Effects of harvest intensity on the marketable organ yield,growth and reproduction of non-timber forest products(NTFPs):implication for conservation and sustainable utilization of NTFPs

Background:Non-timber forest products(NTFPs)are an important part of forest biodiversity,and the subsistence and trade of local people,especially in less developed countries.Because of the high ecological and economic value,NTFPs have faced the problem of over-exploitation,and the key to solve this problem is to determine the feasible way of sustainable utilization of NTFPs.Harvest intensity is one of the most important and easily controlled utilization factors,which can greatly influence the plant individual survival,growth and reproductive performances,and even the population structure and dynamics.Therefore,we chose two common and important NTFPs species with different marketable parts(i.e.,Acanthopanax senticosus with tender leaves and Aralia elata with tender buds)as our study objects.Aiming to determine the optimum harvest intensity for sustainably utilizing both NTFPs species,five levels of harvest intensity treatments(i.e.,control,light,medium,high and severe)were designed to assess the effects of harvest intensity on their marketable organ yield,plant growth and reproductive performances.Results:The biomass growth rates of marketable organ and plant growth of A.senticosus under light harvest intensity treatment were significantly higher than those under other harvest intensities.The plant height growth and 1000-seed weight of A.elata under severe harvest intensity treatment were significantly lower than those under control treatment.Conclusions:The light harvest intensity with 25% leaf removal and the high harvest intensity with all terminal buds harvested are the optimum harvest intensity to maintain the sustainable utilization of A.senticosus and A.elata,respectively.These findings could provide managers with basic but practical guidance for making decisions about the sustainable harvest management plan for the cultivated NTFPs species,and further provide a theoretical basis for managers to establish the harvest regulations for wild NTFPs species.Consequently,the local residents or communities can improve their income while ensure the sustainable development of wild NTFPs.

Contribution of non-timber forest products to the livelihoods of the forest-dependent communities around the Khadimnagar National Park in northeastern Bangladesh

Non-timber forest products(NTFPs)play a significant role in the improvement of the forest-dependent people’s livelihoodsaround the world,strengthening protection for the sustainable use of forests.The purpose of this research was to evaluate the influence of occupational category-wise(fuelwood collectors,farmers,small-scale businessmen,day labourers,and tea estate labourers)dependencyon NTFPsand the role of NTFPs on household income around the Khadimnagar National Park(KNP)in northeastern Bangladesh.In 2014,178purposively selected respondents from four villages(out of 22 villagesaround the KNP)were interviewed face-to-face using a semi-structured questionnaire.The study observed that these forest-dependent communities utilized resources of the KNP mainly for domestic energy supply,household income,and house construction.Results showed that income from NTFPs made a significant contribution to family income.Income data analysis indicated that small-scale businessmen earned relatively more income from NTFPs,followed by tea estate labourersand day labourers.The study revealed significant negative relationships of the distance of households from the forest with the amount of NTFPs collected(P<0.01)and monthly income from NTFPs(P<0.01).Positive significant relationships were found between the amount of NTFPs collected and the time spent in NTFP collection(P<0.001),as well as betweenmonthly income from NTFPs and family size(P<0.001).The fuelwood collectors and farmers collected significantly greater amounts of NTFPs per trip(P<0.001)than other occupational categories.The households that were moderately to highly dependent on NTFPs collected significantly higher amounts of NTFPs pertrip(P<0.01)than the households that were moderately dependent and less dependent on NTFPs.Community dependence on KNP’sresources,community’sappreciation of the KNP’s ecosystem services for villagers’livelihoods,and community’s high levels of concern for forest conservation provided a foundation for the sustainable management of the KNP.The study findings will be useful for designing an effective forest management plan and policy for NTFP management and forest conservation with the active involvement of the forest-dependent people in northeastern Bangladesh.

