Results 11 to 20 of about 2,111,102 (152)

Defoliation and fertilisation differentially moderate root trait effects on soil abiotic and biotic properties

open access: yesJournal of Ecology, Volume 111, Issue 12, Page 2733-2749, December 2023., 2023
Our results indicate that defoliation and fertilisation, two common grassland perturbations, have contrasting impacts on root traits of grassland plant species, with direct and indirect short‐term consequences for a wide range of soil abiotic and biotic properties that underpin ecosystem functioning.
Yan Liu   +2 more
wiley   +1 more source

Uncorrected soil water isotopes through cryogenic vacuum distillation may lead to a false estimation on plant water sources

open access: yesMethods in Ecology and Evolution, Volume 14, Issue 6, Page 1443-1456, June 2023., 2023
Abstract Successful use of stable isotopes (δ2H and δ18O) in ecohydrological studies relies on the accurate extraction of unfractionated water from different types of soil samples. Cryogenic vacuum distillation (CVD) is a common laboratory‐based technique used for soil water extraction; however, the reliability of this technique in reflecting soil ...
Bin Yang   +14 more
wiley   +1 more source

The handbook for standardized field and laboratory measurements in terrestrial climate change experiments and observational studies (ClimEx)

open access: yesMethods in Ecology and Evolution, Volume 11, Issue 1, Page 22-37, January 2020., 2020
Abstract Climate change is a world‐wide threat to biodiversity and ecosystem structure, functioning and services. To understand the underlying drivers and mechanisms, and to predict the consequences for nature and people, we urgently need better understanding of the direction and magnitude of climate change impacts across the soil–plant–atmosphere ...
Aud H. Halbritter   +116 more
wiley   +1 more source

贵州喀斯特山区石漠化治理过程中土壤质量特性研究

open access: yesShuitu Baochi Xuebao, 2004
通过定位、半定位观测,对贵州喀斯特山区石漠化治理过程中土壤质量特性进行研究,探讨贵州喀斯特山区生态恢复过程中土壤特性以及土壤肥力变化规律。试验结果表明:喀斯特地区石漠化综合治理对土壤物理化学性质的影响较为明显,表现为表层土壤有机质增加,土壤容重降低,孔隙度增加,土壤理化性质改善,保水保肥能力和通道性增加;同时,土壤微生物数量增加,土壤微生物数量增加程度表现为细菌>放线菌>真菌,土壤肥力改善,生产力逐渐提高。
罗海波 宋光煜 何腾兵 刘丛强 刘方 刘元生 钱晓刚
doaj   +2 more sources

Effects of habitat fragmentation on soil properties of the secondary Masson pine (Pinus massoniana) forests of the Thousand Island Lake region(生境片段化对千岛湖次生马尾松林土壤理化性质的影响)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2018
土壤是森林生态系统的重要组成部分,对森林生物多样性和生态功能的维持具有不可替代的作用.据此,本研究以千岛湖地区大陆35个样方和29个不同大小和隔离度的陆桥岛屿次生马尾松林土壤为研究对象,分析了生境片段化对土壤理化性质的影响.研究发现,大陆马尾松林土壤厚度显著高于岛屿,而其土壤最大持水量显著低于岛屿;大陆土壤的全磷(P)显著低于岛屿,而土壤有效磷(AP)和硝态氮(NO3-N)显著高于岛屿.在片段化的岛屿生境中,土壤C、N、P、NO3-N、AP随与边缘距离的增大而降低;隔离度和地形对部分土壤理化因子有影响 ...
RONGFuren(戎福仁)   +6 more
doaj   +1 more source

不同治理措施对退化紫色土土壤生物学活性的影响

open access: yesShuitu Baochi Xuebao, 2003
通过对福建省宁化县禾口镇退化紫色土采取3种不同治理措施的土壤理化性质、土壤酶活性和土壤微生物特性的研究,结果表明:治理后土壤有机质、>0.25mm水稳性团聚体含量均有不同程度的提高;治理后土壤细菌、真菌、放线菌数量及微生物总数有明显的增加,土壤水解性酶和氧化还原酶活性得到显著的增强,土壤养分贮量和速效养分供应强度得到明显的改善,土壤肥力得到不同程度的恢复。表明紫色土的治理应根据其所处的不同退化阶段而采取相应的治理措施,才能使土壤的物理化学性质、土壤肥力得到较好的恢复。
郑本暖
doaj   +2 more sources

晋西黄土区退耕还林后土壤入渗特征及土壤质量评价

open access: yesShuitu Baochi Xuebao, 2021
为研究晋西黄土区退耕还林后不同植被覆盖下土壤的入渗特征及土壤质量评价,采用野外双环入渗法测定土壤的入渗特征,并测定不同地类土壤的容重、孔隙度、有机质、全氮等指标,使用相关性分析研究不同类型植被覆盖下土壤的入渗性能及其与土壤理化性质的相关关系,并将各地类的土壤理化性质进行主成分分析。结果表明:(1)植被类型对于土壤渗透速率影响较大,表现为天然次生林>刺槐×油松混交林>刺槐纯林>油松纯林>灌木林地>苹果园地>荒草地>农田(玉米地)。(2)退耕还林后,不同植被类型的土壤理化性质差异显著(P灌木林地>苹果园地 ...
刘畅   +7 more
doaj  

块石出露对喀斯特坡耕地土壤理化性质的影响

open access: yesShuitu Baochi Xuebao, 2023
喀斯特坡面伴随有大量直径>25 cm的块石出露,为探明块石出露对土壤理化性质的影响,以坡面4个块石出露的农地和1个对照组为研究对象,分析土壤理化性质空间变异特征。结果表明:(1)在块石出露的农地中,土壤容重、黏粒、粉粒和砂粒的变化分别为0.87~1.42 g/cm3,25.70%~41.80%,38.11%~51.60%,13.76%~27.54%,土壤容重、黏粒和粉粒空间变异性均为弱且高于对照组,砂粒空间变异性为中等且低于对照组。(2)土壤全碳、全氮、全磷、全钾变化分别为9.82~23.13,0.94~
陈磊, 张卓栋, 李业桐
doaj  

宁镇丘陵区村域小流域不同土壤景观下表土质量变化及评价

open access: yesShuitu Baochi Xuebao, 2022
中国南方丘陵区存在着自然过程和人类活动交互影响的、土地利用—土地覆盖叠加变化的多种土壤景观,其土壤质量对乡村农业产业发展具有重要影响。在南京市远郊的溧水区晶桥镇芝山村域小流域,选取流域内生态保护的林地、农业利用的园地、旱地和稻田4种土壤景观,于秋季分别采集表土样品,测定土壤基础理化性质、土壤团聚体粒径组成及土壤微生物磷脂肪酸和胞外酶活性分布,分析土壤肥力、土壤团聚化、土壤生物活性等关键性质在不同土壤景观中的变异情况,并采用土壤质量评价方法探明土壤景观与表土质量的变化关系。结果表明,与原生林地相比 ...
赵正   +13 more
doaj  

Root economic space is associated with rhizosphere microbial divergence via root metabolite‐mediated pathways in degraded grasslands

open access: yesFunctional 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
wiley   +1 more source

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