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    環保主題征文與環保同行征文二等獎作品:人類睡醒了

    時間:    點擊: 次    來源:    作者: - 小 + 大

     古往今來,地球媽媽用甘甜的乳汁哺育了無數代子孫。原來的她被小輩們裝飾得楚楚動人。可是,現在人類為了自身的利益,將她折磨得天昏地暗。人類只有一個地球;而地球正面臨著嚴峻的環境危機。“救救地球”已成為世界各國人民最強烈的呼聲。
        我為周圍環境的惡化而感到心痛,我想:作為未來接班人的青少年,如果不了解人類環境的構成和環境問題的嚴重性,無視有關環境保護的法律法規,不去增強環境保護意識,自覺履行保護環境的義務的話,我們的生命將毀在自己的手中,老天將對我們作出嚴厲的懲罰。為此我下定決心要從我做起愛護環境,保護我們這個賴以生存的家園,做一個保護環境的衛士。
        我們可愛的地球
         在全世界以柴禾為燃料的人口中,我國農民占一半左右。由于森林的大量砍伐,我國農村普遍存在著燒柴短缺的問題,這種狀況使農民將一切有機質能源,如稻草、秸桿、蒿草等充作薪柴,使有機質不能還田,土壤條件惡化,破壞了農村生態平衡。干旱地區,過度砍伐則易引起沙漠化,干旱和荒漠地區植物生長緩慢!由于人口發展對薪柴的需求量不斷增加,因而砍伐林木的數量有增無減,許多干旱荒漠地帶的天然耐旱耐寒植物,正以驚人的速度消耗甚至滅絕,西北部許多地區迅速沙化,這種現象如果不加以制止,其次是氣候規律失衡。
    缺少了氧氣的供給,也少了一個防風固沙的了。氣溫會升高,制造成了氣候的不規律的變化
        被砍伐的樹木
        “中國是一個中度缺水的國家”,水利部水資源司司長吳季松說,這是從水資源對社會經濟發展的支撐能力上得出的判斷。據統計,我國目前缺水總量估計為400億立方米,每年受旱面積200萬~260萬平方千米,影響糧食產量150億~200億千克,影響工業產值2000多億元,全國還有7000萬人飲水困難。缺水對環境和人的身心健康都有著嚴重的影響。

      從人口和水資源分布統計數據可以看出,中國水資源南北分配的差異非常明顯。長江流域及其以南地區人口占了中國的54%,但是水資源卻占了81%。北方人口占46%,水資源只有19%。專家指出,由于自然環境以及高強度的人類活動的影響,北方的水資源進一步減少,南方水資源進一步增加。這個趨勢在最近20年尤其明顯。這就更加重了我國北方水資源短缺和南北水資源的不平衡。

        最近幾年,北方連年干旱。如果說北方資源性缺水日益嚴重令人憂心,南方的狀況也并不樂觀。專家指出,南方地區由于不注意污水的處理,把未經處理的污水大量排到天然河道,污染了水體,影響了水資源的有效性,造成有水不能用,形成了水質性缺水的嚴重狀況。受大陸季風氣候的影響,中國水資源在季節上分布極不均勻,總是連枯連澇。時間上不均勻的水資源的變化需要由水庫來調節。建國以來,我國興建了大量水庫,但由于水源工程建設投資額大,投資回報率不高,難以吸引更多建設資金。這種由工程滯后原因造成的工程型缺水在中部和西部地區尤其明顯。
        慘堵的一幕
        自來水不是“自來的”,水資源也是有限的,必須科學合理地加以利用,提高水資源的重復利用率。讓我們每個人,從自身做起,從小事做起,節約用水,為了我們人類更好的明天,貢獻自己的力量!
        愛的行動
        我們離不開賴以生存的地球,共同的命運把我們聯系在一起,大自然叔叔多么盼望它能回到家園,地球母親把重任托付在人類的身上,因為只有我們才能挽回地球和人類的幸福:讓綠色不再嘆息,大自然不再哭泣,讓地球母親的傷痕消失,讓明天的地球更加美麗、堅強、可愛!

    上一篇:西藏:天更藍 水更清 人與自然更和諧

    下一篇:環保主題征文與環保同行征文二等獎作品:那年那月那片天

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