The role of forest culture in green construction and management of forest parks:merging knowledge-attitude-practice and theory of planned behavior

As a cultural concept refl ecting the relationship between humans and forests,forest culture plays an active role in sustainable forest management.Forest parks provide a wide range of ecosystem services essential for the sustainable development of society,and the relationships between forest culture,green construction and management of forest parks have practical signifi cance.This study aimed to understand the interaction and process of forest culture infl uencing green construction and management in forest parks with the models Knowledge-Attitude-Practice(KAP)and Theory of Planned Behavior(TPB)by proposing a theoretical model.Four hypotheses were tested using data collected from 193 forest park employees in Heilongjiang Province,China.Our results show that forest culture had a signifi cant infl uence on green construction and forest management.In addition,subjective norm and perceived behavioral control directly impacted behavior in green construction and management of the forest park,whereas attitude did not have an impact.Subjective norm had a direct eff ect on attitude.Results between constructs show that forest culture had an indirect eff ect on planning and construction,and on ecological and economic management.Consequently,it supported three of four hypotheses within the proposed model in determining the infl uence of forest culture on green construction and management.

Study on Urban Forest Construction Concepts and Layouts in Taizhou City

Taizhou is an economically-developed port city on the golden coastline of China, characterized by typical coastal and combined green cores, mountains and waters, and special plants. This paper analyzed natural conditions and city features of Taizhou, assessed current construction of local urban forests, and proposed pertinent construction concepts in view of diversifi ed needs of urban development on forest construction. On the basis of the city development, principles of urban forest layout were put forward, and the overall structure of "one core, one belt, two rings, three corridors, four groups, fi ve windows, and multiple bases" was given for the construction of urban forest in coastal landscape cities, in addition, the effect and feasibility of the layout were analyzed.

Carbon emission risk of construction industry in Hebei Province of China based on carbon sink thresholds

In order to assess the environmental risks caused by carbon emissions from the construction industry in Hebei Province of China,an environmental risk assessment model based on forest carbon sink threshold was constructed to evaluate the carbon emission risks of the construction industry in Hebei Province,China from 2005 to 2020.The results are shown as follows:(1)The overall carbon emissions of the construction industry in Hebei Province of China showed an inverted"V"-shaped evolution trend during the past 16 years.Tangshan and Shijiazhuang maintained high carbon emissions,while Langfang,Hengshui and Baoding saw rapid increases in carbon emissions.(2)The environmental safety threshold of carbon emission from the construction industry in Hebei Province,China,has been continuously improved,and the provincial environmental safety threshold is between 9475080-23144760 tons;The environmental safety threshold was the highest in Baoding and Langfang,and the lowest in Xingtai.(3)In the past 16 years,the carbon emission risk of the construction industry in Hebei Province of China has been in a state of extremely serious risk,and the risk index generally presents an inverted"V"type trend.(4)The carbon emission risk of Hebei city in China presents a spatial pattern of"high in the south and low in the north",which goes through two stages:risk increase period and risk reduction period.

Oil and Gas Pipeline Construction-Induced Forest Fragmentation and Biodiversity Loss in the Niger Delta, Nigeria

The impacts of oil and gas pipeline construction on the forest and biodiversity in parts of the Niger Delta was investigated. This was achieved by studying the construction activities and operational phases of two pipelines with cumulative length of 165 km vis-à-vis the biodiversity of the affected area. The study involved field sampling along the RoWs to inventorize the fauna and flora, visual assessments and interview with locals. It was observed that the pipelines traversed moist lowland/freshwater swamp and mangrove forests, and barrier islands with approximately 4,950,000 m2 (equivalent of 495 hectares) of forest cleared and 9,642,000 trees killed to realize the pipelines. A total of 219 plant species in 66 families and 125 different fauna species from 64 families were recorded in these areas. Three out of the 4 recorded species of Meliaceae were threatened based on IUCN Conservation Status. Also based on IUCN Conservation Status, 20 mammals, including Pan troglodytes, Cercopithecus erythrogaster and Trichechus senegalensis, 7 birds, 2 reptiles and 1 amphibian were within threatened group. The results showed that the study area had witnessed colossal loss of biodiversity due to habitat displacement, forest fragmentation and deforestation, and escalated exploitation of species. The study identified the most affected biodiversity, and proffered measures to mitigate such occurrences.

Recommendations for Construction and Management of Ecological Public Welfare Forest in Hainan Province

This paper firstly evaluated ecological service functions of ecological public welfare forest in Hainan Province. Then,it introduced value structure and existing problems of ecological service functions. Focusing on optimization and adjustment of scale and distribution of ecological public welfare forest,it came up with recommendations for construction and management of ecological public welfare forest in Hainan Province.

