Results 21 to 30 of about 754 (148)
Study on Soil Acidity Reconstruction by Using Dendrochemistry in the Subalpine Forest Ecosystems of Western Sichuan [PDF]
, 2011 酸沉降是全球面临的重大环境问题之一，已经造成了许多地区的环境破坏和生态恶化。为此，人们对酸雨的性质及环境效应进行了广泛的研究，已经有了越来越深刻的认识。而作为引起森林树种衰退和死亡的主要原因，由酸沉降导致的土壤酸化问题更是备受关注。在大多数地区，历史监测资料的缺乏却给长期土壤酸化的评估带来了很多的困难，但是树木年轮元素含量的径向变动提供了检测林区土壤化学历史变动的潜力，从而可以用来克服这一困难。 基于以上几点，本研究为获取重建川西亚高山森林生态系统土壤酸化历史变迁的最佳指标，选取该地区峨眉山（严重酸沉降）
陈磊
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Effects of Organic Fertilizer Substitution and Aggregation on Microfauna Communities in a Red Soil [PDF]
[Objective] Red soil is a typical soil in Southern China, and organic substitution is an important way to improve the physicochemical properties of red soil.
DING Weixin +6 more
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Functional Ecology, Volume 39, Issue 8, Page 2149-2169, August 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract Plants assemble beneficial rhizosphere microbiomes through a ‘cry for help’ mechanism upon pathogen or insect herbivore attack. The arbuscular mycorrhizal fungi (AMF) can influence the composition of microbial communities in the plant rhizosphere. However, their impacts
Yingde Li +6 more
wiley +1 more source
Functional Ecology, Volume 39, Issue 5, Page 1274-1287, May 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract Interactions between plants and soil microorganisms in the rhizosphere are vital for maintaining the nutrient cycle and stability of terrestrial ecosystems. Nitrogen, closely related to carbon (C) cycling and ecosystem productivity, undergoes transformation by soil ...
Ru Wang +9 more
wiley +1 more source
Studies on the Roles of Calcium and Calcium Receptor in Alleviating the Effect of Aluminum Stress on Antioxidant System for Arabidopsis thaliana [PDF]
, 2011 铝毒已成为酸性土壤中限制植物生长的主要因素之一，因此研究铝胁迫影响植物正常生长的机理具有重要的科学意义。钙在植物生长和发育以及植物抗逆过程中具有重要作用，作为第二信使，胞内自由钙离子在植物很多生理和生化过称中扮演重要角色。已有研究显示，外源钙的施加能缓解植物在铝胁迫下的伤害，但是钙受体（Ca2+-sensingreceptor，CAS）在外源钙缓解环境胁迫中发挥何种作用及变化规律却仍然不清楚。本文以模式植物拟南芥（Arabidopsisthaliana）野生型（Col-0）和CAS反义植株（CASas ...
游春燕
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Evaluation of the Effectiveness of Soil Improvement Measures in Apple Orchards on the Loess Plateau: A Meta-Analysis [PDF]
[Objective] Soil acidification, structure and fertility degradation and poor water-holding capacities are common problems in the apple orchard on the Loess Plateau, effective soil improvement techniques are crucial for enhancing soil quality, and ...
DUAN Shunxia +3 more
core +1 more source
Plant nutrient‐acquisition strategies contribute to species replacement during primary succession
Journal of Ecology, Volume 113, Issue 4, Page 988-1003, April 2025.Pioneer species Hippophae acquires phosphorus and nitrogen mainly by ‘mining’ and N2‐fixing strategies and thus dominates in the beginning of primary succession. As soil nutrient availability increases with the mobilization of apatite‐P and input of N‐rich plant residues, Hippophae' strategies become less efficient than Populus's scavenging strategies.
Xiao‐Long Li +12 more
wiley +1 more source
Rhizosphere Soil Nutrient and Enzyme Activity in Mixed Forest of Casurina Equisetifolia and Pinus elliotti [PDF]
, 2006 对木麻黄湿地松混交林的根际土壤养分及酶活性进行测定,结果表明:混交林根际与非根际土壤pH值均呈下降,加剧了土壤酸化。速效钾除外,混交林中木麻黄根际各种矿质养分含量都小于对应的纯林;土壤阳离子交换总量减小,土壤营养贮量和养分供应能力有所下降。多酚氧化酶除外,根际土壤脲酶、磷酸酶、过氧化物酶活性混交林中小于纯林。混交后木麻黄在促进湿地松生长的同时可能对自身的生长不利,在沿海沙地营造木麻黄湿地松混交林,两树种均对土壤养分的过量索取可能会加剧地力的退化。Soil chemical properties and ...
侯杰 +5 more
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Functional Ecology, Volume 38, Issue 11, Page 2433-2446, November 2024.Read the free Plain Language Summary for this article on the Journal blog. Abstract Plant phosphorus (P) acquisition strategy is considered to be an intrinsic driver behind plant succession. However, variations in plant P acquisition strategies in connection to soil P fraction changes after wetland drainage remain unclear.
Zhenhui Jiang +6 more
wiley +1 more source
Calcuim depletion in forest ecosystem induced by acid rain: a review [PDF]
, 2010 通讯作者Corresponding author. E2mail: zhenghl@xmu. edu. cn[中文文摘]酸雨作为一个全球性环境问题,随着我国经济的快速发展,其危害也日益严重。诸多长期观测研究认为酸雨导致森林生态系统营养流失,特别是Ca的流失是酸雨导致森林衰退的一个重要原因。长期酸雨影响下,土壤中的Ca大量流失,在红壤等酸性土壤中表现得尤为严重;此外酸雨也会直接淋溶出植物叶片中的Ca,造成林冠中Ca不同程度的淋溶流失,并可能造成叶片Ca含量下降。且酸雨会导致叶片细胞内Ca稳态的失衡 ...
刘廷武 +3 more
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