不是森林锐减而导致的后果的是（ ）
A．酸雨更加严重
B．洪水灾害增多
C．物种减少，甚至灭绝
D．气候变得干旱
树木具有很强的降尘能力，净化空气．涵养水源，保持水土、增加降雨量的作用．如果森林锐减就有可能洪水灾害增多、气候变得干旱、水土流失等，同样森林生态系统也是很多生物的生活家园，如果森林锐减，很多生物的栖息地丧失，生存受到威胁，造成物种减少，甚至灭绝．而酸雨是工业高度发展而出现的副产物，由于人类大量使用煤、石油、天然气等化石燃料，燃烧后产生的硫氧化物或氮氧化物，在大气中经过复杂的化学反应，形成硫酸或硝酸气溶胶，或为云、雨、雪、雾捕捉吸收，降到地面成为酸雨．它会危害到森林，但森林锐减不会导致酸雨更加严重．
故选：A
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