《科学》[Science]13年7月5日出版pdf全文

nero1981

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Aerial view of farmland, Epping Forest, and the city of London. Landscapes such 7 w9 i4 w! }$ F: G0 N, {
as this one produce important ecosystem services, but minor increases in   }, s5 b$ s3 \4 P  U
marketed goods often cause major losses in the value of those services. This
/ u0 K7 u# j+ J5 p' Hsituation can be reversed by combining science and economics in a comprehensive
. m& Q4 x/ x- Z5 G+ Z4 @approach to target improvements in the natural environment. See page 45. Photo: Andrew Holt/Alamy
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yuheng

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懵懂干细胞

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