查询词典 selection forest

It is a must to be solved urgently issue that coordinating the forestry economic and ecological benefits, In this study, the research based on the forest species selection, on the basis of carrying on field investigation to forester in some areas of Hebei Province, analyzed the influence of foresters operating different forest species and factors of influence forest species selection.

内容提要林业经济效益和生态效益的协调是当前林业发展亟待解决的问题。以林农对林种的选择为切入点，在实地调研的基础上，分析林农经营不同林种对协调林业经济效益和生态效益产生的影响以及影响林农选择林种的因素。

The paper reviewed the host selection mechanisms and rules of xylophagous insects and their application foreground in forest health evaluation. According to the rule that some secondary xylophagous insects always accompany with trees which are sub-healthy or unhealthy, ideas of diagnosing and evaluating forest health betimes using xylophagous insects were posed. Mathematical models would be established based mainly on interactions between quantity of xylophagous insect populations and status of forest health, interspecific interactions (community structure, biodiversity) and environmental factors were also added as supplementary parameters, in order to quantitatively analyzing and comprehensively evaluating forest health and its developing trend.

本文综述了蛀干昆虫对寄主植物选择机制和规律的国内外研究进展及其在森林健康评价中的应用前景，根据蛀干昆虫中次期性种类总是与亚健康和衰弱林木相伴的规律，提出了利用蛀干昆虫早期诊断和评价森林健康的思路，以蛀干昆虫种群数量与林木健康状况的相互关系为主，辅以物种间相互作用关系、环境因子等建立数学模型，定量分析和综合评价森林健康及其发展趋势。

Department of forest sciences is primarily dedicated to education and research in forest sciences including developing forest ecosystem management, improving forecasts of forest growth and yield, designing cost-effective forest regeneration practices, natural resources management, biometeorology, soil microbiology and biochemistry, horticulture and agronomy, animal science.

森林科学系主要致力于森林科学的教育及研究，其科学领域包括发展中的森林生态系统管理，改良森林生长和生产量的预测，森林重建实践的成本有效设计，自然资源管理，生物气象学，土壤微生物学和生物化学，园艺和农学，动物科学。

To study the effect of nematode-induced forest succession on avian communities, we chose three forest types at different seral stages, including evergreen broad-leaved coppice infested by the pine wood nematode for five years and evergreen broad-leaved forest infested for 12 years, both from Xiangshan County, Zhejiang, and one 40-year-old evergreen broad-leaved forest from Tiantong National Forest Park, Zhejiang.

为了探讨在松材线虫侵袭所引起的森林演替过程中植被结构变化对鸟类群落的影响，我们研究了这此常绿阔叶演替林中的鸟类群落结构。2004年5-6月，我们在浙江省宁波市选择了分别处于3个不同演替阶段的7个样地：包括象山县被松材线虫侵袭5年后的常绿阔叶灌丛和侵袭12年后的常绿阔叶林样地各3个，同时在天童国家级森林公园选择了约40龄的常绿阔叶林样地1个。

According to the present situations of protected area in China and referring to the definition and category abroad, we suggested the forest natural protected area mainly include three types as follow: Nature Reserves (NR; types of forest eco-system), Forest Parks and Public Welfare Tree Farm. Researches of evaluation on ecotourism resources of forest natural protected area focused on two aspects basically: to appraise and account the ecotourism resources monetarily from the standpoint of pure economics; to assess the exploitability of ecotourism resources based on the theories of conservation biology and ecology, in which finding the reasonable equilibrating point between protection and: utilization was emphasized. On the studies of development pattern of forest ecotourism resources, it is necessary to deal with the relationship between protection and exploitation correctively, namely to put the protection as the first consideration and balance the "Tree r.1ajor Benefits" so that prompting the virtuous circle afforest ecotourism.

根据我国自然保护地的实际情况，参考国外自然保护地的定义与分类方式，可认为我国的森林自然保护地主要应主要包括森林生态系统类型自然保护区、森林公园及公益林场三种类型；森林自然保护地的生态旅游资源评价研究主要集中在两方面：一是单纯地从经济学角度对旅游资源游憩价值进行货币化评价与核算，二是从保护生物学和生态学角度对资源的可开发性进行评价，其侧重在于找到保护与开发的的科学平衡点；在森林自然保护地旅游资源的开发模式研究上，必须正确处理开发与保护的关系，把保护放在第一位，坚持"三大效益"兼顾的原则，才能实现森林生态旅游资源开发与保护的良性循环。

SFI is a public research institution of national importance, with a comprehensive research programme focusing on biological, ecological, silvicultural and spatial aspects of forests and forested landscape including forest ecology, forest physiology and genetics, forest protection, ecology of forest fauna and hunting, dendrochronology, dendroecology and dendroclimatology, forest inventory, remote sensing and geographic information systems in forestry etc.

