In the process of secondary succession from conifer - broadleaf forest to broadleaf forest, species richness fluctuated remarkably.
在针阔混交林向阔叶林演替过程中，物种丰富度指数表现为较大的波动性。
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%.
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%。
It also discusses how to combine it with forest management and solve some problems in forest management use the secondary development function of virtual forest.
同时论述了如何将它同森林经营管理结合起来，并通过虚拟林相的二次开发功能来解决森林管理中的一些具体问题。
Study on the Cause of Trunk Bores Spreading Occurrence to the Secondary Coniferous Forest;
通过对武夷山市竹林鼠害的调查，摸清了竹林主要竹鼠的种类和鼠害发生原因。
This paper concerns the rational selection type of secondary logging in Heilongjiang forest area by productivity and productive cost.
这篇文章通过生产率和生产成本讨论了黑龙江林区二次集材选型问题。
Chongqing Linfeng mountain forest park ecosystem belongs to secondary forest, the anti-hazard ability of the system is weak.
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。
The community in shrub forest owned both the characteristics of natural secondary forest and farmland, its dominant species were yellow mouse and squirrel too.
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。
Karst monsoon forest is a relatively weak ecosystem, the stability of the ant community is obviously reduced in its secondary forest.
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。
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.
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。
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.
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。
Small mammals of forest type are mainly distributed in shrubland, secondary forests and primary forest, which are clustered into one group.
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；
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.
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。
Among the factors that affect the spider communities of original secondary forest, people's interference is the strongest one.
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。
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.
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。
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.
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。
The density and biomass of the same plant types were not significantly different between the secondary forest and the rainforest.
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 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.
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。
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.
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。
The mixed forest in Yuquan Mt. is the one of the secondary vegetations preserved completely and developed well in the hilly regions in Hubei Province.
玉泉山混交林是我省丘陵地区保存较完整、发育较好的次生植被之一。
Gebang River, 20km in length, is located in the secondary forest belt of virgin forest, it has a reputation of "Jiuzhaigou of Guizhou".
蛤蚌河全长20余公里，为原始森林次生林带，有“贵州九寨沟”之誉。
This paper reports the study of APMP using mixed hardwood, which grows in the secondary forest in Liaoning eastern mountain area.
对辽宁东部山区次生林中的混合硬杂木，利用APMP制浆方法进行了研究。
Meanwhile, three periods of secondary forest landscape have the consistent performance in different levels of terrain factors.
同时三期二级林地景观在不同的地形因子级别上表现一致。
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 sum of shoot and seedlings was 3.95 and 1.66 times of senescent plant under rainforest and secondary forest, respectively, which meant that A. villosum could maintain population stability.
雨林和次生林下砂仁笋和苗的总数分别为衰老株数量的3 95和1 6 6倍，远多于衰老株数量，表明砂仁能够维持种群稳定。
In this article, soil water storage capacity and availability of different vegetations in the northern of Ziwuling secondary forest region were studied with moisture retention curve.
对内蒙古敖汉旗大五家流域具有代表性的不同林地类型下以及不同立地条件下的土壤蓄水能力进行了测定和对比研究。
A natural secondary forest zone spreads in the upstream of the reservoir.
库区上游分布有天然次生林带。
A natural secondary forest zone spreads in the upstream of the reservoir.
库区上游分布有天然次生林带。
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