Impacts of the Benefit Sharing Mechanism(BSM)Policy Implementation on Forest Protection and Sustainable Use of Non-timber Products at Bach Ma National Park

This study aimed to evaluate the impacts of the benefit sharing mechanism(BSM)pilot policy on sustainable use of non-timber forest products(NTFPs)and natural resources conservation in co-management forest of Bach Ma National Park.Evaluation methods were route and permanent plot survey,household interview,in-depth interview,village meeting,group discussion and workshop at commune level.Results showed that:(1)the BSM policy had brought favorable conditions for local people in sustainable use and development of the NTFPs,as well as minimised the threats to biodiversity in co-managed forest;(2)the harvest amounts of seven selected NTFPs after two years of the BSM policy implementation were higher than growth rate of every NTFP and the permitted harvest amounts of the benefit sharing plans(BSP);(3)although there was a risk of over-exploitation of the NTFPs,the annual yields in 2013 and 2014 were much lower,but more sustainable than that before the BSM implementation;(4)the forest protection status in the co-management areas was also better than before.Additionally,this study has also defined and recommended that in order to continue the BSM,it is necessary to ensure the sustainable exploitation of NTFPs,as well as implement more enforcement activities inside the co-management forest area.

Evaluating the Potential Contribution of Non-timber Forest Products (NTFPs) to Smallholder Farmers in Semi-arid and Arid Regions: A case of Chivi, Zimbabwe

Food insecurity in most dry regions in Zimbabwe has taught many people a lesson of using non timber forest products(NTFPs)to reduce food insecurity and improve livelihoods as well as poverty alleviation.The aim of the study was to evaluate the potential contribution of non-timber forest products to smallholder farmers in arid and semi-arid regions.The research was carried out as a survey and data was collected using interviews,questionnaires and focus group discussion.Data was analysed for descriptive statistics using IBM SPSS version 25.Results indicated that 64%were females and 36%were males with the majority of participants being married(57.6%)with only 8.8%being widowed.Results show that all respondents(100%)indicated that they obtain fruits from the forests as a major source of food during winter and rain season.Vegetables(84.2%),thatching grass(80.8%)and edible worms(62.5%)were also major non-timber forest products obtained from the forests by participants.All participants(100%)indicated that income generation,firewood and source of heat for brick moulding were major benefits they obtain from forest with vegetables(74.2%),brooms(91.7%)and improved nutrition(85.0%)being regarded as other important benefits enjoyed by local people from forests.Afforestation and reforestation were regarded as major sustainable forest management practices by all(100%)participants with agroforestry being indicated by only 12.5%since people had no knowledge about it.NTFPs has capacity of improving food security,human livelihoods and alleviate poverty.People are encouraged to harvest NTFPs sustainably to allow future use.Use of agroforestry can be a best way for managing forests sustainably,improve food security,crop yield,poverty alleviation and climate change mitigation.

Riverscape Approach and Forestry Interventions for Ganga River Rejuvenation

Rivers have been degraded globally due to various reasons over centuries and limiting their ecological health and value, including Ganga River in India. Riverscape approach can provide relevant information on riverine resources needed in river restoration programmes. We propose a conceptual riverscape model to rejuvenate the holy river Ganga in India through forestry interventions after due consideration of ecological processes, mosaic of landforms, communities and environment within the large landscape of Ganga basin. The select riverscape area includes the area of 5 km and 2 km on either side of the river Ganga and important tributaries, respectively, all along the rivers in five stakeholder states of Uttarakhand, Uttar Pradesh, Bihar, Jharkhand, and West Bengal in the country. The width of the riverscape was taken from the maximum bank line in recent years on either side of river in the concerned state. However, all micro-watersheds in the hills of Uttarakhand state, being the origin place of river, have been included in riverscape area up to Haridwar. Here riverscape is a mosaic of different land uses viz., natural ecosystems, rural and agricultural ecosystems and built-up urban environment including flood plain and is an ecologically sustained system developed during the last 30 years due to river meandering all along the river. Geospatial modelling and GIS data on land use pattern, soil erosion rates, slope of the topography, etc. were used to classify riverscape area into high, medium and low priority areas to implement forestry interventions in delineated riverscape. Thereafter, forestry interventions were planned and carried out in three identified landscapes viz., Natural (forests), Agriculture (agroforestry), and Urban along with conservation activities. Forestry interventions in delineated riverscape are expected to increase water recharge and decrease the sedimentation load in the Ganga River and its tributaries.

