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# Peran Rusa Kutub dalam Memerangi Pemanasan Global
Derajat energi matahari yang dipantulkan kembali ke permukaan bumi disebut albedo. Salju dan es memiliki albedo tertinggi di planet ini, karena permukaannya yang putih cemerlang sangat baik dalam memantulkan cahaya dan energi panas kembali ke luar angkasa. Namun, ketika tertutup oleh semak belukar, daya reflektifnya berkurang.
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Permukaan kutub yang putih dapat memantulkan cahaya dan energi panas (techno.okezone.com)
Dipimpin oleh Dr Mariska te Beest dari Universitas Umeå di Swedia, tim peneliti mempelajari pengaruh pola penggembalaan rusa terhadap laju pencairan tanah di bawahnya. Ditemukan bahwa dengan menyedot semak-semak dan tanaman lain yang mengancam menutupi salju dan es, rusa kutub sebenarnya meningkatkan reflektivitas tanah, sehingga memperlambat penyerapan panas oleh bumi dan membatasi pencairan es.
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