Results 31 to 40 of about 523,255 (155)
, 2017 揭示西安地区第5层古土壤中还原层的类型和水分平衡,对认识西安地古土壤发育时的气候和植被以及地下水补给来源具有重要科学意义。通过对西安地区第5层古土壤(S5)的调查和多个剖面的观察,在西安东郊任家坡剖面、南郊双竹村剖面和蓝田田家坡剖面首次发现该层古土壤黏化层中含有1~5mm大小的低价氧化铁的灰绿色斑点。低价铁的灰绿色斑点是在地势较高和地下水位较深的还原作用下形成的,属于高位还原层,不同于以往认识的潴育化类型。灰绿色斑点指古土壤发育时土壤中上部出现了雨季积水并处于还原环境,当时雨季还原层含水量达到了饱和状态,
邵天杰[1] +4 more
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Lithology modulates soil priming effect via resource limitations and bacterial community structure
Functional Ecology, Volume 40, Issue 1, Page 176-190, January 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract The soil priming effect (PE), triggered by root exudate inputs that stimulates microbial activity and drives significant soil carbon (C) losses in terrestrial ecosystems.
Xinyu Hou +4 more
wiley +1 more source
岷江上游森林/干旱河谷交错带不同土地利用类型土壤有机碳和活性有机碳特征
Shuitu Baochi Xuebao, 2011 研究了岷江上游森林/干旱河谷交错带川滇高山栎次生林、人工刺槐林、灌木林地、灌丛地、经济林和农耕地6种土地利用类型的土壤有机碳及微生物量碳、水溶性有机碳和易氧化碳。结果表明:6种土地利用类型土壤有机碳及3种活性有机碳含量以川滇高山栎次生林高于或显著高于其他土地类型 ...
王晓君 +3 more
doaj
Conservation Biology, Volume 39, Issue 5, October 2025.Abstract Primates, 69% of which are threatened with extinction, are the third most specious order of mammals. We used primates as model taxa to examine the umbrella effects of primates on ecosystem services and the protection of other vertebrates and seed plants in Yunnan Province, China.
Yin Yang +21 more
wiley +1 more source
Functional Ecology, Volume 39, Issue 9, Page 2327-2341, September 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract While elevational patterns of soil bacterial and fungal communities in mountain ecosystems have been well documented, the assembly processes of soil archaeal and protistan communities, and their linkage with ecosystem multifunctionality (EMF), remain poorly understood ...
Bao‐Min Yao +14 more
wiley +1 more source
Shuitu Baochi Xuebao, 2021 为探讨植被类型及生长季阶段对土壤碳氮磷生态化学计量特征的影响，揭示黄土丘陵区陆地生态系统养分限制及循环规律。以黄土丘陵区典型荒草地（Grassland）、苜蓿（Medicago Sativa）地、沙棘（Hippophae rhamnoides）灌木地、文冠果（Xanthoceras sorbifolium）林地、云杉（Picea asperata）林地为研究对象，分析其0—60 cm土壤有机碳（SOC）、全氮（TN）、全磷（TP）含量及化学计量比特征在植被类型间及生长季阶段内的差异。结果表明：（1 ...
刘帅楠 +5 more
doaj
Functional Ecology, Volume 39, Issue 6, Page 1550-1566, June 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract Forests store substantial amounts of soil organic carbon (SOC), but SOC stocks differ strongly between forest ecosystems dominated by arbuscular mycorrhizal (AM) or ectomycorrhizal (EcM) fungi.
Mengxu Zhang +10 more
wiley +1 more source
Indian Pangolin in Lamjung Requires Urgent Attention 尼泊尔拉姆琼县地区的印度穿山甲急需关注
Wildlife Letters, Volume 2, Issue 4, Page 204-213, December 2024.This study documented the first evidence of the Indian pangolin in Lamjung district, Nepal, finding three burrows and rescue evidence in Simalchaur Naringhat Community Forest. The burrows identified at an elevation of 530 m and characterized by moderate crown and ground cover (26%–50%), a 25° slope, and predominantly red soil, are indicative of a ...
Asmit Neupane +4 more
wiley +1 more source
Shuitu Baochi Xuebao, 2006 以重庆岩溶地区为例，探讨岩溶地区土壤类型的多样性与不同土壤类型上土地利用方式的多样性。结果表明重庆市岩溶区黄壤、石灰土和黄棕壤是本区主要土壤类型，土壤景观的多样化和空间异质化程度不高，但各类景观分布比例不均匀，土壤景观嵌块体呈现出复杂的几何形状。除了山地草甸土以林地和草地、棕壤以林地为主要景观外，另外的9种土壤类型上都是以耕地和林地为主要的景观，农、林用地在景观空间格局的结构和功能中起主导作用。由于各类土壤性质和分布特点的不同，耕地和林地在各类土壤上的分配比例存在着明显的差异 ...
王子芳 +6 more
doaj
Shuitu Baochi Xuebao, 2006 采用田间采样及室内培养方法，对内蒙古武川县耕地、退耕还灌地和放牧草原3种类型土地土壤微生物各类群的数量分布和层化比率进行了研究。结果表明：在土壤耕作层（0～30cm）土壤微生物数量呈逐层下降趋势，3种类型土地的土壤微生物总数相差不大，3种类型土地土壤微生物层化比率存在明显差异。同时提出了土壤微生物层化比率的概念，并认为土壤微生物层化比率可能是一个比较好的指示动态土壤质量（土壤演替方向）的指标，当一个区域土壤微生物层化比率大于2时，土地一般不会发生退化现象。在研究的3块实验区域中，耕地存在较高的退化风险 ...
李涛 +4 more
doaj +2 more sources