揽瓜阁阅读做题小分队 第112天 安第斯山脉

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The Andean cordillera is made up of many interwoven mountain ranges, which include high intermontane plateaus, basins, and valleys. The Northern Andes contains several broad ecosystems falling into four altitudinal belts. Its northern subregion is distinguished from the rest of the region by higher relative humidity and greater climatic symmetry between the eastern and western flanks of the range. The Central Andes are characterized by a succession of agricultural zones with varied climatic conditions along the mountains’ flanks and by large, high-altitude plateaus, variously called puna or altiplano, which are not present in the Northern Andes. The soil fertility of the northern altiplano is generally good. The western Central Andean ranges are relatively arid with desert-like soils, whereas the eastern ranges are more humid and have more diverse soils. The eastern slopes of the Central Andes in many ways are similar to the wet forests of the Northern Andes. Unlike the Northern Andes, however, these slopes have a dry season.

Extreme topography and climate make regional weather projections in the Andean cordillera difficult. For example, while air temperature generally decreases with increasing altitude, variability of mountain topography can produce much lower than expected air temperatures. Vegetation can also be unpredictable, although certain general patterns are discernible. At the regional or macroscale level, vegetation patterns in the Northern and Central Andes tend to reflect climatic zones determined by latitude and altitude. At the local or mesoscale level, however, this correspondence becomes less precise, as local variations in soil type, slope, drainage, climate, and human intervention come into play.

1. Based on the passage information, which of the following characterizes the northern part of the Central Andes’ high-altitude plateaus?
(A) high relative humidity
(B) fertile soil
(C) a succession of agricultural zones
(D) extremes in air temperature
(E) an arid climate

2. Based only upon the information in the passage, which of the following is a characteristic of the Central Andean cordillera that clearly distinguishes it from the Northern Andean cordillera?
(A) an arid climate
(B) a sparse human population
(C) wet forests
(D) a humid climate
(E) a dry season

3. Which of the following statements about vegetation patterns in the Andean cordillera is most strongly supported by the passage?
(A) Local vegetation patterns are determined by the same factors as regional vegetation patterns.
(B) Vegetation patterns vary more widely at the macroscale level than at the mesoscale level.
(C) Vegetation patterns are affected by more factors at the mesoscale level than at the local level.
(D) Some factors affecting vegetation patterns have only a local impact, whereas others have a broader impact.
(E) Human intervention has a greater effect than either altitude or latitude upon vegetation patterns.

参考答案：

BED

setmefree1

1. 介绍安第斯山脉，各个区域相对于其他区域的区别，各个区域的种植、特点
2. 地形和气候使安第斯山脉的区域天气预测困难。分宏观和区域/中观和地方尺度的影响因素
BDD

屯个名字

段段关系：
P1:Andean cordillera的各部分地形特征
P2:（地形特征带来的影响）极端的地形和气候使得安第斯科迪勒拉的区域天气预报变得困难+植被预测困难

P1:
安第斯山脉地形复杂（阐述怎么复杂）
1.北部可分为四个海拔带——其次北部湿度/气候对称性明显高于其西部和东部
2.中部——农业区和高原——且北部没有高原
3. 土壤肥力：北部好，西部中部沙漠土壤，东部土壤多样化
4. 旱季：安第斯山脉中部的东部有旱季，安第斯山脉北部没有

P2:
地形特征带来的影响(extreme-不好的影响)
1.极端的地形和气候使得安第斯科迪勒拉的区域天气预报变得困难——>举例：不完全遵守“海拔升高气温降低”
2.植被预测困难——>在区域或宏观层面上-看纬度和海拔高度; 在局部或中尺度的层面上-更多因素使得预测更不精准

BED（8min）

眯眼笑

BED
第一段：介绍各个Andea的特点
第二段：介绍影响各个山脉不同植被的因素

第二题要取反，原文中讲的是Northen的特点，题目问的是central的特点

fcsmbflgmat700

安第斯山脉——北边的安第斯山脉（2个特征）——中部安第斯（特征）——中部安第斯的西边、东边。
预测区域天气困难。与海拔、地形的关系。区域或宏观层面；地方或中观层面的不同

ccccherry

CED

lfengi

C E D

yu33

BDB

Blanche会努力

BED

vincentm9426

看一下！