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中國的水資源問題
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中國的水資源問題
1.
政府就能源問題推行的政政府就能源問題推行的政 策策 溫習溫習
2.
1. 跨區域能源調配政策 2. 加強石油儲備 3.
開發中國西部 4. 厲行節約能源 5. 積極開發核能和可再生能源
3.
輪南 西氣東輸的路線
4.
西電東送的路線 北部通道 中部通道 南部通道
5.
1. 跨區域能源調配政策 2. 加強石油儲備 3.
開發中國西部 4. 厲行節約能源 5. 積極開發核能和可再生能源
6.
7.
• 風能 • 興建與運作成本低 •
產生能源少 • 只可建於常有強風的地方
8.
• 太陽能 • 興建成本高
, 但運作成本低 • 產生能源少 • 必須興建於陽光充沛的熱帶地方
9.
• 水力發電 • 興建成本高
, 但運作成本低 • 必須興建於高地和落差大的河谷的熱帶地方 • 需建於流量大和穩定的河流
10.
• 核能 • 能產生巨大能量 •
不可再生能源 • 宜建於沿海地區 • 不能太接近民居 • 不宜太遠離能源市場
11.
中國能源問 題 供不應求 能源產區距離 消耗中心太遠 能源消費者結構失衡 ( 過分依賴煤炭
) 影響 依賴進口 , 影響中國經 濟 影響 經濟得不到 充分的發展 影響 • 空氣污染 • 煤礦意外上升 • 交通網路負擔沉重 解決方 法 跨區域能源 調配政策 加強石油儲備 開發中國西部 厲行節約能源 積極開發核能 和可再生能源
12.
中國的水資源問題中國的水資源問題
13.
新聞分析新聞分析
14.
1) 從資料可見 ,
中國當前面對甚麼問題 ? 2) 為甚麼會出現這個問題 ? 3) 中國政府以甚麼方法解決上述問題 ?
15.
16.
十五吋等雨 線
17.
18.
19.
解決方法解決方法 :: 南水北南水北 調調
20.
•把長江流域豐富的水資源抽調一部分送到華北、西 北,以緩解那些地區的缺水情況。 •南水北調工程有東線、中線和西線三條調水線路。
21.
22.
中國水利部官方南水北調的網站 : ht t
p://www.nsbd.mwr.g o v.c n/
23.
南水北調的好處
24.
• 長江水量豐富,每年有大量的水流入大 海,調一部分到北方缺水地區可解決北 方的缺水問題。 解決人民基本需要
25.
南水北調的問題
26.
1. 對南方的影響 南水北調調水量過多可能會使長江的水量不 足,影響長江河道的航運,長江口的咸潮加 深,更有可能引發生態危機。 2. 成本過高 南水北調成本已經高於現有的海水淡化成本 ,目前最低的海水淡化成本為
3 元,而南水 北調目前成本為 10 元,已經高于海水淡化 成本
27.
中國的水資源問題 北部缺水原因 1) 降雨量不足 2) 人民用水量增加 情況 解決方法 1)
黃河乾旱、斷流 2) 出現旱災 南水北調 問題好處 解決北方缺水問題 1) 引發生態危機 2) 成本過高
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