次生林生态系统,secondary forest ecosystem
1)secondary forest ecosystem次生林生态系统
position and seasonal dynamics of macro-and meso-soil fauna insecondary forest ecosystems of Liaodong montane area,China辽东山区次生林生态系统大、中型土壤动物组成与季节动态
英文短句/例句
1.Belowground Carbon Dynamics of Secondary Forest Ecosystems in Northeastern China东北天然次生林生态系统地下碳动态研究
2.Physical and chemical properties of throughfall in main forest types of secondary forest ecosystem in montane regions of eastern Liaoning Province,China辽东山区次生林生态系统主要林型穿透雨的理化性质
position and seasonal dynamics of macro-and meso-soil fauna in secondary forest ecosystems of Liaodong montane area,China辽东山区次生林生态系统大、中型土壤动物组成与季节动态
4.The Study of Biomass and Carbon Storage in the Ecosystem of Secondary Forests of Pinus Massoniana, Acacia Confusa Along the Coast;沿海马尾松台湾相思次生林生态系统生物量及碳贮量的研究
5.Simulation of Carbon Dynamics in a Natural Secondary Forest in Northeast China Using IBIS应用IBIS模型研究东北典型天然次生林生态系统的碳通量
6.ecological system genetics of forestry森林生态系统遗传学
7.Adaptive Management Model of the Forest Ecosystem Productivity森林生态系统生产力适应性管理模型
8.Studies on Net Primary Productivity of Forest Ecosystem森林生态系统净初级生产力模拟研究
9.Dynamic Analysis on the Emergy of Agroecosystem in Western Jilin Province;吉林西部农业生态系统能值动态分析
10.Design of dynamic simulation system for carbon cycle in forest ecosystem森林生态系统碳循环动态仿真系统的设计
11.The Service Value and the Ecological Compensation of Forest Ecological System in Tibet;西藏森林生态系统服务价值与生态补偿
12.Study on the Productivity of Chinese Boreal Forest Ecosystem Under Global Change and Ecosystem Service Assessment;全球变化的中国北方林生态系统生产力及其生态系统公益
13.Expert Meeting on the Rehabilitation of Degraded Forest Ecosystems恢复退化森林生态系统专家会议
14.International Expert Meeting on the Rehabilitation of Degraded Forest Ecosystem复兴退化森林生态系统国际专家会议
15.STUDY ON NUTRIENT CYCLING OF PAULOWNIA PLANTATION ECOSYSTEM泡桐人工林生态系统养分循环的研究
16.CONSTRUCTION OF JINAN CITY GREEN LAND SYSTEM AND CREATE ECO GARDEN CITY构筑济南绿地系统 创建生态园林城市
17.Energy characteristics of alder cypress mixed plantation ecosystem.人工桤柏混交林生态系统的能量特征
18.Discussion of the forest ecological restoration in the Dan河南丹江流域森林生态系统恢复探讨
相关短句/例句
forest ecosystem森林生态系统
1.Evaluation of indirect values offorest ecosystem in Jigongshan National Nature Reserve;鸡公山自然保护区森林生态系统间接价值评估
2.Theforest ecosystem services and their valuation of Jigongshan National Nature Reserve;鸡公山自然保护区森林生态系统服务功能及其价值初步研究
3.Current and future study about effects of acid deposition onforest ecosystems;酸沉降对森林生态系统影响的研究现状及展望
3)forest ecological system森林生态系统
1.This paper summarized the research status of plant heavy metal (Cu、Zn、Cd) pollution in home and foreign relativeforest ecological system and the action of plant in plant heavy metal monitoring and controlling,and put forward some ideas on the future research direction.综述了国内外有关森林生态系统中植物重金属(Cu、Zn、Cd)污染的研究现状以及植物在重金属监测与防治中作用,并对今后的研究方向提出了一些看法。
2.In this paper,utilized recent investigation data of the forest resources,computed quantificationally the sercice value of theforest ecological system,and took the forest resource status and the actual ecological policy into consideration,then to analyze positively the ecological compensation institution in Tibet.采用西藏最近的森林资源清查数据,定量计算了西藏森林生态系统的服务价值,并结合西藏森林资源状况和现行的生态政策,实证分析西藏的生态补偿制度,提出分阶段、分步骤地实施补偿的具体建议,为西藏生态补偿政策的制定和补偿标准的出台提供科学依据。
3.Indirect economic loss caused by alien invasive species onforest ecological system is mainly induced due to the decrease of public welfare function.外来入侵物种对森林生态系统影响间接经济损失主要是生态系统公益性服务功能降低所造成的经济损失,间接经济损失的大小与林分生长量的下降成正比。
4)forest ecosystems森林生态系统
1.Summary of Study on the Ecohydrological Functions of Karst Forest Ecosystems in Guizhou;贵州喀斯特森林生态系统水文生态功能的研究
2.Establishing and validation individual-based carbon budget model FORCCHN offorest ecosystems in China;基于个体的中国森林生态系统碳收支模型FORCCHN及模型验证
3.Review on coupling of interactive functions between carbon and nitrogen cycles inforest ecosystems;森林生态系统碳氮循环功能耦合研究综述
5)Mangrove ecosystem红树林生态系统
1.A review of studies on microbiology of mangrove ecosystems;红树林生态系统微生物学研究进展
6)artificial forest ecosystem人工林生态系统
1.Characteristics of carbon stock inartificial forest ecosystem in Sichuan Province of China;四川人工林生态系统碳储量特征
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