Ecological immigrants knowledge kaodian

(1) outflow; Low latitude and high altitude; High in the northwest and low in the southeast; Rivers flow from northwest to southeast (8 points)

(2)

Ecological immigrants knowledge kaodian

(1) outflow; Low latitude and high altitude; High in the northwest and low in the southeast; Rivers flow from northwest to southeast (8 points)

(2) Yangtze River Basin; Honghe (4 points)

(3) Reason: The Tropic of Cancer passes by; Across the tropics and subtropics; Summer monsoon has great influence and abundant precipitation; There are tall mountains in the west; Vertical regional differentiation is significant; There are many types of climate. (8 points)

(4) Control countermeasures: ① (closing hillsides to facilitate afforestation) to protect vegetation; (2) Returning farmland to forest and grassland (increasing vegetation coverage); ③ Soil and water conservation engineering construction; ④ Adjusting the agricultural structure; ⑤ Implement ecological migration. (8 points)

Test analysis:

(1) According to the types of internal and external flow areas, rivers in Yunnan Province finally flow into the ocean, so it is an outflow area. Kunming, the capital of Yunnan, is located in Yunnan-Guizhou Plateau, with low latitude, high altitude and cool summer. According to the flow direction of the river in the picture, Yunnan Province is high in the northwest and low in the southeast.

(2) This question is simple. Among the six major river basins in Yunnan Province, it can be known from the second material that the Yangtze River basin has the largest soil erosion area, and the Red River basin has the highest proportion of soil erosion in the total basin area.

(3) The natural reasons for the rich plant species in Yunnan Province mainly include location, temperature, precipitation, topography and regional differences. The Tropic of Cancer runs through Yunnan Province and belongs to tropical and subtropical zone, which is greatly influenced by summer monsoon and has abundant precipitation. At the same time, there are tall mountains in the west, and the vertical regional differentiation is remarkable. The climate types in Yunnan Province are diverse.

(4) The terrain in Yunnan Province is rugged and the vegetation is seriously damaged, which leads to soil erosion. In order to control soil erosion, Yunnan province can take measures such as returning farmland to forests and grasslands, adjusting agricultural structure, protecting vegetation, building soil and water conservation projects, and implementing ecological migration.