Delivering forestry courses online:experiences,lessons learned,and future of forestry online education in the Asia Pacifi c

Innovation in forestry education is needed to address changing contexts of the positionality of forests.This is particularly signifi cant in the Asia–Pacifi c region,where deforestation and degradation are high.However,the accessibility of high-quality forestry education to address changing regional and global contexts is lacking.A series of innovative sustainable forest management(SFM)open education resource(OER)courses were developed and implemented to improve the accessibility of SFM education to enhance teaching quality,curriculum,and research capacity of universities in the Asia-Pacifi c Region.To evaluate the SFM-OER program in terms of student experiences,this study investigated student achievement,perceived success of the pedagogical approach and instructional design,and perceived eff ectiveness of the learning activities in promoting active and transformative learning through the assessment of a 1,191-course feedback survey between 2018 and 2020,including the global pandemic.This study revealed that the program attracted diverse student demographics,including a higher proportion of female students majoring in forestry,ecology,and other environmental studies.Their primary motivation to participate in the courses was to gain international experience,followed by the fl exibility of online learning,mandatory course requirements,and earning course credits.Students were satisfi ed with the Canvas learning management system.Most students spent less than 5 to 10 h of their weekly time in the course and agreed or strongly agreed that the workloads were manageable.Students refl ected positively on various learning activities and assignments,such as watching lecture videos,taking quizzes,reading and summarizing,having discussions,and peer review writing.However,they did not clearly prefer specifi c learning activities,signifying the importance of using diverse learning activities to satisfy diverse individual learning styles in online settings.This analysis contributes to the further development of student-centered pedagogical development for online learning and provides insight into the ways forward for online higher forestry education,while repurposing existing OER courses in a post-Covid-19 era.

Countermeasures for the Protection and Sustainable Development of Forestry Resources

Firstly,the problems of the protection and sustainable development of forestry resources were analyzed,such as lack of overall planning for the protection of forestry resources,insufficient investment in the protection of forestry resources,etc.Afterwards,the corresponding countermeasures were proposed,such as making overall planning for sustainable forestry development,increasing the investment in the protection of forestry resources,improving the forestry management system,etc.

Forestry Interventions and Groundwater Recharge, Sediment Control and Carbon Sequestration in the Krishna River Basin

It is a known fact that human activities have a significant impact on global rivers, making the task of rehabilitating them to their former natural state or a more semi-natural state quite challenging. The ongoing initiative called “Rejuvenation of Krishna River through Forestry Interventions” aims to contribute to the overall river rejuvenation program in the country. In this context, the effects of forestry interventions on the Krishna River will be evaluated based on water quantity, water quality, and the potential for carbon sequestration through plantation efforts. To assess the outcomes of this study, various methodologies such as Soil Conservation Service Curve Number (SCS-CN), Central Ground Water Board (CGWB) and Intergovernmental Panel on Climate Change (IPCC) have been utilized to estimate water savings, reduction in sedimentation, and carbon sequestration potential within the Krishna basin. The projected results indicate that the implementation of forestry plantations and soil and moisture conservation measures in the Krishna River rejuvenation program could lead to significant improvements. Specifically, the interventions are expected to enhance water recharge by 400.49 million cubic meters per year, reduce sedimentation load by 869.22 cubic meters per year, and increase carbon sequestration by 3.91 lakh metric tonnes per year or 14.34 lakh metric tonnes of CO2 equivalent. By incorporating forestry interventions into the Krishna riverscape, it is anticipated that the quality and quantity of water flowing through the river will be positively impacted. These interventions will enhance water infiltration, mitigate soil erosion, and contribute to an improved vegetation cover, thereby conserving biodiversity. Moreover, they offer additional intangible benefits such as addressing climate change concerns through enhanced carbon sequestration potential along the entire stretch of riverine areas.

Research on the Construction of Entrepreneurship Course Clusters for Students in Agriculture and Forestry Universities

Curriculum construction is the key factor in determining the quality of education.The innovation and entrepreneurship course clusters have effectively upgraded entrepreneurship courses in terms of talent cultivation,resource integration,and educational practice.In response to the existing problems and difficulties in the construction of entrepreneurship course clusters in agricultural and forestry universities,suggestions and measures are proposed from macro-,meso-,and micro-level perspectives to reach a consensus on entrepreneurship education,construct interdisciplinary course clusters,and improve the quality and effect of education implementation.This provides a reference for agricultural and forestry universities to construct high-quality entrepreneurship course clusters.

