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mature forest
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  成熟林
     there are 14 bird species in the edge habitat between the meadow-steppe and Pinus sylvestris var. mongolica natural mature forest (denoted by MPN), and its diversity index is 2.2348;
     草甸草原—天然樟子松成熟林鸟类物种数是14种,多样性指数为2.2348;
短句来源
     Among the middle-age forest (4~7 years), the lumber is suitable to make paper with the requested length by 0.6~1.0 mm, such as blotting paper and so on. The mature forest (8 years and above) is suitable to make paper with the requested length by 0.8~1.1 mm, such as manifold paper and so on.
     中龄林(4~7a生)木材适合造要求纤维长度为0.6~1.0mm吸墨纸等纸,成熟林(8a生以上包括8a生)木材适合造要求纤维长度为0.8~1.1mm打字纸等纸。
短句来源
     The temperature coefficient Q 10values for stem respiration of the mature forest and the young forest were 1.96 and 3.44 respectively.
     成熟林和幼林树干呼吸的Q1 0 值分别为 1 .96和 3.44。
短句来源
     (2)The time that Chinese fir mature forest stemflow begins is 8 to 50 min later than the rainfall began. The stemflow stopped 47 to 140 min later than the rainfall ended.
     (2)杉木成熟林开始产生树干茎流的时间比降雨开始的时间推迟8~50min,树干茎流终止的时间比降雨终止的时间延续47~140mim;
短句来源
     The results showed the trend of soil IFI changes was partial "U", namely, during the course of artificial Picea succession, soil IFI decreased sharply at the initial stage, after artificial Picea reaches mature forest, soil IFI recovered slowly and reached soil IFI of natural coniferous forest finally.
     在人工云杉林地中,土壤IFI表现出非正“U”型的变化,即云杉幼林向成熟林演替时,土壤IFI迅速下降,大约在云杉40龄出现自疏之后,土壤IFI回升,但恢复速度十分缓慢。
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  熟林
     A Study on Fertilizer Application to Nearly Mature Forest of Cunninghamia lanceolata
     杉木近熟林施肥试验研究
短句来源
     For the sake of promoting the reform of capitalization management in Longmen area, in accordance with forest resources inventory data, species and age groups, the assets appraisal of mature forest, semi---mature forest, juvenile forest was respectively carried out by method of market price to calculate, method of resulting the current value, method of replacement cost;
     为促进龙门林场森林资源资产化管理的改革步伐,本文以小陇山龙门林场二类资源调查数据为依据,根据其树种和所处的龄组,采用市场价倒算法、收获现值法、重置成本法分别对该场近成过熟林、中龄林、幼龄林的林木资产进行估测; 应用林地期望价法对该场林地进行了评估。
短句来源
     Research was conducted on the influence of fertilization with four kinds of nutrient elements on the wood basic properties of Pinus massoniana in near mature forest.
     研究了 4种不同营养元素的施肥处理对马尾松近熟林木材基本性质的影响。
短句来源
     Comprehensive evaluation of soil fertility showed the(results:) natural forest>young stand>near mature stand>half-mature stand>mature forest,namely,with the stand ages increasing,soil fertility began to decrease rapidly because of the slow litter decomposition.
     土壤肥力评价结果为:天然林>幼龄林>近熟林>中龄林>成熟林,即随着林龄的增长,土壤肥力迅速下降,其主要原因是林地凋落物分解缓慢。
短句来源
     Through analyzing the types of the preferential flow in the study area, it indicates that the perceptible type of the preferential flow in young, mid-aged and over-mature is the approximate connected macropore flow and the one in the mature forest soil is unsaturated gravitational flow which is dominated by wetness front.
     对研究区域优先流类型开展研究,研究结果表明幼龄林、中龄林及过熟林冰碛物土壤中的优先流类型是近乎连通的大孔隙流,成熟林坡积物土壤中的优先流类型是湿润峰占主导地位的非饱和重力流。
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  “mature forest”译为未确定词的双语例句
     the mature forest is 0.90m~3/ha and overmature forest is -0.11m~3/ha;
     兴安落叶松中龄林的年净生长量为5.94m~3/ha,成熟林为0.90m~3,过熟林为-0.11m~3;
短句来源
     In the mature forest zone, groundwater is 2 5-4 m deep but still slightly salt (1-3 g·L -1 ).
     在胡杨青壮林区域 ,地下水埋深 2 .5~ 4m,但地下水水质仍为 1~ 3g· L- 1。
短句来源
     7.620 and for A bEes mature forest is 4.53 7, with which the gross productivity 32.642and 19.739 was found correspondingly.
     相应地总初级生产力中龄林为32.642t/hm~2·a,成熟林为19.739t/hm~2·a,中龄林总初级生产力比成熟林高40%。
短句来源
     For instance, the biomass proportion(tree layer: shrub layer: herb layer) in A bEes mid-aged forest is 100:0.6:0.2, but inA bEes mature forest is 100:3.9:0.4, the leaf area index in both community are 7.620,
     如中龄林密度为1708株/公顷,乔、灌、草生物量比例为100:0.6:0.2、叶面积指数依次为7.620、0.375和0.032;
短句来源
     (3) the resistance of mature forest was higher than that of pioneer community.
     (3)成熟森林的抗干扰能力高于先锋群落
短句来源
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  mature forest
We studied the distribution of anurans in savanna, regrowth and mature forest at the mouth of the Tapajós river in Brazilian Amazonia.
      
The C fixed capacity of renewed forest with middle-aged trees is higher than that of mature forest.
      
Spring territories of 17 adult capercaillie (Tetrao urogallus L.) cocks were 10-79 ha in extent; they varied inversely in size with the relative proportion of mature forest within them.
      
