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
|