燃烧热测定实验的课程思政设计——农林废弃物的热值测定

燃烧热测定是一个经典的物理化学实验。本案例将燃烧热测定与农林废弃物燃烧发电对接,对实验内容进行了适当调整,让学生了解燃烧热测定对保障发电厂安全运行的重要意义,以及农林废弃物燃烧发电对服务“三农”、乡村振兴和“双碳”战略的重要意义,提高了学生学以致用的能力,激发了学生的学习兴趣,引导学生关心国家能源安全、环境保护、可持续发展和人民的生命健康,对提升学生的能力和素质发挥了良好作用。

提升林业工程类本科专业创新教育水平的探究与实践——以东北林业大学为例

目前我国林业工程类本科教育仍存在重知识轻实践、科教融合不密切、创新氛围不浓厚、创新教育方法缺乏、学生创新意识不够强烈等问题。为了提升高校创新教育水平,助力“林业工程”一流学科建设、服务行业创新驱动发展,以东北林业大学林业工程类本科专业的创新教育实践为例,从创新教育课程体系设置、提升学生创新意识、培养学生良好的科研素养、增强学生的社会责任感等方面提出了创新教育的改革对策,并列举了林业工程类本科专业的创新教育实践成果,阐述了创新教育改革取得的成效。

“十三五”国家重点研发计划“林业资源培育及高效利用技术创新”重点专项布局与实施成效分析

“十三五”国家科技计划改革构建了全新的国家重点研发计划,设置“林业资源培育及高效利用技术创新”重点专项对林业科技创新进行支持。在揭示林业资源培育及高效利用调控机制、提升主要人工林单位生产力和提高资源利用效率等方面进行布局,按照基础研究、关键技术研究和技术集成示范进行“产业链布局创新链、一体化组织实施”。截止到2022年,专项已经执行结束并顺利完成项目综合绩效评价。以“十三五”国家重点研发计划“林业资源培育及高效利用技术创新”重点专项为主题,总结并分析专项实施背景、立项情况并介绍专项实施成效,为今后林业科技资源配置和组织管理提供参考。

美国现代荒野保护运动的兴起和早期发展

美国现代荒野保护运动兴起于两次世界大战之间。它以美国社会主流荒野观的变化为背景,直接促成因素是汽车旅游的普及对荒野构成了威胁。在奥尔多·利奥波德和罗伯特·马歇尔等荒野保护主义者的推动下,联邦林务局在该时期推出了一系列保护荒野的举措,通过制定行政法规等方式,将一些荒野区纳入保护。该时期的荒野保护是由白人“精英”发起的,要保护的主要是荒野的审美娱乐和精神文化价值。两次世界大战之间的荒野保护是在19世纪末20世纪初兴起的自然保护主义的基础上发展起来的,而二战后荒野保护的发展也并非完全是环境主义影响的结果,它实际上是此前的荒野保护运动在二战后的延续和深入。两次世界大战之间的荒野保护在美国现代荒野保护史上占有重要地位,它为二战后的荒野保护奠定了思想和组织基础,提供了重要的立法先例。

基于直线检测的航向角误差校正方法

提出了一种基于直线检测模型的多传感器数据融合航向角随机误差校正方法,旨在提高农林环境下低成本传感器组成的定位平台的精度。该方法通过调整直线检测阈值来实现状态的动态调整,以提高导航系统的鲁棒性和精确性。再将多传感器数据通过卡尔曼滤波融合,实现航向角随机误差的校正。试验结果表明,该方法在不同路径和速度下能有效降低航向角误差提高定位精度。在直线行进试验中,本方法的定位精度保持在5cm以内,航向角误差在5°以内。在矩形行进试验中,本方法的轨迹与差分RTK方法相近,平均误差仅为2.7cm,标准差为3.9cm。这一航向角校正方法为农业机械和车辆环境中的自主操作提供了有力支持。它能够适应不同的环境条件,提高导航系统的性能和测量准确性。

