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71.
Estimation of ecosystem service values is a hot area of research in ecological conservation and economics. However, the costs of these outputs are largely unknown. In this paper, we estimated the opportunity cost of water allocated to afforestation projects through mathematical modeling based on statistical data for all of China to provide support for restoration planning based on a fuller consideration of the true costs. To guide future ecological conservation and environmental policy development, we illustrate a neglected concept (ecosystem service costs) and use this concept to compare the ecological services provided by ecological restoration based on afforestation with those of restoration based on the conservation of natural vegetation using data obtained since 1949 in China. The results showed that afforestation and natural vegetation create annual costs related to use of the available water resources equal to 4800 and 3700 RMB ha−1, respectively, representing a water opportunity cost of 1100 RMB ha−1 for afforestation. This illustrates the rule that “there is no free lunch” for any service, including ecosystem services. Therefore, to support the development of more effective and sustainable environmental restoration policy, it will be necessary to evaluate the associated opportunity costs.  相似文献   
72.
陈炜  朱妍洁 《价值工程》2015,(4):248-250
本文从赴台学生服务与管理的重要意义入手,结合大陆学生赴台学习服务与管理现状,分析持续完善赴台学生服务与管理的措施、方法。  相似文献   
73.
Human-driven land-use changes often cause a decline in biodiversity. Although traditional agricultural practices maintained biodiversity at high levels, recent land-use changes may have negative consequences on species composition. In this study, we examined the hypothesis that land consolidation, which is a major recent land-use change in agricultural areas, decreases plant species diversity over the long term (the so-called negative legacy). To test this hypothesis, we examined the relationships between consolidated areas and the occurrence of threatened plant species across Japan and at the prefecture scale. Twenty-three threatened plant species were selected, all of which were formerly common. Our results show that areas containing records of threatened plant species rarely experienced consolidation at whole-country and prefectural scales. Breakdown analysis showed that unconsolidated agricultural areas contained significantly more threatened species than consolidated agricultural areas. These results suggest that threatened plant species require unconsolidated agricultural areas (i.e., these species could not grow in consolidated areas). Thus, we propose that consolidation history could be used as an indicator of the potential for biodiversity recovery. We also suggest that consolidated agricultural areas should be used for food production rather than for the restoration of biodiversity, for reasons of cost efficiency.  相似文献   
74.
Among a number of households worldwide, forest use and income diversification have been seen as substitute livelihood strategies: farmers with more diverse income sources face a higher opportunity cost in harvesting forests and so tend to rely less on forestry resources. The current study uses rural household survey data captured in the Chinese provinces of Fujian, Shaanxi, Hunan, and Jiangxi. It applies a Heckman regression model and a quantile regression model to determine the effect of income diversification on forest dependence. The three main findings of this study are as follows. (1) The mean income diversification index values in Fujian, Shaanxi, Hunan, and Jiangxi are 1.81, 1.46, 1.63, and 2.00, respectively; this indicates that livelihood activities within the study areas are limited. (2) When the income diversification index increases by 10%, the proportion of forest income to total income within the study areas decreases by 4–8%; this indicates that income diversification can significantly reduce a household's dependence on forest resources, especially among the poorest households. (3) For the top 20% of high-income households, the effect of income diversification on forest dependence is insignificant, but for the bottom 20% of low-income households, income diversification has a major impact in terms of reducing their forest reliance (6–10%). The findings of this study will help inform the design of alternative policies that could alleviate pressure relating to forest-resource protection.  相似文献   
75.
A stylised fact of India's economic history since 1950 is that the rate of growth of the economy has accelerated periodically and across policy regimes. In this paper we present a theoretical framework that can generate such a pattern due to cumulative causation through positive feedback. The growth process is then investigated using cointegration analysis. We are able to establish the existence of positive feedback which is at the centre of cumulative causation. We are also able to date the onset of this mechanism which has driven growth in India for close to half a century by now. This leads us to conclude that the internal dynamics are at least as important as the policy regimes to understand growth over the long term in this country.  相似文献   
76.
Prior research has mostly examined consumer attitudes toward online services/retailing in general and a few researchers have addressed consumer experiences with online food delivery (OFD) services. The purpose of this study is to examine the structural relationship between convenience motivation, post-usage usefulness, hedonic motivation, price saving orientation, time saving orientation, prior online purchase experience, consumer attitude and behavioral intention towards OFD services. The study proposes an integrative theoretical research model based on the Contingency Framework and Extended Model of IT Continuance. 224 valid questionnaires were collected to empirically test the research model using the partial least square (PLS) path modeling approach. The results imply that the proposed hypotheses were supported, except for the relationship between prior online purchase experience and post-usage usefulness. Practical implications and limitations are discussed.  相似文献   
77.
