次生林,secondary forest
1)secondary forest次生林
1.Barrier effect of litter on natural regeneration in northeastsecondary forest;东北次生林区枯落物对天然更新的障碍作用
position and carbon storage of woody debris in moist evergreen broad-leaved forest and itssecondary forests in Ailao Mountains of Yunnan Provinve;哀牢山湿性常绿阔叶林和次生林木质物残体的组成与碳贮量
3.Fine root biomass and its depth distribution across the primitive Korean pine and broad-leaved forest and itssecondary forests in Changbai Mountain,northeast China;长白山原始阔叶红松(Pinus koraiensis)林及其次生林细根生物量与垂直分布特征
英文短句/例句
1.Thestudy on the Seccusinasl Tendeny of the Secondary Forestry in LinNan;岭南林场次生林林分演替趋势的初步研究
2.Optimal Growing Space for Juglans mandshurica in Second Growth Forests in Changbai Mountains长白山林区天然次生林胡桃楸的适宜生长空间
3.Study On The Natural Secondary Forest Management In Emphases Ecological Welfare Forest重点生态公益林中天然次生林经营的研究
4.ITTO"s Classification and Definition on Primary Forest,Degraded Primary Forest,Secondary Forest and Other Categories of Tropical ForestsITTO对原始林、退化原始林、次生林和其他热带森林类别的界定
5.Investigation of Growth Regularity of Arisaema in the Secondary Forest of Zuojia左家天然次生林中天南星的生长规律
parison of Biomass of Betula alnoides Plantations and Natural Secondary Forests in Xishuangbanna2种西南桦人工林与同地2种天然次生林的林分生物量对比研究
7.Diameter Distribution of Main Tree Populations in Natural Secondary Forests in North Fujian闽北天然次生林林木直径分布规律的研究
8.Soil Respiration of Temperate Secondary Forest and Larix Gmelinii Plantation in Northeastern China;东北温带次生林与落叶松人工林的土壤呼吸
9.Tree Individual Pattern Control and Analysis of Secondary Forest in Moarshan Mountain;帽儿山天然次生林林木空间结构控制方法
10.Study on the Quantitative Analysis of the Oak Natural Secondary Forest in Baotianman Nature Reserve;宝天曼栎类天然次生林林分结构量化分析
11.State-owned forest areas of natural secondary forest operations to be improved to save对提高国有林区天然次生林经营水平的探讨
12.Study on Precipitation Hydro-chemical Characteristic of Different Stages of Betula platyphylla Secondary Forest不同林龄白桦次生林降雨水化学特征研究
13.Influences of Fire Disturbance on the Water Repellency of Pinus massoniana Soil森林火灾对马尾松次生林土壤斥水性的影响
14.Forest Hydrological Effects of Litter Layers Under Different Natural Secondary Forest in Three Gorges Reservoir Area三峡库区天然次生林凋落物森林水文效应研究
15.Study on Intraspecific and Interspecific Competition of the Populus davidiana Secondary Forest in Mao"ershan Mountains Area帽儿山地区山杨次生林林木竞争关系的研究
16.The Seed Bank in Logging Gaps in Populus davidiana-Betula platyphylla Secondary Forests in Changbai Mountain长白山杨桦次生林采伐林隙种子库特征
17.Habitat and Ecology: On moist places in secondary forests of mountain ridge.生境与生态：生于山顶次生林中潮湿的处。
18.Habitat and Ecology: On open hillsides, margin of forests and sometimes in secondary forests.生境与生态：多生长于林下、缘及山坡草地，有时亦见于次生林中。
相关短句/例句
secondary forests次生林
1.On the structure and patterns of major tree species populations ofsecondary forests in the montane regions of eastern Liaoning Province.;辽东山区次生林主要树种种群结构和格局
2.Different Types of Secondary Forests of Chimonobambusa utilis and Their Management;金佛山方竹次生林类型与经营措施
3.A comparative study on habitat preference of giant pandas in primary andsecondary forests.;大熊猫在原始林和次生林中生境利用的比较研究
3)second growth;secondary forest次生林(林)
4)secondary oak forest次生栎林
1.Seasonal fluctuation of soil microbial biomass carbon insecondary oak forest and Pinus taeda plantation in north subtropical area of China;北亚热带次生栎林与火炬松人工林土壤微生物生物量碳的季节动态
5)secondary forestland次生林地
6)secondary oak stand次生栎林
1.The correlation between environmental factors and transpiration intensity of thesecondary oak stand;次生栎林蒸腾强度与生态因子的关系
延伸阅读
次生林次生林secondaryforest原始森林经过多次不合理采伐和严重破坏后自然形成的森林。与原始林一起同属天然林，但其立地特点、树种组成、林分结构和起源与原始林、人工林不同。人工林采伐迹地上，栽培树种的萌生林与入侵树种形成的混交林，也属于次生林。次生林分布范围广，种类多，不仅可以生产木材、薪炭材和林副产品，而且在涵养水源、保持水土、调节气候和维持生态平衡等方面均起着重要的作用。中国次生林约占全国森林面积的46.2％。次生林可划分为多种类型。①按发生时间分成早期次生林、中期次生林和晚期次生林。一般用以区别大范围内次生林的性质及恢复速度，供经营规划时参考。②按发生地区分成远山次生林和近山次生林。一般反映人为活动的强弱及经营次生林与农业的关系。③按经营措施分成抚育型、改造型、利用型和封护型等。④还可按森林自然特征分类，方法较多，有按优势树种和树种组成划分的，有以生态因子划分的，有以地形作为主导因子进行划分的，还有以立地条件和优势树种划分的。次生林的经营措施应根据自然特征和经济条件（交通、劳力、产品销路等）选用：①抚育间伐。科学地确定采伐木和采伐强度，为目的树种生长创造有利的环境条件。②林分改造。是在密度小、经济价值低或病虫害严重的林分中全面或局部伐除原林分，再栽植珍贵树种，以调整林分组成，增加林分密度，提高林分生产力。③抚育改造。是抚育间伐与林分改造相结合的一种经营方式。④封山育林。利用树木自然繁殖能力恢复森林的措施。可分为全封、半封和轮封3种。封山期间禁止一切人为活动，开封片则允许在一定季节内进行林副业生产活动。主要用在交通不便和经营水平不高的地区。郁郁葱葱的次生林
