来自全球的研究人员通过分析483个热带树木年轮序列，首次系统评估了1930年以来干旱对热带森林茎生长的长期影响。研究发现，在最干旱的年份中，茎生长仅出现2.5%（95%CI:2.2-2.7%）的微弱下降，且这种下降通常不持续到干旱年后。值得注意的是，裸子植物（gymnosperms）比被子植物（angiosperms）更易受旱季干旱影响，而雨季干旱对后者影响更大。该研究揭示了热带森林碳汇功能对历史 ...

Thanks to Harriet Rix and her sublime book, The Genius of Trees, I have seen and relished the world the day before the ...

Within seed plants angiosperms are distinguished from gymnosperms by maternal investment which follows rather than precedes fertilization. An endosperm, containing a larger dose of maternal than of ...

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Phylogenetic relationships of 27 taxa of extant and extinct lignophytes were assessed in a numerical cladistic analysis using 65 characters. The analysis yielded 12 most parsimonious trees, where ...

Find out about Queensland’s native plants. Queensland has over 8000 native flowering plants and more than 1500 non-flowering plants (gymnosperms, ferns, mosses).

Hal Jensen Recreation Center, 2403 N. Izabel St., Flagstaff. 928-213-2761. 8 a.m.-noon, FREE - Let's wrap up Parks & ...