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有史以来对老虎的栖息地最全面的科学研究发现，老虎现在的栖息地比10年前人们认为的面积减少了40%。这些老虎现在的活动范围只占历史活动范围的7%。 (Words: about 300; Time: 3.5 minutes) Tiger habitats worldwide have shrunk by 40 percent in the past decade and their survival depends on cracking down on illegal hunting, working to reduce conflicts with humans, and protecting key ranges (动植物分布区), according to a study, the most thorough ever. The tiger population has steadily declined to about 7,500 globally, and the big cats continue to face many threats including the trade for medical purpose in Asia. Now, tigers roam in only 7 percent of their historic range 40 percent less than a decade ago, the World Wildlife Fund (WWF) noted. The study by a few conservation groups identified for the first time 76 areas, mostly in Asia, that have the best chance of supporting tiger populations. Many important areas have been overlooked, largely because there has been no method to systematically identify areas of high conservation potential, the study said. About half of the 76 areas can support 100 tigers and offer excellent opportunities for the recovery of wild tiger populations. Researchers are focusing on a few key regions in India, Russias Far East and parts of Southeast Asia. Tiger breeding areas must be protected and efforts to link different tiger habitats need to be improved, the study said. | 