Construction and Management of Public Welfare Forest in Hainan Province

Through investigating ecological service functions of public welfare forest in Hainan Province, this paper explored type constitution and problems of its ecological service functional value, optimization of its scale and layout, promoted effective protection and benign development, and proposed strategies for the construction and management of public welfare forest in Hainan Province.

Rehabilitation of Semi-mountainous Forest Area Using Bioclimatic Forest Constructions in Greece

Forest constructions are structures erected for serving the forest exploitation and utilization of its products,including recreation.The construction principals of a standard forest village with wooden lodgings apply principles of bioclimatic design and use ecological building materials.It highlights the area and helps to maintain the natural beauty of the forest.Accurate analysis of the area of the forest village requires the creation of topographic plan with great precision.Topographical drawing in AutoCAD in coordinate system HGRS’87 with contour interval 2 meters with the help of geodetic GPS was created.The aim of this paper was the rehabilitation of a semi-mountainous area taking into consideration environmental,economic,ergonomic and architectural constrains with the help of Google Earth.The area of the camp outside the village of Dadia of Evros Prefecture was granted by the army to the Forest Office of Soufli and remains unexploited until today.The installations were recorded and shown together with the topographic diagram and an image from Google Earth for the understudy-area.All the proposed facilities are presented in a Google Earth image and in a three-dimensional view.The forest village will be composed of 20 wooden lodges with a capacity of 4 persons each.The lodges will be designed around the bioclimatic design,in order to exercise the least impact on the natural environment and to meet the needs of residents for a comfortable and relaxed living.The landscaping was based on better utilization and lower environmental cost of construction in the landscape.

On Construction of Ecological Economic Forests

To consolidate the results of returning cukivated land into forests and realize sustainable development, it is an important way to develop ecological economic forests at a reasonable scale. At the same time, with the improving quality of people＇s lives, we must pay attention to production of pollution-free green fruits. This paper, from the point of ecological economics, takes the example of date trees for example, presenting the connotation of ecological economic forest and main construction technologies, in order to provide basis for the industrial development after returning cultivated land into forests.

Coastal Protection Forest Construction Project

China’s coastal line starts at the Yalu River in Liaoning in the north and ends at the Beilun River mouth in Guangxi. It is 18,000 kilometres long and crosses 11 provinces, municipalities and autonomous regions, including Liaoning, Hebei, Tianjin, Shandong, Jiangsu, Shanghai, Zhejiang, Fujian, Guangdong, Guangxi and Hainan. In 1988, the Chinese government outlined the Coastal Protection Forest System Construction Project and defined the coastal line of 11 provinces as the main construction line. The project aims at developing a

Radcliffe’s Construction of Female Identity in The Romance of the Forest

The Romance of the Forest,first published in 1791,was Ann Radcliffe’s first and major success,establishing her reputa⁃tion as one of the masters of Gothic novels in the eighteenth century.Given that Gothic novel is socially conservative,its construc⁃tion of female character has long been in line with the deep-rooted notion of the“proper women”,under which circumstance Ann’s treatment of feminism through Adeline is utterly confusing to many.Thus,based on Edmund Burke’s aesthetics concept of picturesque and sublime,this paper conducts a detailed analysis of the landscape in the novel,in an effort to argue that Ann con⁃structs a mixed female identity,an identity stressing on both feminine sensibility and masculine rationality.

Study on Potential Problems of Shandong Economic Forest Construction and Standardization Construction Scheme

Shandong is a culturally powerful province with excellent natural geographical condition and the warm temperate monsoon climate creates abundant benefits to the agricultural development there.In 2009,Shandong administration bureau of Yellow River economic development held the forum on related issues of national new countryside industry office planning to build economic forest base around the Yellow River in Shandong.The primary intention was settled and the construction of Shandong Economic Forest was formally started.Although impressive progress has been achieved in recent years,there also exists potential problems in the construction of economic forest,among which heavy metal pollution and soil acidification are the worst,causing huge damage to the physiological health of the consumers of economic forest.The writer proposes the countermeasures against standardization construction of economic forest.Scientific management is to be adopted to improve the professional skills of the employees in economic forest and brand innovation should be emphasized to quicken the quality certification of the products of economic forest.Besides,standard production demonstration is to be created and promoted in order to boost scale development.Furthermore,mechanism innovation is also to be stressed and forestry specialized cooperation organizations should be largely supported.

