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Data point to some improvements in China's environment

Official efforts to protect China's environment have had some success, although severe problems remain and some are still worsening

The rapid growth of China's forests over the past 20 years makes them the fastest growing forest resources in the world, according to an assessment published in the November issue of BioScience.

The study, by Haigen Xu of the Nanjing Institute of Environmental Sciences and nine colleagues, examined an array of indicators of biodiversity in China as part of an effort to assess China's progress toward the goals of the Convention of Biological Diversity. Parties to the convention agreed in 2002 to reduce biodiversity loss significantly by 2010.

China is a megadiverse country that has been undergoing rapid development, so the finding of growing forest stocks is surprising, although some of the growth may have consisted of monoculture plantations, which do not increase biodiversity.

The increase in forest cover was not the only bright spot that Xu and colleagues discovered. The amount of desertified land in China decreased between 1999 and 2004, emissions of many industrial pollutants have fallen, and a measure of marine ecosystem health shows that Chinese waters have started to improve--probably because of fishing restrictions--after reaching a low in 1997.

The favorable indicators do not conceal some bleak realities and worsening trends. Pollution in Chinese marine ecosystems is "still very severe;" mammal, fish, and bird species across the country are under increasing threat; and the use of fertilizers and pesticides that pollute rivers and lakes is increasing. Grasslands are declining, and the number of newly discovered invasive alien species shows "a tremendous upward trend," Xu and his colleagues write. The area devoted to nature reserves is large and has grown, although many of the reserves are poorly marked and maintained.

All in all, the authors say, despite major efforts by the Chinese government, "China still faces grave challenges in pollution control and biodiversity conservation." They note that "the next decade is a critical period for China to engage all stakeholders in protecting its rich and unique biodiversity."

After noon EST on November 2 and for the remainder of the month, the full text of the article will be available for free download through the copy of this Press Release available at

BioScience, published 11 times per year, is the journal of the American Institute of Biological Sciences (AIBS). BioScience publishes commentary and peer-reviewed articles covering a wide range of biological fields, with a focus on "Organisms from Molecules to the Environment." The journal has been published since 1964. AIBS is an umbrella organization for professional scientific societies and organizations that are involved with biology. It represents some 200 member societies and organizations with a combined membership of about 250,000.

The complete list of peer-reviewed articles in the November 2009 issue of BioScience is as follows:

Molecular Markers, Natural History, and Conservation of Marine Animals. Ronald S. Burton

China's Progress toward the Significant Reduction of the Rate of Biodiversity Loss. Haigen Xu and colleagues

Effects of Timber Harvest on Amphibian Populations: Understanding Mechanisms from Forest Experiments. Raymond D. Semlitsch and colleagues

Neotropical Forest Conservation, Agricultural Intensification, and Rural Out-migration: The Mexican Experience. Luis García-Barrios and colleagues

Plant Biosecurity in the United States: Roles, Responsibilities, and Information Needs. Roger D. Magarey, Manuel Colunga-Garcia, and Daniel A. Fieselmann

The Darwinian Revelation: Tracing the Origin and Evolution of an Idea. James T. Costa

BIOTAP: A Systematic Approach to Teaching Scientific Writing and Evaluating Undergraduate Theses. Julie Reynolds, Robin Smith, Cary Moskovitz, and Amy Sayle

Jennifer Williams | EurekAlert!
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