国外发展私有林主协会的启示

文中介绍了国外私有林主协会的发展状况和职能,认为私有林主协会的产生和发展具有一定的主客观条件,具有充分的法律依据,协会内部管理科学,林主协会与政府是合作关系,协会具有降低林主生产成本、增加林主收益、提高林主生活质量、促进森林可持续经营、增加就业等作用。建议,在我国政府不宜主导建立林主协会,应该尊重林农意愿,从法律和政策上规范林主协会;对于现有的林业社会化服务组织和经济合作组织,应该规范管理。

国外林主合作组织发展新动向与启示

根据近年来国外林主合作组织的发展新动向,简述了转型国家目前积极构建林主合作组织的途径和发达国家林主合作组织持续发展的问题,并阐述了国外林主合作组织在林业新兴市场(认证市场和碳市场)的参与动态,以及当前在促进农村社区发展和参与林业政策进程中的重要作用;进而总结当前国外林主合作组织的地域发展格局和业务与作用拓展的新特点与新方向;最后针对中国林农合作组织的构建与发展提出几点启示。

芬兰、瑞典私有林与扶持政策考察报告

芬兰、瑞典的私有林占据主导地位,私有林在森林资源经营管理中占据重要地位。介绍了芬兰、瑞典林业基本情况,两国的私有林主为维护自身利益而逐步建立了私有林合作社和林主协会,政府制定相应的扶持政策,这些均值得我国目前进行的集体林产权制度改革引以借鉴。

我国林业工程项目和资金管理机制的探讨

立足我国林业实际,提出我国林业项目主体和林主的概念,以及林业项目管理机制创新思路,针对林业项目和资金管理现状提出了改进措施,主要包括更新项目规划理念、改进项目规划设计,改革项目和资金管理制度,充分调动林主的积极性等,以期为林业工程项目的建设和资金管理提供帮助。

Detecting Global Vegetation Changes Using Mann-Kendal(MK) Trend Test for 1982–2015 Time Period

Vegetation is the main component of the terrestrial ecosystem and plays a key role in global climate change. Remotely sensed vegetation indices are widely used to detect vegetation trends at large scales. To understand the trends of vegetation cover, this research examined the spatial-temporal trends of global vegetation by employing the normalized difference vegetation index(NDVI) from the Advanced Very High Resolution Radiometer(AVHRR) Global Inventory Modeling and Mapping Studies(GIMMS) time series(1982–2015). Ten samples were selected to test the temporal trend of NDVI, and the results show that in arid and semi-arid regions, NDVI showed a deceasing trend, while it showed a growing trend in other regions. Mann-Kendal(MK) trend test results indicate that 83.37% of NDVI pixels exhibited positive trends and that only 16.63% showed negative trends(P < 0.05) during the period from 1982 to 2015. The increasing NDVI trends primarily occurred in tree-covered regions because of forest growth and re-growth and also because of vegetation succession after a forest disturbance. The increasing trend of the NDVI in cropland regions was primarily because of the increasing cropland area and the improvement in planting techniques. This research describes the spatial vegetation trends at a global scale over the past 30+ years, especially for different land cover types.

Under the Veil of Science Fiction： Katniss＇ Initiation in the Hunger Games Trilogy

The success of the Hunger Games trilogy to the young readers is its distinctive blending of science fiction elements with protagonist Katniss＇ initiation. The trilogy suffices youth＇s interest to embrace a fiction that dramatizes both realistic and fantastic portray of the world. Through depicting the intellectual and social development of protagonist Katniss who, after experiencing both defeats and triumphs in a dystopian world, Suzanne Collins successfully conveys the coming-of-age theme under the veil of science fiction in the Hunger Games trilogy.