Present situation and prospects of forest ecological network in Jilin Province, China

This paper makes a brief introduction of the ecological environment, forestry achievements, and the existing questions of Jilin Province. The task of forest ecological network and eight questions demanding prompt solution were discussed based on the present situation of forestry in Jilin Province. The author also made prospects for future application of bio-technique, infor-mation technology, new material technology and nuisance-free forest health technology in forest ecological network.

Prediction of maximum upward displacement of shield tunnel linings during construction using particle swarm optimization-random forest algorithm

During construction,the shield linings of tunnels often face the problem of local or overall upward movement after leaving the shield tail in soft soil areas or during some large diameter shield projects.Differential floating will increase the initial stress on the segments and bolts which is harmful to the service performance of the tunnel.In this study we used a random forest(RF)algorithm combined particle swarm optimization(PSO)and 5-fold cross-validation(5-fold CV)to predict the maximum upward displacement of tunnel linings induced by shield tunnel excavation.The mechanism and factors causing upward movement of the tunnel lining are comprehensively summarized.Twelve input variables were selected according to results from analysis of influencing factors.The prediction performance of two models,PSO-RF and RF(default)were compared.The Gini value was obtained to represent the relative importance of the influencing factors to the upward displacement of linings.The PSO-RF model successfully predicted the maximum upward displacement of the tunnel linings with a low error(mean absolute error(MAE)=4.04 mm,root mean square error(RMSE)=5.67 mm)and high correlation(R^(2)=0.915).The thrust and depth of the tunnel were the most important factors in the prediction model influencing the upward displacement of the tunnel linings.

Application of a Stereo Constructed Wetland Mode to the Treatment of Slightly Polluted Source Water

[Objective] The study aimed to discuss the application of a stereo constructed wetland to the treatment of slightly polluted source water. [Method] In this study, a new stereo constructed wetland mode was put forward, and a pilot project of water ecological purification in Xinsheng River, the diversion channel of Shijiuyang Waterwork in Jiaxing City, were analyzed. Afterwards, the impact factors of water purification by the technology were discussed from water quality and quantity, season and climate, species configuration, management and maintenance. [Result] Under three different hydraulic loading conditions, the pilot project effectively improved water SD and DO level, and reduced SS, CODCr, NH3-N, TN and TP significantly in summer and autumn, so that effluent water quality reached surface water standard at Grade III. [Conclusion] The stereo constructed wetland mode composed of constructed wetland and underwater forest used to treat slightly polluted source water is feasible and has a good promotion prospect.

Effect of performed operations management on the amount of sediment production in natural forests

The present study on the sediment production in natural forests was carried out on an 13,284 ha area,ocated in Guilan Province, in the north of Iran. This area is under intensive management. We first analyzed the physi- sal factors of the area. Then, the amount of road construction, afforestation and harvested wood volume, as well as the harvesting method in the region were determined for the years between 1993 and 2010. The results show that the aver- age annual amount of sediment production in the entire region, over this 18-year period, has increased annually at a rate of 3.54 t.km-2 （R2 = 0.56） at a confidence level of 95%. Operations management and management methods used in ：his forest area has affected the amount of sediment production. Clear cutting and extensive harvesting methods in the region caused an increase in the amount of sediment production, as indicated by a coefficient of determination of 0.71, mplying that forest management may be considered effective and in harmony with the environment.

Preference for Wood and Plastic-Based Ceiling Panels by Homeowners in Ghana： Implications for Tropical Forests Conservation and Prospects for the Local Wood Industry

This study investigated the preference for wood and plastic-based ceiling panels by homeowners in Ghana, the implications for the conservation of tropical forests and prospects for the local wood processing industry. Questionnaire was used to solicit information from 758 homeowners sampled from three cities in Ghana. The results showed that even though wood-based panels continue to enjoy strong patronage among home owners plastic-based panels appear to be the future material for ceiling. The findings suggest that, by 2030, homeowners in Ghana will use more plastic-based ceiling panels than wood-based panels, ceteris paribus. Attractiveness, durability and pleasantness are the key attributes of plastics that influence homeowners＇ decision to patronize the material. Additionally, the concern about the depletion of forest resources in Ghana has shaped homeowners decision to patronize plastic-based ceiling panels. While the shift to the use of plastic-based panels has the potential to moderate the consumption levels of timber and therefore could contribute to the conservation of tropical forests, it has a negative implication on the development of local wood processing industry. One area where manufacturers of wood products such as wood panels can explore in order to increase or maintain the market share of wood-based panel products is sourcing raw timber from certified forests.

