美国荒野风景河流的空间分布特征及其对中国的启示
Spatial characteristics of the national wild and scenic rivers system in the United States and its enlightenment to China
注：此图根据USGS官网（The National Map）绘制而成,底图无修改（图中州名缩写见
美国荒野风景河流的空间分布特征及其对中国的启示 |
| 李鹏, 赵敏, 艾伦·沃森, 杨鹏, 余丹 |
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Spatial characteristics of the national wild and scenic rivers system in the United States and its enlightenment to China |
| LI Peng, ZHAO Min, Alan Watson, YANG Peng, YU Dan |
| 图2 NWSR州尺度空间分布特征及阶段发展 注：此图根据USGS官网（The National Map）绘制而成,底图无修改（图中州名缩写见 |
| Fig. 2 NWSR spatial characteristics on state scale in different periods |
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