林分密度的英文
发音:
"林分密度"怎么读用"林分密度"造句
英文翻译手机版
- density of stand
- stand density
- "林分"英文翻译 standing forest; stand; crop ...
- "密度"英文翻译 density; thickness
- "林分密度指数" 英文翻译 : stand density index
- "林分密度特性曲线" 英文翻译 : characteristic curve of stand density
- "积分密度" 英文翻译 : integral density
- "林分" 英文翻译 : [林学] standing forest; stand; crop; forest stand◇林分测定 inventory of stand; 林分改造 stand conversion
- "三分密" 英文翻译 : trifid cipher
- "三分密码" 英文翻译 : trifid cipher
- "林分表" 英文翻译 : stand table; stock table
- "林分法" 英文翻译 : stand method
- "林分高" 英文翻译 : stand height; top height
- "林分图" 英文翻译 : stand map
- "林分型" 英文翻译 : stand type
- "主林分" 英文翻译 : main stand
- "差分密码分析" 英文翻译 : differential cryptanalysis
- "单组分密封材料" 英文翻译 : one component sealant
- "多组分密封材料" 英文翻译 : multicomponent sealantt
- "矮林林分" 英文翻译 : coppice stand
- "闭锁林分" 英文翻译 : closed stand
- "标准林分" 英文翻译 : normal stand
- "采种林分" 英文翻译 : nurse-crop; seed stand
- "成熟林分" 英文翻译 : mature forest stand; mature stand; ripe stand
- "单层林分" 英文翻译 : uniform stand
- "法正林分" 英文翻译 : normal stand
- "封垅,林分郁闭" 英文翻译 : closing of crop
例句与用法
- Impacts of stand density of first - rotation chinese fir on growth of 2 - year - old , second - rotation chinese fir plantations
第1茬林分密度对2茬2年生杉木林生长影响 - This paper summarized the studies on biomass production , biomass growth models , biomass measurement , biomass and forest density , as well as carbon storage of poplars in china in recent 20 years
摘要本文总结了中国近20年来有关杨树生物量产量、生物量增长模型、生物量测定、生物量与林分密度,以及杨树碳储量方面的研究进展。 - 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
结果表明: ( 1 )从落叶松幼龄林到中龄林,随着林冠的郁闭和林下植被盖度的急剧下降,林地土壤酸度、土壤酶活性、无机磷总量、速效钾、土壤水分含量、总孔隙度呈明显下降趋势,而根际和非根际土壤有机质含量、腐殖质各组分含量、三大类微生物数量、酸性磷酸酶活性和土壤容重随着凋落物的增加呈明显上升趋势;从中龄林到近熟林,由于抚育间伐,林分密度及郁闭度下降,林下植被盖度逐步得到恢复,根际与非根际土壤有机质含量、富里酸、交换性酸、交换性铝、中性磷酸酶、无机磷总量、放线菌数量、土壤水分含量、总孔隙度呈明显的上升趋势;从近熟林到成熟林,随着林龄的增大,根际与非根际土壤活性酸、有机质含量、腐殖质各组分含量、有效磷含量、氨基酸总量、速效钾、土壤酶的活性、土壤水分含量和总孔隙度呈下降趋势,而根际与非根际土壤全磷含量、土壤酸度(特别是交换性铝)和容重呈增加趋势。
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