“Overall, about 40 percent of the suitable habitat for pandas is inside the nature reserves,” said Andres Vina, a specialist. “But we have also identified potentially suitable habitat outside the reserves.”

　　The giant panda is the rarest member of the bear family. Pandas once ranged throughout most of China, northern Vietnam and northern Myanmar. Today, fewer than 1,600 giant pandas live in the wild in three Chinese provinces; Gansu, Shanxi and Sichuan. Human actions—including logging(伐木), residential development and the expansion of farming—are considered the main reasons for the dramatic decrease of the giant panda’s habitat.

　　The research team developed habitat models using geographical and environmental information gathered by satellites overlaid with information on panda occurrence. After analyzing six mountain regions in the three provinces where pandas are known to live, the scientists developed a habitat suitability index(索引) for the entire 48,328 square-mile area. The range-wide habitat analysis model gives the government and other agencies a new tool as they develop conservation strategies not only for pandas but also for many other endangered species.

　　“The Chinese government plans to add about 69,500 square miles of land to the country’s nature reserve system between 2010 and 2020,” said Zhiyun Ouyang, director of the Lab of Urban and Regional Erology at the Chinese Academy of Sciences in Beijing. “So opportunities exist to create new reserves, to expand existing reserves and to create pathways that increase the connectivity among the reserves. On the basis of our results, we suggest some new areas be included in China’s nature reserve system.”

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