为什么演替后期常出现竞争与散播的权衡？
Why do trade-offs between competition and dispersal shape late succession?
早期物种靠快速散播占领空地，后期物种靠竞争优势立足，资源水平和干扰频率决定谁占主导。
Early species win by fast dispersal, later ones by competitive ability, with resources and disturbance frequency deciding dominance.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Urry 等,《Campbell Biology》第11版,Pearson,2017
L. A. Urry et al., Campbell Biology, 11th ed., Pearson, 2017
独立核验依据 · Independent verification: 核验依据 2 ISBN 978-0-13-409341-3 (11th ed., Pearson)
#演替 #竞争散播
火灾在一些生态系统中为什么是必要的过程？
Why is fire a necessary process in some ecosystems?
在松林和稀树草原，火能打破种子休眠、清除竞争者并回补养分；一味抑制火反而会让系统退化。
In pine forests and savannas, fire breaks seed dormancy, clears competitors, and recycles nutrients; suppressing it degrades the system.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Urry 等,《Campbell Biology》第11版,Pearson,2017
L. A. Urry et al., Campbell Biology, 11th ed., Pearson, 2017
独立核验依据 · Independent verification: 核验依据 2 ISBN 978-0-13-409341-3 (11th ed., Pearson)
#火 #生态过程
生态恢复（例如废弃矿场复绿）和天然演替有什么关系？
How is ecological restoration related to natural succession?
恢复生态学常模仿或加速次生演替：先种先锋植物改良土壤，再引入后期物种重建群落。
Restoration ecology mimics or accelerates secondary succession, using pioneer plants to improve soil before later species return.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Urry 等,《Campbell Biology》第11版,Pearson,2017
L. A. Urry et al., Campbell Biology, 11th ed., Pearson, 2017
独立核验依据 · Independent verification: 核验依据 2 ISBN 978-0-13-409341-3 (11th ed., Pearson)
#生态恢复 #演替