该研究所是国家重点研究机构，主要致力于生物学、生态学、造林学和森林空间森林覆盖等领域的研究，其研究范围涉及森林生态学、森林生理学和遗传学、森林保护、森林动物生态学和狩猎、树木年代学、年轮水文学、年轮气候学、森林资源调查、森林遥感和地理信息系统等。

The experimental teaching centre of forest resource cultivation and conservation was set up, including soil and water conservation laboratory, desertification combating laboratory, forest cultivation laboratory, seed and seedling laboratory, landscape architecture plan room, forest genetics and breeding laboratory, forest management laboratory, forest protection laboratory, dendrology laboratory, among which specimen room acceded to Chinese Plant Specimen Museum Net and was registered and accepted by international plant taxonomy society, with the international code of GAUF.

其中树木标本室已加入中国植物标本馆网络，并被国际植物分类学会注册认可，国际代码为GAUF。

In the third chapter, the development path of the Chisese forest park was reviewed, the hidden trouble behind the forest park development was analyzed, the development direction of the Chisese forest park was pointed out. On this basis, considering the harm of the tourist peccancy and present situation of tourist peccancy management in forest park, the necessity and urgency of tourist peccancy management in forest park was expounded.

第三章简要回顾了中国森林公园的发展轨迹，分析了森林公园快速发展背后的隐患，指出了中国森林公园的发展方向，在此基础上，结合游客违章行为的危害及全国森林公园游客违章行为管理的现状，阐明了森林公园游客违章行为管理的必要性与紧迫性。

During the Last Interglaciation it was the forest, mainly composed of broadleaves, or forest-grassland at the east and middle part of the Chinese Loess Plateau, and was the forest-grassland at the west part of the Chinese Loess Plateau. It changed to the forest or forest-grassland at the most part of the Chinese Loess Plateau in the Holocene, some kinds of hardwood broadleaves dispersing at the warm temperate and the tropic zones appeared. Now the vegetation at the Chinese Loess Plateau inherits from that during the Holocene, the vegetation have been heavily destroyed owing to the human being actions. The vegetation protection at the Chinese Loess Plateau is a significant problem.

末次间冰期期间气候温暖湿润，黄土高原的中、东部地区主要发育了以落叶阔叶林为主的森林或森林草原植被，黄土高原西部地区主要发育的是以针叶林为主森林草原植被；全新世期间黄土高原的植被状况发生较大变化，黄土高原的大部分地区为森林植被或森林草原植被，植被中还有暖温带落叶阔叶林，并含有少量亚热带种属；现代黄土高原的植被主要还是继承了全新世以来的植被状况，但是由于人类活动的加剧，对黄土高原的植被产生了毁灭性的破坏，因此，如何保护黄土高原的自然植被是我们面临的一个严峻的现实问题。

The baihua forest park of provincial forest park, this project is a national industrial development policy, one is closely supported by national and local industry, twois natural and geographical conditions, historic natural landscape, attracted a lot of all the guests, There are baihua forest park is qingming martyr cemetery TaChun grave, but also people leave the concentration of sightseeing, Four is the baihua forest park also can be used as mount wudang, shennongjia, ancient prime tourist scenic spot of gold, five is the forest eco-tourism industry into forestry development planning.

百花山森林公园属省级森林公园，该项目一是紧扣国家产业发展政策，是国家和地方重点扶持产业；二是自然地理条件较好，自然景观古迹，吸引了不少的四方来宾；三是森林公园内有烈士陵园是人们清明踏春扫墓的集中地，也是人们休假观光的佳地；四是百花山森林公园也可作为武当山、神农架、古隆中景区旅游的黄金节点；五是森林生态旅游业已纳入林业发展规划。

The production moved off-Broadway to New York City, where she won the Joseph E. Calloway award for her performance, and was profiled in American Theater Magazine as one of ten young theater artists to watch.

生产提出过百老汇的新的纽约市，在那里她赢得了约瑟夫calloway奖，她的表现，并于异型在美国的战区杂志之一， 10战区的青年艺术家观赏。

It's a risk tradeoff, and I believe that adding test support code usually wins.

这是一个风险的权衡，我相信添加测试代码通常会占上风。