Global efforts to protect biodiversity fall short

doi:10.1126/science.369.6510.1418

GSTDTAP > 气候变化

DOI	10.1126/science.369.6510.1418
	Global efforts to protect biodiversity fall short
	Erik Stokstad
	2020-09-18
发表期刊	Science
出版年	2020
英文摘要	A major report card on the state of biodiversity gives failing grades to the world's nations. The United Nations's Global Biodiversity Outlook 5 , released this week, concludes that the world has not met ambitious targets set 10 years ago to protect nature. “We are losing biodiversity and that has very real consequences to people's health, prosperity, and well-being,” says Jane Lubchenco, a marine ecologist at Oregon State University, Corvallis, who was not involved in the report. ![Figure][1] CREDITS: (GRAPHICS) N. DESAI/ SCIENCE ; (DATA, CLOCKWISE FROM TOP LEFT) SECRETARIAT OF THE CONVENTION ON BIOLOGICAL DIVERSITY (2020) BASED ON DATA FROM GANNON ET AL. ; GLOBAL FOREST WATCH; FAOSTAT; IUCN AND BIRDLIFE INTERNATIONAL; IUCN; OECD STAT There is still time to halt—and even reverse—the loss of biodiversity, the report concludes. But that will require rapid and substantial changes in agriculture, industry, and other activities. “More than anything, it's telling us we have quite a lot more to do. Not more of the same, but more of the tougher transformational shifts,” says Lina Barrera, head of international policy at Conservation International, an environmental organization. One such change would be including the value of biodiversity in economic decisions, such as infrastructure investment or farm subsidies. In 2010, the 196 nations that belong to the U.N. Convention on Biological Diversity (CBD) agreed to 20 goals for preserving flora and fauna, known as the Aichi biodiversity targets. Every few years, CBD has evaluated progress, based on national reports and other sources. This latest Outlook also reflected trends revealed by a major scientific review by several hundred researchers ( Science , 10 May 2019, p. [517][2]). The new assessment finds some bright spots. Fisheries are becoming more sustainable in nations with good management schemes. Invasive species are being eradicated on ever more islands. Perhaps most encouraging, the extent of protected areas has risen substantially to 15% of land and 7% of the ocean (see graphs, above). But those figures are still short of the targets of 17% and 10%, respectively, and Lubchenco notes that only 2.5% of the ocean has been highly protected so far. Overall, nations reported they were on track to meet an average of 34% of their own targets, although many were not as ambitious as the global Aichi targets. They reported progress, for example, on raising awareness about conservation, building research capacity, and creating strategies for protecting species. It's not enough, the report says. Only six targets have been even partially reached and some indicators are headed the wrong way. For example, while global pesticide use has been relatively flat, many nations have increased their use of chemicals that harm pollinators. In general, progress is being swamped by growing consumption of energy and materials, and the destruction of habitat by new farms, roads, and dams. As a consequence, biodiversity continues to be lost, the report finds. “Things are not going to change much until we deal with the root issues, and this is much more difficult,” says ecologist Sandra Díaz of Argentina's National Scientific and Technical Research Council and the National University of Córdoba. Observers hope the report's sobering conclusions will motivate countries to press for more progress and higher goals when they meet in May 2021 to set new CBD targets for 2030. Draft targets already released are “roughly moving in the right direction,” Barrera says. One proposal, for example, calls for protecting a total of 30% of land and marine habitat. “That is ambitious, but it is absolutely necessary,” Lubchenco says. Achieving the next round of targets will be “very high stakes for everybody,” Díaz says, “not just ecologists and conservationists.” [1]: pending:yes [2]: http://www.sciencemag.org/content/364/6440/517
领域	气候变化 ; 资源环境
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文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/295401
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Erik Stokstad. Global efforts to protect biodiversity fall short[J]. Science,2020.
APA	Erik Stokstad.(2020).Global efforts to protect biodiversity fall short.Science.
MLA	Erik Stokstad."Global efforts to protect biodiversity fall short".Science (2020).