Study on the planning principles of urban forest

The urban forest is the main body for the urban forestry management. There are not unified rules and standards for the planning of the urban forest yet in China. This paper discusses the planning principles of the urban forest： the priority of the ecological function, the adaptation to local condilions, the optimization in the whole system, the mutual dependence of forest and city, the culturecontinuance and recreation satisfaction, sustainable development and operability, etc. This paper takes Changsha as an example to elaborate the planning principles of the urban forest. Firstly, Changsba urban forest ecosphere is composed of the eco-garden, the round-the-city forest belt, the ecological isolation belt, the green channel, the landscape of the rivers and streams, the forest park, the biodiversity reserve and the eco-forest in suburb area. It aims to make every kind of ecological essential factors organically merge into the complex city ecosystem to build an eco-city, to strengthen the connection of wide-open space with various habitats spots, to promote resident＇s accessibility, to perfect landscape ecology, and to make full use of the ecological function of urban forest. When we construct the urban forest, we must optimize the comprehensive benefit and make the urban forest structure and the layout in the best condition in order to buiM the harmonious green city for both man and nature to realize the whole optimization of the city system by the complex functions of the urban forest in ecology, environmental protection, landscape, recreation, etc.

森林可持续经营和生态文明建设

2007年,党的十七大报告第一次明确提出了建设生态文明。习近平总书记继承发展了国内外已经积累的认识和经验,形成了习近平生态文明思想,比国际上有共识的可持续发展理念提高了一步,在认识上更深刻,在范畴上更全面,也更有利于贯彻落实。生态保护建设是生态文明建设的基础性工作,对生态保护和建设的关系必须要实事求是地、辩证地分析,既不能不重视自然保护,过多人为干扰,也不能以自然封禁作为绝对手段,不重视对自然生态系统兼用人为保育修复和建设的措施。“山水林田湖草沙是生命共同体”和“绿水青山就是金山银山”是习近平生态文明思想中的两个突出的理念亮点,山水林田湖草是区域层次生态系统的主要组分,习近平总书记“两山”理论中的“绿水青山”就是指良好的山水林田湖草自然综合体,需要处理好“绿水青山”和“金山银山”之间的关系。搞好自然生态系统的可持续经营是从“绿水青山”转变为“金山银山”的应有之义,这也是把可持续发展理念纳入到生态文明建设中来的关键。以森林生态系统为例,可持续经营就是在维持其可持续性的同时综合发挥其服务功能,在优先发挥其生态功能的同时还能取得一定的物质产品和文化产品,产生足够的经济效益和社会文化效益,只有这样,才能使“绿水青山”真正变为“金山银山”。

基于随机森林声波曲线构建的盾构机掘进路线预测

近年来,煤矿井下为了提高生产效率,将盾构机应用到巷道掘进中。地质条件是决定盾构机工作效率的重要因素,盾构机施工围岩以石灰岩、砂岩等中硬岩最为有利,因此拟掘进巷道位置的岩性预测成为提高盾构机工作效率的核心问题。目前地震反演是岩性预测的重要手段,阳泉新景区块由于部分声波测井曲线缺失,对波阻抗反演产生了影响,因此,如何利用已有的测井曲线生成缺失的声波测井曲线以及如何利用盾构机工作行进中的岩性揭露数据不断更新前方岩性分布预测结果成为当前亟待解决的关键。首先对测井曲线进行标准化等预处理,针对声波测井曲线缺失问题,引入随机森林回归算法,利用密度(Density)、自然伽马(GR)、视电阻率(Res)和自然电位(SP)4种测井曲线作为特征变量,建立曲线回归预测模型,预测声波(P-wave)测井曲线。在分析声波曲线和伽马曲线原理的基础上,进行拟声波曲线构建并做拟声波反演,在反演数据体上解释K7砂岩的顶和底界面,将解释得到的地震解释层位信息从时间域数据转换到深度域,经验证实预测结果与揭露数据符合率较高。同时,结合盾构机工作行进中的岩性揭露数据对目标巷道剖面的K7砂体分布预测进行了多次更新迭代,精细刻画了巷道位置K7砂岩的分布情况,为盾构机掘进路线优选提供了有效指导。

现代化生态文明建设中的林长制治理探析

林长制将保护发展森林草原资源落实为地方党政领导干部的主体责任,“属地管理,分级负责”作为一种重要的制度,是我国现代化生态文明建设不可或缺的组成部分。林长制以习近平生态文明思想为引领,具有特定的理论基础,全面推行林长制对现代化生态文明建设的意义重大。论文通过对林长制治理地方实践的考察,对标林长制有关法律法规、林长制职权范围、林长制考核和激励机制、林长制监督体系,分析林长制治理中存在的问题,最后提出了优化林长制治理的对策。