2011年赴古巴考察辣木种植的印象和体会

纪述2011年随国家农业部考察团赴古巴考察辣木产业的兴起和发展状况;提出我国辣木研发存在问题和建议。     

生产性景观设计与管理

近年来具有复合功能的生产性景观在城市环境建设过程中不断出现,为城市景观发展带来了新的活力,并为城市景观设计指引了新的方向。生产性景观是否适合在旅游休闲城市公共空间中应用?生产性景观在旅游休闲城市公共空间中应用会带来什么样的好处和问题?采用什么样的设计和管理途径能发挥生产性景观给城市所带来的好处而能避免由此而产生的问题?这些是本文重点讨论的内容。       

美国退耕还林工程及其启示*

美国的保护与储备计划 (CRP)类似我国正在实施的退耕还林工程 ,其自 1985年实施以来所积累的丰富经验和丰硕的研究成果对我国退耕还林工程具有重要的借鉴意义。文中介绍了有关 CRP管理、评价和确定退耕规模与补助水平的研究状况 ,最后得出了对我国退耕还林工程的几点启示。     

昆明市公园地被植物的调查研究

通过对昆明市公园地被植物进行全面实地调查,分析研究其种类多样性、生物学特性、观赏特性、应用频率、乡土地被植物应用现状,并针对昆明公园地被植物应用中存在的问题提出改进建议。     

大学生心理健康教育中“望闻问切”四诊法的运用

针对大学生心理健康状况持续下滑现状,提出了基于中医“望闻问切”四诊法把脉大学生心理的路径:细心“望”其有;耐心“闻”其声;真心“问”其想;准确“切”其脉,每个“诊”紧密配合发挥作用,对指导大学生心理健康教育实践具有重要意义。     

云南省薄壳山核桃种植现状及发展策略

在总结云南省薄壳山核桃种植历史的基础上,分析了薄壳山核桃发展的制约因素,并结合近年研究结果,提出了云南省薄壳山核桃发展的策略。     

湖北省湿地资源保护与研究进展

湖北省素有"千湖之省"之称,湿地资源丰富,现有湿地面积156.33万hm~2,占全省国土总面积的8.5%,湖北省湿地资源在全国占有重要地位。笔者总结了20世纪80年代以来湖北省湿地保护区建设与管理成就,并对湖北省湿地资源现状、湿地保护与恢复试验、湿地综合开发利用等研究进行了综述,在此基础上提出湖北省湿地资源保护与研究的优先发展方向。     

Variation in radial growth and wood density of Cyclocarya paliurus across its natural distribution

New Forests - As a multiple function tree species, Cyclocarya paliurus is planted and managed for timber production and medicinal use. However, it remains unclear to what extent geographical...     

石榴栽培技术理论研究进展

为了提高石榴的产量和品质,该文总结归纳了我国石榴品种、建园技术、施肥技术、水分管理、整形修剪及套袋技术等方面的成果和经验。针对当前石榴栽培技术研究中存在问题,提出今后石榴丰产栽培技术研究重点,旨在为今后我国石榴栽培种植及石榴产业的发展提供参考。     

中国重要工业用材树种分子遗传标记

中国重要工业用材树种分子遗传标记张绪纹,苏晓华（中国林科院林业所,北京１０００９１）１引言我国主要的针叶树种杉木、油松、落叶松、云南松、马尾松和重要的阔叶树种杨树、按树是重要用材树种,它们为我国林木生产提供了大量的胶合板材、纸浆材、建筑材以及包装材料...     

甘肃药用植物资源区域分布特征及保护利用

甘肃生态环境复杂多样,孕育了丰富的药用植物资源和大量独特的地道药材,中药材资源、产量均居全国前列。但由于投入严重不足、科技力量薄弱、研发能力较低、产品质量不高、开发保护和基地建设滞后等原因,资源优势没有形成产业优势。只有通过加大管理和保护力度,稳定和丰富中药材资源;加大扶持、服务、技术公关和资金投入力度,推进规范化种植和基地建设,促进中草药规模化、产业化;加强地道中药材原产地保护,提升甘肃中药材产业竞争力,实现甘肃药用植物资源的永续利用和可持续发展。     

Socio-economic factors affecting smallholder tree planting and management intentions in Leyte Province,Philippines

Survey data have been collected from four rural communities in Leyte Province, the Philippines, on household tree planting and management intentions, as well as the socio-economic characteristics, attitudes to tree planting and management, farming practices and the number of trees planted. In relation to intended tree planting and management activities, respondents were asked a series of structured questions as to what tree species they intend to plant, how many individual trees of each of those species they plan to plant, and for what purpose they propose to plant each of the tree species. This paper reports the results of analyses of the stated tree management intentions of households in the four communities and identifies the socioeconomic factors that influence householders’ tree management intentions. Respondents were generally enthusiastic about the possibility for further tree planting on their land, 75% indicating they would undertake planting. About 60% indicated an interest in commercial tree farming, with no significant differences in this level of interest between communities. It was found that a number of socio-economic variables indicating higher levels of land ownership and previous experience in the forestry industry are related to the intention to plant trees to produce timber for sale. These include the use of materials from public lands, participation in community organisations and community forestry programs, and the present management of trees to produce timber for sale.     