Stem Borer Species Composition on Maize and Two Non-Cereal Hosts in the Forest Zone of Kisangani, DRC

Lepidopteran stem borers are the most damaging pests of maize in Sub-Saharan Africa. Despite the growing importance of maize in the forest zone of Democratic Republic of Congo, no data is available regarding stem borer pest species present and their relative importance. It is thus important to gather information likely to guide future research in this area. This study was undertaken to catalogue stem borer pest species identity and assess their relative infestation levels on maize. Surveys were carried out in wild and cultivated habitats in Kisangani. Five species were collected on maize, i.e., Sesamia calamistis Hampson （1910）, Eldana saccharina Walker （1865）, Busseola fusca Fuller （1901）, Chilo sp. Strand （1913）, and Mussidia nigrivenella Ragonot （1888）. In the wild habitats, Poenoma serrata Hampson, B. fusca and S. calamistis were collected on Pennisetum purpureum whereas Chilo sp. was collected on Panicum maximum. Our results suggest that P. maximum might affect the population dynamics of Chilo sp. whereas P. purpureum is expected not to influence the population dynamics of other stem borers owing to its scarcity in the interior of the forest.

Primary Host Tree Species of the Gypsy Moth Lymantria dispar （Lepidoptera： Lymantriidae）in Hyrcanian Forests

Invasions by exotic insects and diseases are one of the most important threats to the stability and productivity of forest ecosystems around the world. Lymantria dispar （Lepidoptera： Lymantriidae） in Iran was observed for the first time in 1937 by Jalal Afshar in oak forests of the Guilan state region. Since its introduction, gypsy moth has spread to the northern, western and south-western regions of Iran. The largest outbreaks of gypsy moth occurred in the Talesh Oak forests of the Hyrcanian zone in 1975. The gypsy moth is a highly polyphagous folivore species that feeds on over 300 species of woody plants. Among its most preferred hosts are oaks and aspens. Some trees are resistant to the gypsy moth including honey locust, black locust, silver maple, green ash, dogwood, sycamore, horse chestnut, firs, and tulip trees. Defoliation during severe outbreaks alters the appearance of forest habitats and leads to tree mortality and changes in stand composition. This study was conducted during 2008 and 2009 in an effort to determine the primary host tree species that the gypsy moth infests in the Hyrcanian forests of lran. For that purpose all egg masses in the area were counted and conclusively significant differences in defoliation levels among tree species were found. The primary host tree species of gypsy moth in Iran was Persian ironweed, Parrotia persica.

Salafism in Azerbaijan

The article is written with the support of Shota Rustaveli National Science Foundation and is based on the materials obtained in Azerbaijan relating to the spread of Salafism in Azerbaijan, the interviews with A. Shirinov, an associate professor at the faculty of Theology at Baku State University, S. Hasanli, a rector of Baku Islamic University and G Suleymanov, a leader of Azerbaijan Salafi community, which were recorded during the scientific visit in Azerbaijan.

Influences of Agricultural Practices in the Canton Erde-Pala Chad Vegetation

The study, conducted in the Canton Erd6-Pala Chad, aims to i） list the different cultural practices, ii） study their impact on the vegetation and iii） determine the methods of co-management of these cultural practices. The surveys were realized on 50 households in the village and phytosociological plants in corn, millet, cotton and peanuts cultures. The data analysis by statgraphic and Excel and Principal Component Analysis （PCA） showed that maize production （1,200 kg/ha） ranked first at the expense of cotton （640 kg/ha）. They negatively affect climate change （temperature increase （26%）, rain drop （20%）, land reclamation （18%） and flooding （12%））. Surveys of vegetation on three acres cotton fields （76.17%）, millet （81.06%）, corn （80.32%） and groundnut （83.56%） showed that there is no significant difference （P = 0.05） on the specific contribution of wood of different types of farming practices. Adventists species herbacious like Thelepogon elegans （27.84%）, Hyptis spicigera （19.31%）, Teramnus labialis （15.86%） have most important contributions in specific cultures. Methods of crop treatments have a destructive impact on the environment and the loss of biodiversity and the invasion of crops by adventists. Co-management, crop rotation, association of cultures, community forest management, agroforestry and training farmers in the use of inputs will reduce the potential risks of farming practices.

