第二次长出来的森林就是次生林。
次生林就是经过砍伐后又长起来的天然林。
A secondary forest is a natural forest formed after the original forest was felled.
天然次生林分布范围缩小，人工林栽培面积增加；
The distribution area of natural secondary forests has reduced while that of man-made forests has increased.
暖温带落叶阔叶次生林是中国暖温带森林植被的主要类型。
Warm temperate mixed deciduous broad-leaved secondary forest is the main forest vegetation type in China's warm temperate zone.
药材900余种，是研究动、植物和天然次生林的科学基地。
More than 900 species of herbs, is to study animals, plants and natural forest science bases.
柞木：国家二级珍贵树种，是中国东北林区中主要的次生林树种。
Quecusmongolica:the second class nation protect plant. main species in Northeast china.
重庆临峰山森林公园生态系统属于次生林系统，系统的抗害能力较弱。
Chongqing Linfeng mountain forest park ecosystem belongs to secondary forest, the anti-hazard ability of the system is weak.
在影响原始次生林蜘蛛群落结构的诸因素中，人为干扰的影响作用最大。
Among the factors that affect the spider communities of original secondary forest, people's interference is the strongest one.
红树林人工造林的成活率和次生林恢复的速率在很大程度上取决于生境的沉积率。
It seems that the survival rate of afforestation and the restoration speed of secondary mangrove forests may greatly depend on the sedimentation rate of habitats.
石灰岩山季雨林是一种相对脆弱的生态系统，次生林蚂蚁群落的稳定性显著降低。
Karst monsoon forest is a relatively weak ecosystem, the stability of the ant community is obviously reduced in its secondary forest.
次生林和雨林林下阳春砂仁生物量、产量叶面积指数和各株型密度差异均不显著。
The density and biomass of the same plant types were not significantly different between the secondary forest and the rainforest.
灌丛、原生林和次生林中主要分布有森林型小型哺乳动物，聚为一类，为森林群落型；
Small mammals of forest type are mainly distributed in shrubland, secondary forests and primary forest, which are clustered into one group.
主要研究了辽宁东部山区天然次生林林冠截留降雨、林地土壤的渗透性能和贮水能力。
The canopy interception for rainfall, the infiltration and water-holding capacity of soil of main original secondary forest types in eastern mountain areas of Liaoning province were studied.
本研究为天然次生林采取合理的经营措施，指导各林分类型的经营实践活动提供理论依据。
In this study, it takes reasonable measures to operate the natural secondary forest guide the operation of the various forest types and provide a theoretical basis for practical activities.
在相同的立地条件下，天然次生林和混交林具有更好的维持地力作用和更高的水源涵养功能。
Under the similar site condition, the secondary forest and the mixed plantations had greater water conservation function and better maintenance of soil fertility than the pure stands did.
对近40年生以柞树为主的天然次生林采取不同抚育间伐措施后，定位研究林分凋落物的性质。
After different thinning measures were taken in the 40-year-old nature secondary forest mainly made of oaks, fixed samples were collected to study characteristics of litters.
从蚂蚁群落相似性系数来看，4种植被亚型的原始林和次生林蚂蚁物种的组成均具有显著差异。
According to the Jaccard similarity coefficient, the composition of the ant species all has distinct difference between primeval and secondary forests of the 4 vegetation subtypes.
地图册上以深绿色表示原始丛林，以浅绿色表示次生林。大部分地方的次生林是围绕着原始丛林的。
The maps show, in dark green, Indonesia’s virgin jungle and, in a lighter shade, the secondary forest which, in many places, surrounds it.
栎类次生林乔木的密度随高度级、径级的增加而递减，但树种丰富度却不随树木的密度增加而增加。
Tree density in the forest decreased with the increases of height class and diameter class, whereas species abundance did not increase.
根据小班资源的综合评价，并结合天然林保护的基本准则，将帽儿山天然次生林小班划分为4个保育等级。
Based on the synthetical assessing values and the conservation standards for natural forests, the sub compartments were divided into 4 conservation gradings.
灌木疏林林地群落兼有天然次生林的啮齿动物群落和农田啮齿动物群落的特性，优势种为达乌尔黄鼠和松鼠类。
The community in shrub forest owned both the characteristics of natural secondary forest and farmland, its dominant species were yellow mouse and squirrel too.
采用重复熏蒸-培养法研究了苏南丘陵地区具有代表性的栓皮栎次生林和火炬松人工林土壤有效碳的变化特征。
By using sequential fumigation-incubation method, the soil labile carbon in a secondary Quercus variabilis forest and a Pinus taeda plantation in hilly area of South Jiangsu, China was investigated.
林下植被生物量随林龄增长而降低，所有年龄阶段红松人工林林下植被生物量都低于红松混交林和天然次生林。
The undergrowth vegetation biomass in Korean pine plantations declined over years and was less than that of the mixed forest of Korean pine and secondary natural forest at all age stages.
由此可见，太行山天然次生林在维持大气中O2和CO2平衡、调节气候、净化空气等方面起着相当重要的作用。
Thus, the natural secondary forest in Taihang Mountain plays a very import role in maintaining the equilibrium of CO2 and O2, regulating climate, cleaning air and so on.
依据大量的调查资料，应用有序样本聚类方法，按林分类型、立地条件和林龄来确定次生林改造生长量划分标准；
Based on a large amount of investigating data, the authors use cluster analysis method with ordered samples to set dividing standards for the growth rate of secondary forests rechange.
涞源县植被属华北植物区系，现有植被大部分为灌草丛，其次是天然次生林和人工林，森林覆盖率为18.24%。
Vegetation is Laiyuan County of North China flora, the majority of existing vegetation for irrigation in the bushes, followed by natural secondary forest and plantation, forest coverage is 18.24%.
报告认为相比于人工林原生成熟森林可以储存更多的二氧化碳，因此砍伐原生林的后果比砍伐次生林更严重，将会释出更多的吸热气体。
Established forests store much more carbon dioxide than plantations, so cutting them down releases more heat-trapping gases, it concluded.
通过对黄土丘陵区中龄山杨次生林的凋落物及其分解过程，以及蓄积量随时间变化的分析，研究了枯枝落叶层的持水和截留作用及其蓄水减沙效益。
The wilting litter of the middle aged secondary mountain poplar forest and the decomposing process of litter as well as an amount of their accumulation were analysed with changes in time.
通过对黄土丘陵区中龄山杨次生林的凋落物及其分解过程，以及蓄积量随时间变化的分析，研究了枯枝落叶层的持水和截留作用及其蓄水减沙效益。
The wilting litter of the middle aged secondary mountain poplar forest and the decomposing process of litter as well as an amount of their accumulation were analysed with changes in time.
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