土壤“微食物网”（微生物-线虫-跳虫）如何驱动养分循环？
How does the soil 'microfood web' (microbes–nematodes–springtails) drive nutrient cycling?
微生物分解枯落释放矿质养分，线虫等微型动物捕食微生物调控其数量与活性，跳虫破碎有机质增大表面积，层层传递给植物可利用的氮磷，是地下养分的“发动机”。
Microbes decompose litter releasing mineral nutrients; microfauna like nematodes graze microbes, regulating their activity, while springtails shred litter, all passing plant-available N and P—the engine of belowground nutrients.
难度 专业 · 适合 小学高段(9-12)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：此条未指向带版次的可引用著作（通识性内容、机构文件或未展开的英文书名），本库不提供独立书目出处；如需精确引用，需由编辑补全具体篇目与版次。
Soil Biology & Biochemistry
Soil Biol Biochem
#微食物网 #土壤动物 #养分
苔藓和地衣为什么能当空气污染的“指示生物”？
Why can mosses and lichens indicate air pollution?
它们直接从空气吸收水分和养分、没有真正根系保护，对二氧化硫、重金属和氮沉降极敏感，种类和盖度的变化能反映当地污染水平。
They absorb water and nutrients straight from air without root protection, so they are very sensitive to SO2, heavy metals and N deposition; shifts in species and cover reveal local pollution.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Odum & Barrett,《Fundamentals of Ecology》第5版,Brooks/Cole,2004
E. P. Odum and G. W. Barrett, Fundamentals of Ecology, 5th ed., Brooks/Cole, 2004
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL3334843W：Fundamentals of ecology
#地衣 #苔藓 #生物指示
一克健康土壤里大约住着多少微生物？
Roughly how many microbes live in a gram of healthy soil?
一克肥沃土壤里可能有数十亿计的细菌，还有真菌、原生动物等，数量比地球上的人还多，它们是土壤健康的“小工人”。
A gram of fertile soil can hold billions of bacteria plus fungi and protists—more than all humans on Earth—the tiny workers of soil health.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Odum & Barrett,《Fundamentals of Ecology》第5版,Brooks/Cole,2004
E. P. Odum and G. W. Barrett, Fundamentals of Ecology, 5th ed., Brooks/Cole, 2004
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL3334843W：Fundamentals of ecology
#土壤微生物 #细菌 #土壤健康