Effectiveness of Nature Reserves for Natural Forests Protection in Tropical Hainan: a 20 Year Analysis

The establishment of nature reserves is a key approach for biodiversity conservation worldwide. However, there is a lack of unified methodology to evaluate the effectiveness of nature reserves, particularly in China, the world′s most populous nation supporting some of the most valuable biodiversity hotspots in the world. In this study, we conducted a long-term and large-scale analysis of the effectiveness of 20 of the earliest nature reserves established in Hainan Province, an island home to among the highest concentration of plants and animals in China. Remote sensing imagery from 1988, 1998, and 2008 were analyzed to investigate the temporal and spatial changes of natural forests in these nature reserves and surrounding areas. We also conducted transition matrix analysis and principle component analysis to identify the driving factors that affect the protection effectiveness of nature reserves. The results were as follows: 1) During the 20-year period from 1988 to 2008, natural forests coverage of the 20 studied nature reserves dropped 2.34 percentage points, whereas the natural forests coverage dropped 11.31 percentage points in a 0–5 km outside reserve buffer and 9.36 percentage points in a 5–10 km outside reserve buffer, indicating a significant inhibitory effect of the nature reserves on the loss of natural forests. 2) Natural forests coverage dropped in 60% of the studied nature reserves during the 20-year period, suggesting a poor protection effectiveness of these reserves, while the coverage proportion showed some increase(0%/yr–5%/yr) in other reserves. 3) Expansion of rubber and pulp forests as part of a booming economy were the main factors affecting the effectiveness of the nature reserves for conserving natural forests in Hainan Province. The results of this study provide an important empirical basis for the protection of natural forests in Hainan Province, which can be used as a blueprint for nature reserve evaluation in other places in China.

Tasawwuf and Its Role in Minimizing Corruption and Insurgency Among Muslims in Northern Nigeria

Tasawwuf which refers to as zuhd during the time of the prophet is being distorted with new concept contrary to the teachings of the prophet and his companions. As a result, it is misunderstood by some Muslims and few bothers to look into its reality. The current practiced of tasawwuf to some extend contradictory to the zuhd displayed during the time of the prophet and his companions. The adulteration in it has made many Muslims not to pay attention： less learning or benefitting from its fruits. The current corrupt situation among Muslims in Northern Nigeria can be attributed to absence of zuhd. The fact that corrupt mind can lead to many problems, generated into insurgency： causing a lot of damages and loss of life and property. Therefore, the implementation of zuhd according to the teachings and practice of the prophet, his companions, and early Sunni scholars can be of assistance in reducing the level of corruption among Muslims in Northern Nigeria, This can be achieved through proper Islamic education mainly for the attainment of Allah＇s pleasure. By this, a Muslim seeks for the worldly gains as a means to an end, and deceased from following his whims and caprices.

Radical Islamism in Georgia

The paper describes and analyzes the chronology of radical Islamism activities in Georgia, the threats and challenges for Georgian state coming from terrorist organizations, the spread of Ideas of Militant Islamism and Jihadism, the possibilities of using Georgian territories by the foreign and local fighters and steps taken by Georgian State. Also popularization of the idea of creation world Islamic Caliphate in the Middle East and ISIL Caucasus Province, joining the terrorist organizations ISIL and A1-Nusra Front in Iraq and Syria by some of the Georgian Muslims. The author analyzes the factors of the popularization of radical Islamism ideas among the young generation, the problems of Georgian Muslim communities and gives the recommendations for state actors.

Life Strategy Traits of the Liana Sericostachys scandens Spreading in the Montane Forests in the Kahuzi-Biega National Park (DR Congo)

Sericostaehys seandens is a monocarpic and heliophilous liana, native in tropical African forests. In the montane forests of the Kahuzi-Biega National Park （KBNP） （East of DR Congo）, it has been expanding very strongly for a decade, and is currently considered as having negative impacts on biodiversity conservation. In this paper, we test if S. scandens differs from three co-occurring, native, non spreading lianas （Gouania longispicata, Tacazzea apiculata and Adenia bequaertii） for functional traits which might influence plant expansion. For leaf traits （SLA, dry matter content, nitrogen concentration）, S. scandens did not show extreme values compared to those of the three other lianas. In contrast, S. scandens had much higher biomass allocation to sexual reproduction. It also differs from the three other lianas for its reproductive strategy that combines both vegetative propagation and sexual reproduct/on, and propagule dispersal by wind. Moreover, S. scandens has larger leaves and a greater number of lateral branches per unit stem length. It is argued that the particular combination of functional traits exhibited by S.scandens may in part explain its propensity to behave as an opportunistic weed in the disturbed areas in the montane forests of Kahuzi-Biega.