This study explores Australian small-scale rural lifestyle landowners’ perceptions of and experiences with natural resource management (NRM) extension and incentive programmes and discusses means to better-match such programmes to these landowners’ NRM interests, assistance needs and delivery preferences. Data was collected from seventeen in-depth qualitative case-studies of small-acreage landholders located in the Noosa hinterland in south-east Queensland. These landholders indicated a high need for expert advice, labour and other resource assistance to achieve their property management objectives. They had, however, a low-level of awareness and understanding of available programmes (particularly incentive schemes) that could provide some of their needed support. Other key barriers to the landholders’ participation in these programmes were aversions to support providers, a perceived unsuitability of properties or irrelevance of particular incentive programmes, and concerns about programme application procedures or property-rights and value-related implications of engagement. Increased NRM engagement among small-scale lifestyle landowners may be achievable through amendments to existing support programmes and better communication of these programmes. The design and delivery of appropriate measures and messages may require collaborative partnerships, with knowledgeable and influential ‘go-to’ landowners and peer-mentoring networks playing a critical role. In many cases, conservation-focused incentive programmes may need to facilitate cooperative NRM among groups of adjoining micro-scale lifestyle landowners and allow greater flexibility in the length and allowable land and forest management practices of contractual agreements. Moreover, small-scale lifestyle landowners have much interest in and need for support to integrate multi-purpose agroforestry systems with other environmental and aesthetic property management goals. Workshops, follow-up field-days on participating properties, free one-on-one on-property advice, and NRM guides that include detailed case-study accounts of landowner experiences are important means of communicating the availability, administrative requirements and benefits of support programmes to small-scale lifestyle landowners.  相似文献   
78.
In the 1990s, the Democratic People’s Republic of Korea (North Korea) suffered from severe food shortages and large-scale deforestation, which triggered a stage of rural conservation reform. Since 2004, with support from the Swiss Agency for Development and Cooperation (SDC), North Korea’s Ministry of Land and Environmental Protection (MoLEP) has implemented a Sloping Land Management Program (SLMP). The SLMP established sloping land user groups and granted these groups the right to use marginal land for agroforestry development. This devolution of land rights from state control onto local groups is a landmark in North Korea, and this decentralization initiative has now expanded to over eight counties to involve thousands of households. It has also led to the launch of a National Agroforestry Policy and Strategy. Drawing from both qualitative and quantitative data collected from 2008 to 2014, this paper documents the process and effects of the SLMP. It argues that the decentralization reform in land management has contributed to not only food security with increased food crop diversity and productivity, but also notably forest recovery through an expansion of tree plantations and agroforestry practices on degraded sloping lands. However, an insufficient power transfer in the form of a lack of timber rights granted to the local user groups has hampered the effectiveness of the SLMP. There are also institutional and geopolitical challenges that are limiting further scaling-up of land-use decentralization across the country. The policy implication calls for more international investment as well as national land-use policy reforms in order to promote and facilitate further decentralization of sloping land management and to secure greater use rights for sloping land user groups.  相似文献   
79.
Many natural resource management researchers have focused either on institutional design and evaluation or on livelihood outcomes per se without explicitly acknowledging and rigorously examining linkages between the two. Thus, a major gap in the current literature on co-management institutional arrangements is the extent to which co-management has strengthened the livelihoods of poor forest-dependent communities. This gap is addressed in this paper by developing and testing an argument that well-designed co-management arrangements have strengthened the livelihood outcomes of poor forest-dependent communities in a Kenyan case study. The hybrid analytical framework developed for this analysis situates Ostrom's (1990) design criteria for co-management institutions in the broader context of the Sustainable Livelihood Framework. It then uses this analytical framework to evaluate the Arabuko-Sokoke Forest Reserve (ASFR) co-management initiative in Kenya, based on a three-step process. First, the paper provides an overview of current institutional arrangements for governance of the ASFR co-management regime. Second, it evaluates the extent to which these governance arrangements can be characterized as devolved collaborative governance, informed by Ostrom's (1990) design principles and; third, it evaluates the extent to which the livelihood outcomes of forest dependent communities that are participants in the co-management project have had their livelihoods strengthened as a result of the ASFR co-management governance arrangements. The paper demonstrates that the institutional arrangements for ASFR co-management are relatively nascent and emerging because the governance arrangements for the ASFR co-management project cannot be characterized as fully devolved de jure collaborative governance. Notwithstanding this, the findings reveal that participant forest-dependent communities in the co-management project had improved livelihoods compared to forest-dependent communities outside the co-management scheme. It is suggested that this is due to the de facto co-management arrangements.  相似文献   
80.
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