Table 4.
Characteristics | Lowland | Highland |
---|---|---|
Location |
Southeast of Zhejiang Province, China. Lowland area. |
Northwestern of Sichuan Province, Tibetan Plateau in Southwest China. |
Altitude | 10 meters. | More than 3,300 meters. |
Climate | Central Asian tropical monsoon climate zone, with four distinct seasons and abundant rainfall. | Continental plateau monsoon type. No summer. Frost and snow occur in fourth seasons, and the atmospheric oxygen content is <60% of the standard. |
Sunshine | Annual sunshine between 1,442 and 2,264 h. | Average annual sunshine about 2,451.1 h. |
Time of sunrise and sunset | ||
Summer solstice | Sunrise at 5:01 sunset at 18:56. | Sunrise at 6:12 sunset at 20:28. |
Winter solstice | Sunrise at 6:44 sunset at 17:06. | Sunrise at 8:16 sunset at 18:18. |
Temperature |
Annual average temperature is 17.3–19.4°C. Average temperature in January is 4.9–9.9°C. Average temperature in July is 26.7–29.6°C. |
Annual average temperature is −0.16°C. Average temperature in January is −11.1°C. Average temperature in July is 9.9°C. |
Rainfall |
Annual precipitation between 1,113 and 2,494 mm. Raining season comes at the end of spring and early summer. Tropical cyclone happens between July and September. Frost-free period is 241–232 days. |
Average precipitation 65.4 mm, and mostly happens during June to September. Average frost-free period is 21 days. Areas with higher altitude has no absolute frost-free period. |