晋江市土地利用变化对生态系统服务价值的影响

以晋江市为研究区,依据2005年,2010年和2015年3期土地利用数据,从生态系统服务功能角度,运用Costanza的方法,结合谢高地修正的我国生态服务价值当量因子表,分析了晋江市土地利用变化与生态服务价值的响应关系。结果表明:2005-2015年,晋江市的城镇用地显著扩张,而耕地和林地却急剧减少,土地利用的生态系统服务价值总体呈逐年下降趋势。通过分析晋江市土地利用变化对生态服务价值的影响可以为科学合理利用土地,保障人口、资源、环境的可持续发展提供决策支持。敏感性分析表明,生态服务价值对生态服务价值系数的变化是缺乏弹性的,因此结果是可信的。在编制土地利用规划时应将生态服务价值考虑其中,尤其是应注重保护湿地、水域、林地等生态服务价值系数高的土地利用类型,以期实现晋江市的可持续发展。     

Valuation of ecosystem services provided by irrigated rice agriculture in Thailand: a choice experiment considering attribute nonattendance

This research investigates how the public of a middle‐income country, Thailand, values ecosystem services associated with irrigated rice agriculture using a choice experiment. The results show a significant willingness to pay for services such as drought mitigation, water quality and the environment and maintenance of rural lifestyles and rice landscapes. The iterative procedure developed to fully analyze the incidence of attribute nonattendance (ANA) improved the model fit when compared with a multinomial logit model or an ANA model with potentially only one attribute ignored at a time (ANA‐1). Moreover, the inferred probability of the class of respondents having attended all attributes was 45%, compared to 9% with ANA‐1 model. However, it also suggests that 55% of the respondents made their choices by considering only two of the five attributes. Finally, this research also suggests that failing to consider ANA does not change the public ranking of scenarios contrasted by the services they would provide but would overestimate the WTP for these scenarios.     

政治关系“力量”与民营企业价值研究:腐败的调节效应

从社会网络理论的强弱关系视角对2012-2014年福布斯中国富豪榜的企业家及其企业进行了政治关系的度量,检验了腐败是否会调节政治关系"力量"对企业价值的影响。研究发现,企业家本身所具有的政治关系对企业价值具有明显的正向影响作用,关系的"力量"越强,对企业价值的正向影响就越大;与此同时,腐败的出现会强化政治关系"力量"对民营企业价值的影响。通过分组验证发现,这种"力量"在腐败程度较高环境下更易对企业价值产生正向影响,但在腐败程度较低的环境中,政治关系对民营企业价值的影响很多时候并不显著。     

科技型小微企业创新生态系统网络治理研究

建立一个完整、高效的创新生态系统是破解科技型小微企业创新困境、提高创新效率，以及助力新旧动能转换的有效途径。基于生态系统理论和演化动力学模型，构建科技型小微企业创新生态系统网络框架和网络联结模式，利用竞争、互利共生和捕食关系演化模型，分析演化模型的均衡点及其稳定条件。结果发现，创新生态位重叠程度决定了竞争激烈程度，系统演化均衡条件是主体间分工程度高，且嵌入适度。最后，从价值主体和机构主体两个方面〖JP〗提出推进科技型小微企业创新生态系统不断进化的治理策略。     

Theoretical analysis and model design of search for ecological conservation redlines based on the sensitivity assessment of ecosystem services

Most small-scale social economies are characterised by their deficiency, lack, and/or difficulty in matching natural data. Against this backdrop, this paper builds a relatively uniform theoretical framework and designs a more economical and objective method for demarcating ecological conservation redlines (ECR) based on sensitivity assessment of ecosystem services. The results show that the sensitivity assessment model designed in this study can identify sensitive zones effectively, and that the ECR in Hubei Province are well within the sensitive zones so identified. The delimited areas based on the sensitive assessment of ecosystem services have great similarities (95%) with the actual ECR areas in Hubei Province. The most ecologically important functional zones (EIFZ) can also be identified using the regional ecological sensitivity coefficient. When the threshold of EIFZ is set higher, the probability that it falls within the ecologically sensitive areas is greater and the ECR delimited by the method proposed in this study will be more reliable. Theoretically, the delimitation of ECR can be inserted at any evaluation level with a grid resolution higher than that of the land use data, which can be used as a supplement to the ECR delimitation method in ecology or geography.     