环境规制对林业绿色经济效率的影响

以2005—2021年《中国统计年鉴》、《中国林业与草原统计年鉴》、《中国林业统计年鉴》、《中国人口和就业统计年鉴》、《中国环境统计年鉴》等省级的时空二维数据为数据源(个别缺失值采用线性插值法进行补充),以数据相对完整的中国30个省、自治区、直辖市的林业绿色经济为研究对象。以林业绿色经济效率为评价指标(可分为规模经济效率、纯技术经济效率),采用林分每公顷林木蓄积量、新造林面积、林业系统职工人数、林业固定资产投资额作为投入指标,以期望产出(林业总产值、林业产业高级化指数)、非期望产出(林业生产的二氧化碳排放量)作为产出指标;以环境规制为直接影响因素,从推式和拉式两个维度进行选取,推式环境规制指标选取环境污染治理投资完成额、生活垃圾无害化处理率、工业固体废物利用率,拉式环境规制指标选取环境基础设施建设投资完成额、造林面积占比、建成区绿化覆盖率;以林业社会保障、国家投资、灾害防治率、林业技术创新、劳动力受教育程度、城镇化、林业集聚度、交通密度为间接影响因素;结合评价指标和影响因素,构建评价指标体系。应用依据松弛值测算的超效率(SBM)模型、空间自相关模型、空间计量模型,分析环境规制对林业绿色经济效率的影响。结果表明:林业绿色经济效率,整体上呈现东高西低的趋势,并且具有正向的空间溢出效应;环境规制对本区域及相邻区域林业绿色经济效率影响的相关系数,分别为-0.0594、-0.0781,环境规制提升对邻近地区林业绿色经济效率的抑制作用相对本地区更大;林业绿色经济效率提升,更加依赖于规模扩张;环境规制与林业绿色经济效率之间具有“U”型关系。综合研究结果,建议:差异化制定环境规制、建立横向补偿机制、推动林业技术创新为引擎。

应用型本科高校信息素养教学改革的探索与实践——以林学专业为例

根据应用型本科高校培养创新型应用人才的教学目标,采用PBL、翻转课堂、案例教学等多种教学模式,将信息素养教育与林学学科相融合,借助问卷星及学习通平台收集调查问卷,获得教学评价。结果显示:信息素养的嵌入式教学实践对学生学习专业知识有明显促进效果,并得到大部分学生认可,为实现信息素养教学与其他学科专业教育一体化提供实践经验。

双碳目标下林业专硕人才培养探究——以安徽农业大学林业专硕为例

林业是我国生态建设和经济建设的重要组成部分,特别是碳达峰、碳中和理念的提出给林业赋予了新使命。以安徽农业大学林业专硕学生的培养为例,并结合“双碳”目标的实施,分析学生在培养过程中遇到的问题和挑战以及在提高专业技能和实践创新能力的同时如何结合“双碳”目标的实施进行改革,从而培养满足国家对林业绿色发展所需的高层次、应用型、复合型人才,满足“双碳”目标对社会高质量发展和生态文明建设的需要。

卓越农林人才“双循环”协同育人实践体系构建——以东北农业大学为例

培养卓越农林人才对加快建设农业强国,全面推进乡村振兴具有重要意义,而实践育人是高校培养卓越农林人才的重要环节。针对卓越农林人才培养实践中面临的实践育人内生动力不足、不同育人形式融合协同不足、实践育人资源整合不足等问题,构建卓越农林人才“双循环”协同育人实践体系,以期为高校卓越农林人才培养实践提供借鉴。

从“悔错字”文书看清代至民国清水江流域林业纠纷的调解

“悔错字”文书是贵州地方大型档案资料清水江文书中的重要内容,主要记载农林业生产、婚姻家庭等方面的纠纷调解,清代至民国时期大量遗存于清水江流域。通过整理与分析“悔错字”文书,文章着重对这一时期清水江流域林业纠纷的调解进行了探讨。这对于我们深刻认识调解林业纠纷的重要性,增强民族团结,稳定社会秩序,全面推进依法治国,建设平安中国,具有一定的借鉴价值。

城市昆虫传粉生境营建研究进展及思考

传粉昆虫是生物多样性重要组成部分,昆虫传粉生境建设能有效减缓植物授粉危机,有利于城市生物多样性保护和促进自然教育。文章通过检索文献库CNKI和Web of Science近20年相关文献,采用文献计量法、内容分析法,对昆虫传粉生境营建相关的规划与设计、建设与管理研究成果进行梳理。结果表明:规划方面,注重该类绿地与区域生态网络和城市专项规划融合;设计方面,强调植物选用遵循“双高”“本土”“多样化”原则,并采用“高密群植”“防风向阳”方式配置;建设方面,提倡保留多种地表,增加与雨水花园、绿色屋顶等生态景观布置和栖息设施举措;管理方面,建议纳入4种特色日常管理措施,并提出管理部门的政策支持能助力实现昆虫多样性目标。文章最后提出传粉生境营建研究还存在意义彰显不足、实践应用待加强,以及我国发展缓慢等相关思考,旨在对我国城市昆虫传粉生境营建与城市生物多样性保护提供研究参考。