Results 11 to 20 of about 1,421,452 (154)
Shuitu Baochi Xuebao, 2008 研究了干旱区绿洲种植年限不同的3种苜蓿地0-10 cm,10-20 cm土层土壤微生物量碳、微生物量氮、微生物量商、呼吸强度和代谢商的变化特征。结果表明:在耕层0-20 cm范围内,苜蓿种植年限的长短对土壤微生物量碳、土壤微生物量氮含量有影响,相对来说微生物量碳、氮在四年生苜蓿地的含量最高,其次是一年生苜蓿地的。不同种植年限苜蓿地之间土壤微生物量商(qMB)、呼吸强度、代谢商(qCO2)差异显著,相对来说种植年限相差越大,差异越大。相关分析结果表明,土壤理化特性对土壤微生物活性有影响,其中土壤微生物量碳、
YANG, JIANG, ZHAI, YANG, JIANG
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Climate and Land-Use Changes Predicted to Jointly Drive Soil Fungal Diversity Losses in One-Third of North American Coniferous Forests. [PDF]
Glob Chang BiolThis study assessed the potential impacts of climate and land‐use change on soil fungal diversity across four North American biomes. We found that climate change typically caused both diversity losses and gains, particularly in coniferous forests and among arbuscular mycorrhizal fungi, whereas land‐use change mainly reduced diversity, especially in ...
Luo W +5 more
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Shuitu Baochi Xuebao, 2020 选择黄土高原森林带自东向西8个地区优势植物的土壤作为研究对象，探究不同经度下土壤养分和土壤微生物生物量生态化学计量特征。结果表明：土壤碳、氮和微生物生物量碳、氮、磷含量随经度整体呈现出先减少后增加的变化趋势，土壤微生物生物量碳氮磷与土壤碳氮之间存在耦合关系，对环境因子的响应具有-致性。土壤磷含量空间分布比较稳定。土壤碳氮比为8左右，土壤有机碳与全氮的空间分布具有-致性。土壤微生物生物量碳氮比为9左右，微生物生物量氮磷比为5左右，反映了土壤微生物生物量碳氮、氮磷的比值较稳定 ...
贾培龙 +5 more
doaj
Shuitu Baochi Xuebao, 2003 通过对浙江省天台铅锌银矿区侵蚀土壤的微生物活性以及微生物群落功能多样性研究,结果表明:人为开矿使矿区土壤环境呈现不同层次的加速侵蚀特征。矿区侵蚀土壤的几种重金属含量比无明显侵蚀土壤有明显的增加,且其基本理化性质相应变差。矿区侵蚀土壤微生物特征发生了显著的变化,与无明显侵蚀土壤相比,微生物生物量和可培养细菌数量显著降低,但土壤基础呼吸和微生物代谢商(qCO2)值却明显升高。Biolog测试结果显示,随着土壤侵蚀程度的加剧,其微生物群落结构亦发生了相应改变,侵蚀土壤微生物群落的丰富度、多样性指数 ...
滕应 黄昌勇 龙健 姚槐应 刘方
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Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Root activity creates unique microbial hotspots in the rhizosphere by influencing the metabolic activities of surrounding soil microorganisms, profoundly regulating the dynamics of soil organic carbon (SOC). However, how root economic strategies affect the formation and
Qiyu Tan +8 more
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塔里木沙漠公路防护林土壤微生物生物量与土壤环境因子的关系 [PDF]
, 2009 为探讨极端干旱区风沙土土壤微生物与土壤环境因子的作用规律,采用相关分析法研究了塔里木沙漠公路防护林地土壤微生物生物量与理化因子和酶活性的关系.结果表明:土壤容重和粒径减小(R0.85)时,防护林地中土壤微生物数量和生物量有增大趋势,由容重与微生物量的相关性主导;土壤养分含量与土壤微生物数量和生物量呈正相关,主要由速效养分和放线菌、微生物生物量C、P的相关性所致;土壤酶活性与土壤微生物数量和生物量的相关性差异较大,R在0.51～0.91,主要取决于蔗糖酶、磷酸酶与放线菌、微生物量C的相关 ...
雷加强 +7 more
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Functional Ecology, Volume 40, Issue 7, Page 2068-2082, July 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Grasslands worldwide are experiencing severe degradation due to overgrazing, climate change and anthropogenic disturbances, resulting in substantial declines in biodiversity and ecosystem functioning.
Xiaoqi Wang +5 more
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Functional Ecology, Volume 40, Issue 7, Page 2128-2142, July 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Soil organic nitrogen (SON) transformation is critical for global nutrient cycling and ecosystem productivity, yet how its responsiveness to climate change differs across diverse land use types remains poorly resolved.
Xinyi Yang +10 more
wiley +1 more source
Shuitu Baochi Xuebao, 2006 大田试验研究了保护性耕作对土壤微生物量、活跃微生物量、土壤呼吸、呼吸商、土壤酶的影响。结果表明，秸秆还田能够显著提高土壤微生物量碳和活跃微生物量，深松耕还田能显著提高土壤活跃微生物量。随耕作作业之后时间的推迟，活跃生物量减小。秸秆还田初期（小麦越冬期）能显著提高土壤呼吸作用，提高99．7％；后期（小麦播种期）能显著降低土壤呼吸，降低16．6％。随耕作作业之后时间的推迟，秸秆还田和保护性耕作都会减少农田向大气中CO2的排放，减少土壤碳库的亏损。深松耕还田显著提高土壤脲酶、蔗糖酶活性 ...
王芸 +7 more
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Functional Ecology, Volume 40, Issue 7, Page 2221-2236, July 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Anthropogenic nitrogen (N) deposition is a major driver of global change. However, its effects on the developmental plasticity of plant nutrient strategies remain poorly understood.
Quan Li +11 more
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