Chapter 17 15 Biomes Ecosystems 1
1 Chapter 17 & 15 Biomes & Ecosystems
Chapter 17 Biomes 世界生物群落类型 2
2 Chapter 17 Biomes 世界生物群落类型
·1What's biomes(生物群落) 2 Distribution characteristics of biomes 群落分布规律 3 Earth's major biomes 世界主要生物群落类型 3
3 • 1 What’s biomes (生物群落） • 2 Distribution characteristics of biomes 群落分布规律 • 3 Earth’s major biomes 世界主要生物群落类型
What's biomes? Biomes are defined as: "the world's major communities, classified according to the predominant vegetation(植被) and characterized by adaptations of organisms to that particular environment"(Campbell 1996) 4
4 What’s biomes? • Biomes are defined as ： “the world‘s major communities, classified according to the predominant vegetation（植被） and characterized by adaptations of organisms to that particular environment" (Campbell 1996)
Distribution characteristics of biomes 群落分布规律 Climates (especially the average temperature and precipitation)determine the biomes 温度和降水（水热结合）决定生物群落类型 Latitude,Longitude,and Elevation intensively affect the regional climates,thus,they are basic geographic elements that determine the zonal distribution of the biomes-一“Latitude zonality"”, “Longitude zonality",and“Vertical zonality” 纬度，经度和海拨是决定群落地带性分布的地理要素（纬度地 带性，经度地带性，垂直地带性-“三向地带性”) 5
5 • Climates (especially the average temperature and precipitation) determine the biomes 温度和降水（水热结合）决定生物群落类型 • Latitude, Longitude, and Elevation intensively affect the regional climates, thus, they are basic geographic elements that determine the zonal distribution of the biomes—“Latitude zonality”, “Longitude zonality”, and “Vertical zonality” 纬度，经度和海拨是决定群落地带性分布的地理要素(纬度地 带性，经度地带性，垂直地带性-“三向地带性”) Distribution characteristics of biomes 群落分布规律
(1)Horizontal Zonality水平地带性 ①Latitude zonality纬度地带性 The angle of the sun's rays -Temperature When the latitude increase1°，the sun temperature will decrease0.5-0.7℃ 6
6 (1) Horizontal Zonality 水平地带性 • ① Latitude zonality 纬度地带性 The angle of the sun's rays The angle of the sun's rays Temperature Temperature When the latitude increase 1 °, the temperature will decrease 0.5-0.7 ℃
世界植被纬度地带性分布规律： 赤道向两极依次出现：热带森林-落叶阔叶林-针叶林-苔原-极地。 Latitude Tropical Deciduous Coniferous Tundra (herbs, Polar ice Forest Forest Forest lichens,mosses)and snow 7
7 世界植被纬度地带性分布规律： 世界植被纬度地带性分布规律： 赤道向两极依次出现：热带森林 赤道向两极依次出现：热带森林 -落叶阔叶林 -针叶林 -苔原 -极地
(1)Horizontal Zonality水平地带性 ②Longitude zonality 经度地带性 -15 Longitude precipitation (降水) -10 极地 冻原等料高山 平 冷温带 Desert-Grassland-Forest 恭加 年平均降水(cm) 度 温带林 c10 腰 15 丛 温微 草原 丽 暖温带 20 漠 稀附草原 25 刺 疏 热带 季丽林 热带雨林 热带 30 蒸 8 50 100150200 250300350400450
8 (1) Horizontal Zonality 水平地带性 • ② Longitude zonality 经度地带性 Longitude Longitude precipitation precipitation（降水） Desert -Grassland Grassland -Forest
(2)Vertical Zonality垂直地带性 Elevation -Temperature,Precipitation Elevation Mountain ice and snow 一树线 Tundra (herbs, 针叶林 lichens,mosses) Coniferous 落叶叶林 Forest 山地阔叶林，问邮为荒漠或草敞 Deciduous 热查林 Forest Tropical Forest 漠或草原 落叶叶林 针林 树 图411山地植被垂直分布规律（引自郝道猛，1978） 9
9 (2) Vertical Zonality 垂直地带性 Elevation Elevation Temperature, Precipitation Temperature, Precipitation
80 PACIFIC 40 NORTH OCEAN ATLANTIC TropicofCancer OCEAN PACIFIC 20 OCEAN Tropical Rainforest including Monsoon Forest) Tropical Savanna 6080 INDIAN Desert OCEAN Temperate Grassland 2 SOUTH Temperate Forest ATLANTIC OCEAN Mediterranean Scrub Northern Coniferous Forest SOUTHERN OCEAN Tundra Antarctic Circle Ice FIGURE 26-1 Global distribution of the principal terrestrial biomes
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