Conservation tenders in low-income countries: Opportunities and challenges

The number of payments for environmental service schemes (PES) in low-income countries has grown more rapidly than in high-income countries. Yet, scarce funding among potential service buyers in low-income countries arguably makes it even more important to design PES cost-effectively. Tendering conservation contracts is one possible way to improve the cost-effectiveness of PES schemes. There is reason to believe that they are particularly well-suited to overcome some typical constraints in low-income environments. However, experience with conservation tenders in low-income countries remains limited to a handful of scientifically motivated experimental trials. Larger roll-outs can so far only be found in high-income countries, mainly the US and Australia. How different would rolled-out PES tenders perform in low-income countries, and would they require distinct design features? Here, we identify specific opportunities and challenges for implementing conservation tenders in low-income countries. Conceptually, we examine each implementation step of a tendered PES for typical low-income country characteristics. Some may affect the design requirements for successful implementation, in either positive or negative ways, compared with the typical high-income country case. Imperfect markets and information about production systems, high subsistence incomes, high variability in prices and yields, and risk-averse behavior all constitute characteristics which conservation tenders may be particularly suited to address. Conversely, lack of expertise and infrastructure can hamper tender design and the dissemination of information to potential participants. Some of these challenges can be dealt with, but solutions unavoidably increase transaction costs which, in turn, may affect scalability. While tenders reduce poverty alleviation effects when informational rents of service providers are being squeezed, tendered PES programs do not reduce rents to zero under normal circumstances, and can therefore still deliver income transfers and contribute to poverty alleviation.     

Identifying and mapping the tourists⿿ perception of cultural ecosystem services: A case study from an Alpine region

Landscapes provide an array of services to society, from the provision of food and material, to the provision of cultural ecosystem services such as recreation, aesthetics or spirituality. Studies on cultural ecosystem services, however, remain rare and little is known about the spatial localisation of these services. In this study, we adopt and test a framework to identify and map the provision of cultural ecosystem services as perceived by tourists in an Alpine region, i.e. the region of South Tyrol in Italy. A photo-based questionnaire survey is combined with cartographical representations of landscape types to elicit hot and coldspot areas of cultural ecosystem service provision. We statistically test for influences of the land use type and the respondents' socio-demographic background on the tourists' perception of these services. The results show that different spatial patterns emerge for each of the investigated cultural ecosystem services depending on the distribution and extent of the landscape types to which they are related. In particular traditionally managed landscapes, small in extent and mainly scattered over large areas between 1000 and 2200 m a.s.l., are hotspot areas of aesthetic beauty, leisure activities and spirituality. In contrast, intensively managed landscapes, mainly located in the lowland plains of the study site, are considered to be more important for the provision of cultural heritage values. While the results suggest that land use type exerts the strongest influence upon tourists' perception, factors such as the respondents' perceived importance of the services, their gender, cultural background, environmental engagement and experience with the landscape play a significant but subordinate role. We conclude that the spatially explicit information about the provision of cultural ecosystem services can serve as a helpful basis for the design and further implementation of land use policies that acknowledge the high touristic value of traditionally used landscapes in mountain regions.     

