[题目]美国航空航天局使用卫星第一次以三维方式量化了非洲撒哈拉沙漠尘埃被搬运到南美洲亚马孙雨林的数量.这些尘埃中包括沙子和南美洲亚马孙雨林植物生长不可缺少的磷等.据此完成下列问题.[1]撒哈拉沙漠尘埃中的沙子.磷进入亚马孙雨林生态系统.可A.促进岩石风化.释放养分 B.随雨水带来可溶性养分C.促进地表径流.带走养分题目和参考答案——青夏教育精英家教网—

题目内容

【题目】美国航空航天局使用卫星第一次以三维方式量化了非洲撒哈拉沙漠尘埃被搬运到南美洲亚马孙雨林的数量，这些尘埃中包括沙子和南美洲亚马孙雨林植物生长不可缺少的磷等。据此完成下列问题。

【1】撒哈拉沙漠尘埃中的沙子、磷进入亚马孙雨林生态系统，可

A.促进岩石风化，释放养分 B.随雨水带来可溶性养分

C.促进地表径流，带走养分 D.促进土壤的淋溶作用

【2】亚马孙热带雨林被称为“地球之肺”，其所指的生态环境效应是

A.促进全球水循环，调节水平衡 B.调节全球气候，维护生态平衡

C.吸收二氧化碳，释放大量氧气 D.地球上功能最强大的生态系统

【答案】

【1】B

【2】C

【解析】

试题分析：

【1】撒哈拉沙漠尘埃中的沙子、磷进入亚马孙雨林生态系统，可随雨水给雨林带来可溶性养分，B对。与促进岩石风化，释放养分无关，A错。不能促进地表径流，不能促进土壤的淋溶作用，C、D错。

【2】亚马孙热带雨林被称为“地球之肺”，其所指的生态环境效应是吸收二氧化碳，释放大量氧气，与肺呼吸功能类似，C对。促进全球水循环，调节水平衡与肺的功能无关，A错。调节全球气候，维护生态平衡，形成地球上功能最强大的生态系统，与肺的主要功能缺少相似性，B、D错。

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