The number of resident cocks at leks increased with the amount of mature forest within a 1 km radius of each lek center.
      
In one area with intensive logging, interlek distance increased with decreasing amounts of mature forest between them.
      
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A increment of main forest communities in the forest region of the Daxingan mountain is discussed by means of checking up 23 plots which were set up in 1954. For young forest of form, Larix gmelinii, the current annual increment is, 5.94m~3/ha; the mature forest is 0.90m~3/ha and overmature forest is -0.11m~3/ha; the middle-aged forest of Pinns sylvestris var. mongolica 2.53m~3/ha; the mature and overmature forest 1.34m~3/ha; the forest of Betula platyphylla 1.55m~3/ha and...

A increment of main forest communities in the forest region of the Daxingan mountain is discussed by means of checking up 23 plots which were set up in 1954. For young forest of form, Larix gmelinii, the current annual increment is, 5.94m~3/ha; the mature forest is 0.90m~3/ha and overmature forest is -0.11m~3/ha; the middle-aged forest of Pinns sylvestris var. mongolica 2.53m~3/ha; the mature and overmature forest 1.34m~3/ha; the forest of Betula platyphylla 1.55m~3/ha and forest of davurica 1.70m~3/ha. The author indicates that attending felling should be speedily exploited or annual loss would be 1100 million yuan Per year.

本文根据复查的23块1954年设置的标准地材料,分析了大兴安岭林区主要森林群落的生长规律。兴安落叶松中龄林的年净生长量为5.94m~3/ha,成熟林为0.90m~3,过熟林为-0.11m~3;樟子松中龄林为2.53m~3,成过熟林为1.34m~3;白桦林为1.55m~3;黑桦林为1.70m~3。作者指出,对该区的中龄林应进行抚育采伐,成过熟林应强化开采,否则,每年将损失11亿元。

Chifeng is located in lnner Mongolia, where sand dunes prevail, and where the climate is severe and dry, and the soil poor. Based on such natural conditions, different forest management strategies are recommended to meet different situations: For those "small old trees" planted in wind--eroded pits and on gentle slopes of sand land, the desirable measures include timely irragation and cultivation and the application of ammonium sulfate fertilizer. For close stands, thinning twice before main harvest...

Chifeng is located in lnner Mongolia, where sand dunes prevail, and where the climate is severe and dry, and the soil poor. Based on such natural conditions, different forest management strategies are recommended to meet different situations: For those "small old trees" planted in wind--eroded pits and on gentle slopes of sand land, the desirable measures include timely irragation and cultivation and the application of ammonium sulfate fertilizer. For close stands, thinning twice before main harvest is recommended, with the first thinning taking place at the age of 14 years, to remove 25% of the trees, and the second thinning at the age of 16--18 years, to remove 30% of the remaining trees. The number of trees finally left over should be no less than 50 trees per mu. For mature forests, cutting and regenaration should be executed in time. The main harvest could be done at the age of 22--24 years in small patches, usually 3--4 mu each, never exceeding 10. Artificial regeneration is to follow immediately, with poplar species in case that the soil conditions are good, and with Chinese pine and Mongolian Scotch pine for poor soil, in order to form patched mixed forests of coniferous and broad--leaved trees.

本文根据赤峰地区降水少,沙丘起伏,土壤干旱瘠薄的自然条件,划分了冲积沙地,沙丘背风坡、沙丘迎风坡、平缓沙地、以及风蚀坑等五个主要的沙地杨树立地类型。提出杨树幼龄后期,对风蚀坑与平缓沙地的部分地段的“小老树”,采取施硫铵、中耕和灌水等综合措施;对于郁闭后的成林,主伐前分两次间伐、初次在林龄14年,间伐强度为25%,第二次间伐在16~18年,其强度为30%,每亩保留不低于50株。对成熟林应及时采伐更新;主伐年龄定为22~24年,采伐方式为3~5最大不超过10亩的小面积皆伐.水肥条件好的类型,人工更新以杨树为主,条件较差者,则更新油松、樟子松,最终形成块状(?)阔混交林,可取得良好的生态和经济效益。

In accordance with the data of annual volume increments of 99 trees, 220 year-old Korean pine, the age groups of natural Korean pine forests are studied and analysed by the method of category assembling. The results are as follows: young forests, 1—80 years;middle age forests, 81—140 years; near mature forests, 141—160 years; mature forests, 161—200 years;over mature forests, over 201 years.Through variance analysis and multi-layered comparison, it shows that the differences...

In accordance with the data of annual volume increments of 99 trees, 220 year-old Korean pine, the age groups of natural Korean pine forests are studied and analysed by the method of category assembling. The results are as follows: young forests, 1—80 years;middle age forests, 81—140 years; near mature forests, 141—160 years; mature forests, 161—200 years;over mature forests, over 201 years.Through variance analysis and multi-layered comparison, it shows that the differences of annual volume increments among the age groups are significant, and it is demonstrated that the abormentioned standard is scientific and reasonable. Perhaps this standard is better than that in the"some technical rules of investigating forest resources" issued by the Ministry of Forestry of China in 1982.

本文收集99株220年生红松的材积连年生长量材料,采用聚类分析方法,对我国天然红松林合理划分龄组问题进行了探讨。研究结果是:幼龄林1—80年,中龄林81—140年,近熟林141—160年,成熟林161—200年,过熟林201年以上。方差分析和多重比较的结果表明,相邻龄组间林木连年生长量差异显著,又与中华人民共和国林业部1982年颁发的《森林资源调查主要技术规定》中天然红松林龄组划分标准相比较,均证明本文划分标准比较科学合理。

 
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