澳大利亚的森林资源与林业政策

评述了澳大利亚森林资源与林业政策过去10年的变化、现状和发展趋势。澳大利亚提出人工林发展规划——《2020年展望》,到2020年将现有人工林面积从110万hm2增至320万hm2,其中80%为针叶树,20%为阔叶树。为实现这一目标所采取的措施包括增加人工林用地,实行恰当的商业刺激,建立人工用材林栽培制度。其中最重要的,是将树木所有权与土地所有权分开,保证造林者的收获权。澳大利亚鼓励在雨量较少、土地退化和有利于生物多样性保护地区发展农场林业。根据国家林业政策声明,1997年联邦政府与各州政府在广泛调查研究与咨询受益者基础上达成地区森林协议,目的在于保护森林使之能够为当代和子孙后代提供环境、社会、经济和自然遗产的全部价值,保证获取木材资源和森林工业的继续发展,体现澳大利亚进程的主要精神和成就。     

我国人造板机械发展现状,存在的问题及调控措施

介绍了我国人造板机械的发展历史，现状及发展趋势，指出目前国产主要设备基本可满足生产要求，工艺渐趋成熟，并分析了存在的主要问题及应采取的调控措施。     

美化园林的红叶树种

红色叶树种是园林彩化景观的主要原材料之一,在园林中起着重要的美化、调色作用。本文阐述了红色叶树种的范畴,分析了红叶的成因,研究了红叶树种资源特点和观赏特性,为红叶树种在园林中的应用提供了理论指导。     

Effects of semi-isostatic densification of wood on the variation in strength properties with density

The variation in strength properties with density was compared between semi-isostatically densified and non-densified wood. Strength properties were compared with published data from earlier studies using other methods for densification. Small clear specimens of eight species were analysed for compression strength in axial, radial and tangential direction, three-point bending and Brinell hardness. After densification, all tested strength properties increased with density, but especially strength perpendicular to grain became lower than expected from the density of non-densified wood. Strength of densified wood relative to what could be expected for non-densified wood of similar density was denoted as ‘strength potential index’. For axial compression strength and bending strength, strength potential index of individual wood species varied between 0.7 and 1.0, i.e. densified wood is slightly weaker than what could be expected from its density. Strength potential index was lower for properties much determined by strength perpendicular to grain. In radial direction, densified wood was rubbery with low modulus of elasticity and nearly no proportional limit or modulus of rupture. Generally, wood was apparently weakened in proportion to the degree of compression in respective direction. Strength potential index also increased with increasing original density of the species.     

修剪促进红松无性系种子园母树开花效应研究

为增加红松无性系种子园母树雌雄花开花数量,对母树进行了树冠修剪和切根修剪试验。结果表明,适宜强度的树冠修剪和切根修剪,对增加红松母树雌雄花开花数量有显著作用。     

南方山地型森林公园建筑的自然生态化设计

森林公园中建筑风格的城市化、异域化、精品化已经成为影响森林公园吸引力的主要因素之一 ,更为严重的是这些建筑破坏了森林公园的自然原生性 ,形成视觉污染 ,有些还对生态环境造成了破坏。这里就建筑如何与自然环境协调及降低生态干扰进行了分析     

Effects of land reclamation practices on the productivity of young trembling aspen and white spruce on a reclaimed oil sands mining site in northern Alberta

New Forests - Identifying the main drivers of tree height growth on reclaimed oil sands sites of northern Alberta can provide useful information on what can be done to shorten the recovery time of...     

青年毛泽东读书学习的两种境界

以青年毛泽东读书学习为切入点,通过追寻一代伟人毛泽东青年时代读书学习的足迹,探求毛泽东走向成功的内在驱动力.毛泽东一生嗜书如命,读书是他成为世界伟人的必不可少的条件.文中对青年毛泽东为什么选择社会科学作为主攻方向,这与他的成功有什么关系等问题作了有价值的理性思考,给人启迪.阐述了青年毛泽东读书学习的两种境界:第一种境界明确了读书目的,解决了"为什么读书"的问题;第二种境界解决了"读什么书"才能实现目的的问题.