【題目】河北省遷西縣位于燕山東麓長城腳下,立足山區(qū)優(yōu)勢,堅持科學(xué)發(fā)展,在國內(nèi)首創(chuàng)了“圍山轉(zhuǎn)”的模式。該模式是在山區(qū)根據(jù)地形環(huán)境的特點,依據(jù)山體高度布置等高環(huán)形種植帶,形成了“山頂松槐戴帽,山間板栗纏腰,山腳瓜果梨桃”的立體綠化模式,森林覆蓋率達(dá)到62%,成為“全國綠化模范縣”和“國家級生態(tài)示范區(qū)”。

據(jù)此回答下列各題。

1“圍山轉(zhuǎn)”模式符合我國山區(qū)農(nóng)業(yè)生產(chǎn)發(fā)展方向,主要表現(xiàn)在

①發(fā)展生態(tài)農(nóng)業(yè)

②發(fā)展旅游光觀農(nóng)業(yè)

③因地制宜發(fā)展農(nóng)業(yè)

④農(nóng)林牧漁全面發(fā)展

A. ①② B. ①③ C. ②③ D. ②④

2“圍山轉(zhuǎn)”模式對當(dāng)?shù)厣鷳B(tài)環(huán)境產(chǎn)生的影響是

A. 水土流失減少 B. 大氣濕度減少

C. 地下水減少 D. 生物多樣性減少

【答案】

1 B

2 A

【解析】

我國是一個地形復(fù)雜多樣,山地面積廣大的國家,加上陡峭的高原和丘陵,我國的山區(qū)面積占三分之二,可以充分利用山地發(fā)展立體農(nóng)業(yè),以解決我國耕地不足問題。

1“圍山轉(zhuǎn)”模式符合我國山區(qū)農(nóng)業(yè)生產(chǎn)發(fā)展方向,主要表現(xiàn)在發(fā)展生態(tài)農(nóng)業(yè)和因地制宜發(fā)展農(nóng)業(yè),并不是發(fā)展旅游觀光農(nóng)業(yè),也沒有涉及到漁業(yè),故選B。

2“圍山轉(zhuǎn)”模式是充分地利用了山地的各個位置發(fā)展農(nóng)業(yè),因地制宜利用資源,對當(dāng)?shù)厣鷳B(tài)環(huán)境產(chǎn)生的影響是減少水土流失問題,故選A。

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