Relativistic Continuum Random Phase Approximation and Applications I. Formalism

A fully consistent relativistic continuum random phase approximation （RCRPA） is constructed in terms of the Green＇s function technique. In this method the contribution of the continuum spectrum to nuclear excitations is treated exactly by the single particle Green＇s function, which includes also the negative states in the Dirac sea in the no sea approximation. The theoretical formalism of RCRPA and numerical details are presented. The single particle Green＇s function is calculated numerically by a proper product of regular and irregular solutions of the Dirac equation. The numerical details and the formalism of RCRPA in the momentum representation are presented.

＂A Walk in Between＂--On Hart Crane＇s Imagination of Representational Space and Representations of Space in The Bridge

In this paper, Henri Lefebvre＇s theorizations about representational space and representations of space will be employed to examine Hart Crane＇s imagination of them in The Bridge. First, according to Lefebvre, representations of space are created with violence for the purpose of accumulating capital. On the other hand, representational space is directly lived or affectively felt, opened up by inhabitants＇ imagination. In addition, Lefebvre points out that in abstract space, representational space will be invaded by representations of space. In The Bridge, Crane＇s affective experience with the Brooklyn Bridge or the subway indicates that he treats New York as a representational space. Besides, Crane expresses his concern for how capitalism has encroached on it. It would seem that Crane has followed Lefebvre＇s line of thinking in The Bridge. However, it is actually a specious analysis because both the Brooklyn Bridge and the subway are representations of space. And in this long poem, Crane feels the urban space through history, which plays a key role in creating representations of space. Thus, we can conclude that Crane is actually taking ＂a walk in between＂ in The Bridge. With his imagination, Crane has combined representations of space and representational space into his own poetic vision.

美国引导林农参与碳市场的经验及启示

林农参与林业碳汇项目对提高其生计能力和收入以及应对气候变化具有重要意义。文中主要以美国家庭林主为研究对象,简要介绍其参与碳市场的背景、美国碳市场关于林业项目的规定以及美国引导家庭林主参与碳市场的经验,针对我国林农参与碳市场遇到的障碍,提出如下建议:1)合理制定碳汇交易规则,保障林业碳汇项目有序开展;2)完善中介服务体系,认可及备案更多的第三方机构;3)拓宽林业融资渠道,降低林业经营风险;4)开发适宜的方法学,引导小规模林业项目发展;5)制定全面的援助计划,激发林业碳汇项目的多重效益。

欧美典型国家林地投资的产权结构演变与组织模式比较

林地资产是当前国际投资机构优选的重要替代投资类别,林地产权结构及其关联的组织模式是影响林地投资及资产组合收益的重要基础。本文系统梳理了欧美典型国家的林地产权及结构演变,归纳了不同产权结构下林地投资主体及组织模式选择。研究发现:①欧美林地产权主要涉及以美国和瑞典为代表的私有产权和以加拿大为代表的公有产权两种类型,私人投机行为和林主权益诉求推进了林地私有产权的演变进程,行政公有产权在加拿大等国仍具有显著地位。②以林地投资管理组织(TIMOs)、房地产信托投资基金(REITs)为代表的公司制模式和以林主协会为代表的协会制模式是林地私有产权的主要组织模式,其中TIMOs、REITs等公司主体助推了林地投资全球化发展;林地公有化产权的经营组织以林务局为主体,依赖省级林务局行政协调能力实现林地可持续经营。③欧美林地投资呈现私人林地碎片化和机构林地集中化的特征,林地的所有权和经营权分离趋势明显,其中传统林产品公司由偏好林地占有转向林地剥离,公有林地由单一行政管理转向综合多功能管理,林地认证由传统生态能力评估转向兼顾林地投资需求评价。结合中国林地投资与欧美国家变化趋势的关联性问题,本文从完善林地产权内部治理结构、积极培育适度规模林业经营主体、推进林地认证市场化进程、构建有约束的林业PPP投资回报机制等方面提供了加快中国林地投资市场化的建议。