Today in our environmental science lecture, we're discussing the impact of urban development on local wildlife. A recent study in Melbourne found that when green spaces are replaced with buildings, bird species diversity drops by nearly 40%. However, the study also noted that planting native trees and shrubs in parks can mitigate this effect. For example, areas with at least 30% native vegetation retained most of their original bird populations. Interestingly, the research showed that introduced species, like sparrows, actually increased in urban areas, but they don't provide the same ecological benefits as native birds. So, the key takeaway is that careful planning of urban green spaces is crucial for preserving biodiversity.
❓ 멜버른에서 진행된 연구는 조류 종 다양성에 대해 무엇을 발견했는가?
A. A. 녹지 공간이 건물로 대체되었을 때 40% 증가했습니다.
B. B. 녹지 공간이 건물로 대체되었을 때 거의 40% 감소했습니다.
C. C. 토종 나무를 심은 경우에는 변화가 없었다.
D. D. 그것은 토착 식생이 30% 미만인 지역에서만 감소했다.
✅ 正确答案
B. It dropped by nearly 40% when green spaces were replaced with buildings.