度大於40度，而從生態學上說只適合於森林覆蓋。 -
Each year the earth ' s forest cover shrinks by 16 million hectares ( 40 million acres ), with most of the loss occurring in tropical forests, where levels of biodiversity are high
地球上的森林覆蓋面積正在以每年1600萬公頃的速度縮減，其中損失最多的是熱帶雨林，而這里的生物多樣性是最豐富的。 -
Instead of merely estimating the area of forest in each part of the world ( the traditional way of measuring forest cover ), they took into account the volume of timber, the weight of the organic matter and the density of trees to calculate what they dubbed the “ forest identity ”, a measure of the carbon - capturing capacity of forests
他們並不是僅僅估計一下世界各地的森林面積（測量森林覆蓋的傳統手段） ，相反，他們計算木材蓄積量、有機質的重量以及森林的密度以便計算被他們稱為「森林恆等式」的指標，該指標用以測度森林固碳的能力。 -
In hong kong, the original forest cover was cleared centuries ago, and now only secondary forest is left following the 1945 reforestation programme
在香港，原始森林早於數百年前已被夷平，繼1945年開展的植林計劃，現時本港只剩下次生林。 -
To - date, half of all the worlds original forest cover has been destroyed and much of that destruction has taken place over the last 50 years. the most significant cause is due to human beings unsystematic use of timber resources
直到目前為止，全球一半的原始森林已遭破壞，而這些破壞活動大部分在過去50年間發生，最主要是因為人類濫用木材資源。 -
For nearly half a century, his majesty king bhumibol adulyadej and her majesty the queen have travelled the length and breadth of thailand, from northern hilltribe villages to southern fishing communities, and during that time their majesties have sadly witnessed the decline of primary forest cover and the dwindling numbers of once abundant species of flora and fauna
作為一種制度，為了讓人民過上更好的生活，他比任何人都努力，然而也無異于常人。農業計劃、流域發展、森林發展和土地保護、野生動物保護、教育發展和其他無數的活動讓很多觀察家目瞪口呆，在一個國家裡一個家庭怎麼可能做那麼多。 -
According to natural conditions of the area, natural rules and systematic engineering principle, a series of countermeasures were propased such as improving forest cover degree, enhancing water conservancy project, adjusting agricultural production constitution, combining engineering measures with ecological measures to restore mine ecosystem and to take comprehensive measures to control soil erosion so as to improve ecological environmental quality in watershed between the yangtze river and the huaihe river
針對研究區域的自然環境條件和社會經濟狀況，按照系統工程的原理，從遵守自然規律的角度出發提出了提高森林覆蓋率，加強水利工程建設，改良土壤，因地制宜調整農業產業結構，工程措施與生物措施相結合進行礦山修復，治理水土流失，搞好生態環境保護規劃，大力發展生態旅遊，提高公眾的環境意識，依靠科技進步促進地方經濟發展的一系列改善江淮分水嶺地區生態環境問題的對策。 -
Remnants of the original forest cover, either scrub forest or well - developed woodlands, are still found in steep ravines
在陡峭深谷生長的灌林和茂密林木，是昔日森林的殘跡。 -
H alf of the worlds original forest cover has already been destroyed and much of that destruction has taken place over the last 50 years
原生森林已遭摧毀，當中大部份更于過去50年被毀。 -
As a metropolis at the west coast of taiwan strait, fuzhou is possessed of an obviously predominant location, a very good ecological environment, a high rate of the forest cover and abundant resources for tourism
摘要福州市作為海峽西岸的中心城市，區位優勢明顯，生態環境優美，森林覆蓋率高，森林旅遊資源豐富。
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