海角大神

Scientists expect that climate change will dramatically impact the environment and dislocate many species 鈥� such as plants, trees and fish 鈥� which will have to move from their current habitats to new ones in order to adapt. And where those species go, so goes the their economic value.

This is already happening with fish, reports Rutgers University marine biologist Malin Pinsky, some of which are moving toward the cooler poles as global temperatures rise, a trend that might benefit commercial fishermen near the poles, but harm the ones in non-polar regions who currently depend on the resource for their livelihoods.

So the big question looming over fishing communities, policymakers and conservationists, is how is this wealth being redistributed?

鈥淛ust moving stuff around the globe via climate change, that will change the amount of wealth the globe has as a whole,鈥� Eli Fenichel, an environmental economist at the Yale School of Forestry and Environmental Studies, tells 海角大神.

Dr. Fenichel says that to figure out where wealth is moving and to plan accordingly, it鈥檚 time for better accounting. This means treating natural resources, such as fish, like any other capital asset, be it land or stocks.

鈥淛ust measuring physical quantities is not enough to understand how climate change can impact wellbeing and wealth in society,鈥� says Dr. Fenichel, the on the topic in the journal Nature Climate Change.

鈥淲e need ways of thinking about measuring sustainability 鈥� so policymakers can use this information to help negotiate reasonable climate change management agreements,鈥� he says.

Economists have been calling for an updated measure of wealth around the globe for at least a century. It should include the value of natural resources, they say, the skills of the labor force, health, education, and bridges, for example. Countries now measure wealth by tracking their gross domestic product, which is basically the national income.

In the last couple of decades economists have started to figure out how to include measures of 鈥渘atural capital鈥� and 鈥渉uman capital鈥� into the accounting.

鈥淭he problem has been 鈥榟ow do you go out and measure that?鈥欌�� says Fenichel.

There wasn鈥檛 enough data, until now.

鈥淲ith new technologies and the Internet, the arguments that we don鈥檛 have the data or that it鈥檚 too hard to wrangle is just going away,鈥� Fenichel says.

In the case of fish, for example, economists can use fish stock assessment data, with behavioral measure of fisherman who respond to fishing quotas based on that assessment, and their resulting profits to help calculate the value of that resource to a community. The idea is to empower the community to manage the natural resource better so it can maintain its value over the long term.

A good analogy is a house: give it to someone who takes care of it, and it will hold its value for years. Give it to someone who trashes it, and the house will decline in value.

The biggest winners in nature鈥檚 redistribution of wealth will be communities that make smart investments, say the authors of Wednesday鈥檚 study.

鈥淚f wealthier communities and countries are more likely to have strong resource management, then these wealthy groups are more likely to benefit, thus exacerbating inequality,鈥� says Fenichel.

But of course, the opposite could also be true.