The Solomon Islands archipelago is part of two distinct terrestrial ecoregions. Most of the islands are part of the Solomon Islands rain forests ecoregion, which also includes the islands of Bougainville and Buka; these forests have come under pressure from forestry activities. The Santa Cruz Islands are part of the Vanuatu rain forests ecoregion, together with the neighbouring archipelago of Vanuatu. Soil quality ranges from extremely rich volcanic (there are volcanoes with varying degrees of activity on some of the larger islands) to relatively infertile limestone. More than 230 varieties of orchids and other tropical flowers brighten the landscape. Mammals are scarce on the islands, with the only terrestrial mammals being bats and small rodents. Birds and reptiles, however, are abundant.The islands contain several active and dormant volcanoes. The Tinakula and Kavachi volcanoes are the most active.
The Solomon Islands archipelago is part of two distinct terrestrial ecoregions. Most of the islands are part of the Solomon Islands rain forests ecoregion, which also includes the islands of Bougainville and Buka; these forests have come under pressure from forestry activities. The Santa Cruz Islands are part of the Vanuatu rain forests ecoregion, together with the neighbouring archipelago of Vanuatu. Soil quality ranges from extremely rich volcanic (there are volcanoes with varying degrees of activity on some of the larger islands) to relatively infertile limestone. More than 230 varieties of orchids and other tropical flowers brighten the landscape. Mammals are scarce on the islands, with the only terrestrial mammals being bats and small rodents. Birds and reptiles, however, are abundant.The islands contain several active and dormant volcanoes. The Tinakula and Kavachi volcanoes are the most active.
索羅門群島有多少生態區？
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