互联网发展与创新绩效:三维理论框架和异质性验证

在新一轮科技革命背景下，企业经济活动越来越依赖于互联网，因此探讨中国互联网发展能否有效提升创新绩效，具有重要的理论价值和现实意义。文章构建了互联网发展影响创新绩效的三维理论框架，同时从"质量-数量"二分视角，采用2011-2016年省际面板数据，借助面板个体效应模型对二者相关关系予以实证分析，研究结论如下：（1）互联网通过去壁垒、去中心、去中介，从要素、组织、生产范式三个维度分别经由要素重组、组织变革和供需迭代促进了创新绩效。（2）在全国层面，互联网发展和创新质量间存在U型关系，而互联网发展与创新数量间则表现为倒U型关系，且拐点值存在明显差异。（3）在分区域层面，东中西部互联网发展与创新质量间分别呈现出U型、U型、倒U型关系，与创新数量则均表现为倒U型关系。（4）由于不同省份2016年互联网发展水平分布在拟合线拐点两侧的位置不同，各省份未来政策着力点有所差异。（5）数据驱动、生态网络、用户主导分别与互联网发展深度复合影响了创新绩效，但在显著度上存在差异。综上，应从互联网建设、推广与应用，研判区域异质性，发挥调节变量的正向效应三方面重点突破，最大化互联网创新绩效，促进经济高质量发展。     

Forest governance and economic values of forest ecosystem services in Vietnam

Forest ecosystems deliver valuable services to humanity. However, many forests are being degraded and their services have been undervalued. The main problem lies in the inadequate institutional arrangements for forest governance. This paper aims to assess the effects of alternative forest governance arrangements on the provision and economic values of forest ecosystem services (FES) in Vietnam. The study presents a framework for mapping land use and land cover (LULC) change stemming from actual and hypothetical changes in forest governance regimes, quantifies the resulting changes in the provision of FES, and estimates the associated economic values. In the context of the study site in the North Western uplands of Vietnam, we test three alternative forest governance scenarios: business as usual, with a dominant government role; a community-based governance regime; and a private, individual-based forestry governance regime. Scenarios are based quite closely on the way these regimes are (or might be expected to be) implemented in Vietnam. For each forest governance scenario, we map LULC changes based on land suitability analysis and transition likelihood for the period 2010 − 2020. The resulting maps are used as inputs into the InVEST (Integrated Valuation of Environmental Services and Tradeoffs) model, which is used to estimate the quantity of three specific FES: carbon storage/sequestration, sediment yield, and water yield. We apply economic valuation methods to value these services: the social cost of carbon is used to estimate the economic values of carbon storage/sequestration; the cost of removing sediment deposited in reservoirs is applied for valuing the reduction of sediment yield, and the residual value of water supply for hydropower generation is used for valuing water yield. The results show that forest governance regimes have a significant effect not only on forest LULC, but also on the quantity and values of FES derived from forests. The FES are differentially affected by alternative forest governance regimes: some FES increase in quantity and value under some governance regimes and decrease under others. Of the three forest governance regimes examined, there is no one regime that will always be ‘better’ than the others in terms of provisioning all considered FES. For the specific context of Vietnam, we find that the private forest governance scenario is inferior to the community-based governance scenario, as an alternative to the current state-based governance. Because our results pertain to the scenarios as constructed, rather than generally to broad categories of governance regimes, there remains the possibility that regimes can be constructed that outperform all of those examined here.     

Environmental factors influencing the management of key accounts in an Arab Middle Eastern context

Within the sales and marketing literature, it is recognised that a range of external factors can influence how companies in the business-to-business field manage business relationships within national and across international borders. However, there have been very few studies that explore the influence of the external environment on key account relationships, especially within the context of emerging economies. This study draws on the network approach and contingency theory to identify and highlight the influence of external environmental factors on the management of inter-organisational relationships with key customers in emerging economies in the Arab Middle East region. It is based on an extensive qualitative enquiry that utilises 50 in-depth semi-structured interviews conducted in Jordan with endogenous and Western firms. It concludes that key account practices within an Arab context are shaped by a number of contingencies that are embedded in broader institutional contexts and the business environment, which may challenge the adoption of company-wide universal key account management policies across borders.