Valuing or pricing natural and environmental resources?

Zhang, Yaoqi; Li, Yiqing

doi:10.1016/j.envsci.2004.09.005

Cited by 24 publications

(18 citation statements)

References 22 publications

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“…Age had a negative effect on both WTP and WTA, indicating that older people were less likely to provide a positive answer to a proposed payment or compensation. Some of the variables in this study, such as the number of family members, had no effect on either WTP or WTA but were significant in other studies (Zhang and Li 2005). The lack of significance of this factor in our study demonstrates a specific family condition.…”

Section: Econometric Model Resultscontrasting

confidence: 49%

“…The simplicity and flexibility of the CVM, however, means that it will continue to be used to estimate non-market values (Zhang and Li 2005). Our application of CVM to Hongze Lake reveals the value of protecting or improving its water quality, factors driving disparities between WTP and WTA, and implications for implementing various environmental quality policies.…”

mentioning

confidence: 99%

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Public demand for remediating a local ecosystem: comparing WTP and WTA at Hongze Lake, China

Huang

Ban

Duan

et al. 2013

Lake and Reservoir Management

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Section: Econometric Model Resultscontrasting

confidence: 49%

mentioning

confidence: 99%

Public demand for remediating a local ecosystem: comparing WTP and WTA at Hongze Lake, China

Huang

Ban

Duan

et al. 2013

Lake and Reservoir Management

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“…This result confirms doubts rose by Randall (2002) and Zhang and Li (2005) about the suitability of the WTP approach for the assessment of the economic value of land use functions or ecological services.…”

Section: Determinants Of Farmers' Willingness-to-paysupporting

confidence: 75%

“…But the accuracy of WTP is strongly debated for several reasons (for an overview see Zhang and Li (2005)). Major objections are that the results are biased and do rather reflect values on individual than on society level, that individuals inquired may be ill-informed, might seek to answer strategically or carelessly (Constanza et al, 1997;Randall, 2002;Zhang and Li, 2005).…”

Section: Willingness-to-paymentioning

confidence: 99%

“…The potential advantage the willingness-to-pay method (WTP) offers, is that it reflects, in a single monetary amount, the entire range of attributes (both benefits and ''nonbenefits'') offered by the good or service being valued (Blumenschein and Johannesson, 1999). WTP is among the most popular approaches to value non-market natural and environmental resources because of its simplicity and flexibility (Zhang and Li, 2005). But the accuracy of WTP is strongly debated for several reasons (for an overview see Zhang and Li (2005)).…”

Section: Willingness-to-paymentioning

confidence: 99%

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The economic value of the phytoremediation function – Assessed by the example of cadmium remediation by willow (Salix ssp)

Lewandowski

Schmidt²,

Londo

et al. 2006

Agricultural Systems

108

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The combination of biomass production with other land use functions in multiple land use systems can reduce biomass production costs if these land use functions generate an economic benefit. Aim of this study is to find and apply methods for the quantification of the economic value of the phytoremediation function (cleaning of the soil by plants). For the purpose the combination of biomass production from willow and the phytoremediation function in a cadmium-contaminated case study area in the Rhine valley (near Freiburg, Germany) was analyzed. Farmers in this area will either have to set the land aside or switch from the high value vegetable production to the production of cereals that generate a lower gross margin. An alternative is the production of heavy metal accumulating willow varieties, which would clean the soil to the cadmium threshold value at which the area can be taken into vegetable production again within a period of six years. Three methods were chosen and applied to 0308-521X/$ -see front matter Ó

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Wetlands: conservation's poor cousins

Kingsford

Basset

Jackson

2016

Aquatic Conservation

209

112

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1. About 5-10% of the world's land surface is currently wetland but possibly >70% is already destroyed or impaired. Conservation of these unique ecosystems lags progress in other realms, reflected in high rates of biodiversity loss. Wetlands provide a range of critically important ecosystem services including fresh water, nutrient cycling, food and fibre production, carbon fixation and storage, flood mitigation and water storage; water treatment and purification and habitats for biodiversity. There is increasing recognition that these services provide real economic values.2. Wetlands are affected by numerous threats including habitat loss and degradation, climate change, pollution, invasive species, overharvesting and disease. The most serious impact is from habitat loss and degradation caused by upstream water resource developments and conversion to agriculture, industry and transport, and urban development.3. The status of the distribution and extent of the world's wetlands remains poorly known, varying among countries. Wetland loss has varied internationally, with generally higher impacts in the Northern Hemisphere, with its long history of conversion to urban centres, ports and agriculture and yet there are increasing losses occurring in developing continents in the south.4. Wetland conservation needs to focus primarily on identification of priority areas for biodiversity conservation and legal protection, including Ramsar-listing. Identification of wetland biodiversity hotspots for conservation should be an imperative, with associated Ramsar-listing. There also needs to be effective protection of flow regimes. Mitigation of other deleterious processes, pollution, overharvesting, invasive species and disease, also remains particularly important.5. Conservation of wetlands remains especially challenging, given the importance of fresh water for human communities, industry and agriculture. Without effective conservation actions, mitigation of threats, rigorous risk assessment and acknowledgement of the value of wetland ecosystem services, wetland conservation will continue to lag behind conservation in other realms in protecting the Earth's biodiversity.

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Valuing or pricing natural and environmental resources?

Cited by 24 publications

References 22 publications

Public demand for remediating a local ecosystem: comparing WTP and WTA at Hongze Lake, China

Public demand for remediating a local ecosystem: comparing WTP and WTA at Hongze Lake, China

The economic value of the phytoremediation function – Assessed by the example of cadmium remediation by willow (Salix ssp)

Wetlands: conservation's poor cousins

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