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

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
表4 不同类型不同层级生态分区中的NWSR单元数量分布
Tab. 4 The number of NWSR in each level and different types of ecological regions of the USA
Ⅰ级生态区大区Domain Ⅱ级生态区亚区Division Ⅲ级生态区小区Province
编号/
名称
NWSR
数量(个)
编号/
名称
数量
(个)
编号/
名称
数量
(个)
100/极地
Polar
25
120/冻土undra
11
125/白令冻土带(北)
Bering Tundra (Northern)
1
126/白令冻土带
(南Bering Tundra (Southern))
1
M121/布鲁克斯岭冻土带-极地荒漠
Brooks Range Tundra-Polar Desert
8
M127/阿留申海洋草甸-荒野
Aleutian Oceanic Meadow-Heath
1
130/亚北极\
Subarctic
14
131/育空山间高原台地
Yukon Intermountain Plateaus Tayga
2
135/沿海槽湿润台地
Coastal Trough Humid Tayga
1
M131/育空山间高原台地
Yukon intermountain Plateaus Tayga
3
M135/阿拉斯加山脉湿润台地
Alaska Range Humid Tayga
4
M139/上育空台地-草甸
Upper Yukon Tayga--Meadow
4
200/温湿润
Humid Temperate
121
210/温大陆性亚区
Warm Continental
26
212/劳伦混交林
Laurentian Mixed Forest
21
M212/阿迪朗达克dirondack 5
220/热大陆性亚区
Hot Continental
25
221/东部阔叶林(海生)
Eastern Broadleaf Forest (Oceanic)
11
222/东部阔叶林(陆生)
Eastern Broadleaf Forest (Continental)
4
M221/中阿巴拉契亚阔叶林
Central Appalachian Broadleaf Forest
5
M222/密苏里州阔叶林
Ozark Broadleaf Forest
5
230/亚热带亚区
Subtropical
7
231/东南部混交林
Southeastern Mixed Forest
1
232/外海岸平原混交林
Outer Coastal Plain Mixed Forest
4
M231/沃希托混交林-草甸
Ouachita Mixed Forest-Meadow
2
240/海洋亚区
Marine
35
M242/喀斯喀特混交林
Cascade Mixed Forest
35
250/草原亚区
Prairie
1
251/草原稀树高原(温)
Prairie Parkland (Temperate)
1
260/地中海亚区
Mediterranean
27
261/加州沿海森林和灌木林
California Coastal Chaparral Forest and Shrub
1
262/加州干旱草原
California Dry Steppe
1
263/加州干旱草原
California Dry Steppe
2
Ⅰ级生态区大区Domain Ⅱ级生态区亚区Division Ⅲ级生态区小区Province
编号/
名称
NWSR
数量(个)
编号/
名称
数量
(个)
编号/
名称
数量
(个)
M261/内华达山区干草原-混交林
Sierran Steppe-Mixed Forest
16
M262/加州沿海稀疏丛林
California Coastal Range Open Woodland
7
300/干旱Dry
58
310/热带/亚热带草原亚Tropical/Subtropical Steppe 4
313/科罗拉多高原半荒漠
Colorado Plateau Semi-Desert
2
M313/亚利桑那-新墨西哥州山脉
Arizona-New Mexico Mountains
2
320/热带/亚热带沙漠Tropical/Subtropical
Desert
0
0
330/温带草原
Temperate Steppe
54
331/大平原-帕卢斯干旱区
Great Plains-Palouse Dry
22
332/大平原草原
Great Plains Steppe
1
M331/南落基山脉草原
Southern Rocky Mountains Steppe
5
M332/中落基山脉草原
Middle Rocky Mountains Steppe
18
M333/北落基山脉森林草原
Northern Rocky Mountains Forest-Steppe
2
341/山间半荒漠和荒漠
Intermountain Semi-Desert and Desert
1
342/山间半荒漠
Intermountain Semi-Desert
24
340/温带荒漠
Temperate Desert
1
M341/内华达-犹他州山脉半荒漠
Nevada-Utah Mountains Semi-Desert
1
400/热湿润
Humid
Tropical
4
410/稀树草原
Savanna
4
411/大沼泽地
Everglades
1
420/稀树草原山脉
Savanna Regime
Mountains
M411/波多黎各
Puerto Rico
3