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典型黑土区农业流域土壤侵蚀-沉积对土壤养分和酶活性的影响

open access: greenShuitu Baochi Xuebao, 2023
研究农业流域土壤侵蚀—沉积对土壤养分和酶活性的影响可为土壤侵蚀退化评价提供重要科学依据。选择典型薄层黑土区的宾州河流域为研究区,在流域上游、中游和下游各选取2个代表性坡面,基于137Cs示踪技术估算土壤侵蚀—沉积速率,分析流域和坡面尺度土壤侵蚀—沉积对土壤养分(有机质、全氮和速效磷)和土壤酶活性(转化酶、脲酶和碱性磷酸酶)的影响。结果表明:(1)土壤侵蚀速率在流域上游最大,分别是流域中游和下游的1.9,11.2倍;坡面尺度上土壤侵蚀速率在坡中部最大,分别是坡上部和坡下部的1.3~2.6,2.8~12 ...
耿华杰   +6 more
doaj   +1 more source

叶绿醇对铅污染土壤酶活性及土壤铅有效态影响

open access: greenShuitu Baochi Xuebao, 2019
采用土培盆栽试验,研究了在铅污染土壤中添加叶绿醇对土壤酶活性和土壤铅离子有效态的影响,探讨了不同处理时间下叶绿醇对铅污染土壤的缓解作用。结果表明:短时间内在土壤中添加叶绿醇对土壤过氧化氢酶、蔗糖酶和碱性磷酸酶活性具有促进作用,对土壤脲酶活性具有抑制作用,且每种酶对叶绿醇的敏感程度不同,其中碱性磷酸酶最为敏感;随着处理时间延长土壤中过氧化氢酶活性、脲酶活性和铅离子有效态降低,蔗糖酶活性和碱性磷酸酶活性显著升高;土壤重金属铅浓度为600 mg/kg时,叶绿醇浓度为50 mg/kg蔗糖酶活性最强 ...
于培鑫, 潘芳慧, 王友保, 李晶
doaj   +1 more source

塔里木沙漠公路防护林土壤酶分布特征及其与有机质的关系

open access: greenShuitu Baochi Xuebao, 2004
对咸水灌溉条件下的塔里木沙漠公路防护林土壤酶活性及其对土壤有机质的影响进行的研究表明:人工绿地建成后,土壤结构和养分状况得到改善,土壤酶活性大幅提高,并且在时间和空间分布上呈现明显的规律性。通径系数分析显示,土壤蛋白酶对土壤有机质直接作用最大,其余依次为中性磷酸酶、脲酶、转化酶、碱性磷酸酶和过氧化氢酶。中性磷酸酶—碱性磷酸酶、碱性磷酸酶—中性磷酸酶、脲酶—中性磷酸酶、蛋白酶—中性磷酸酶之间的间接作用对土壤有机质动态影响较大,其余土壤酶间的作用相对不显著。
周智彬 徐新文
doaj   +3 more sources

广州城市公园绿地土壤肥力及酶活性特征

open access: yesShuitu Baochi Xuebao, 2007
采集广州市中心城区部分公园绿地表层土壤(0-20 cm),研究了土壤pH、有机质、粘粒、氮、磷、钾含量等肥力特性和脲酶、蔗糖酶、磷酸酶活性。结果表明,广州公园绿地土壤以酸性(pH 4.5-5.5)和中性(pH 6.5-7.5)占的比例高,部分土壤呈碱性,土壤pH值较自然土壤有增高的趋势;土壤有机质含量以中等水平为主,土壤全氮、碱解氮以中等到低水平为主。土壤全磷和有效磷以中等以上水平为主,土壤全钾、速效钾以中等以上水平为主,土壤脲酶、蔗糖酶和磷酸酶活性平均分别为0.36 m g NH3-N/g,12.29
卢瑛, 冯宏, 甘海华
doaj   +2 more sources

Lithology modulates soil priming effect via resource limitations and bacterial community structure

open access: yesFunctional 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

Arbuscular mycorrhizal fungus reshapes the rhizosphere microbiome of alfalfa in response to above‐ground attack by aphids and a fungal plant pathogen

open access: yesFunctional 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

亚热带米槠天然林不同深度土壤胞外酶活性对隔离降雨的响应

open access: yesShuitu Baochi Xuebao, 2022
随着全球变暖的加剧,降雨格局也在发生变化,土壤酶是森林生态系统化学过程的重要参与者,能够快速反映土壤环境的变化。因此研究亚热带土壤胞外酶活性对降水变化的响应,可有效评估气候变化对土壤有机质分解、转化的影响。以福建三明格氏栲自然保护区内的米槠天然林为研究对象,设置对照(CT)、隔离30%降雨(TE1)和隔离60%降雨(TE2) 3种处理,于2020年9月对不同土层(0—10,10—20,20—40,40—60 cm)土壤进行取样,研究9年的隔离降雨对不同土层土壤酶活性的影响。结果表明:不同程度隔离降雨后 ...
曹平丽   +5 more
doaj  

Plant–microbe interactions drive the rhizosphere microbial assembly and nitrogen cycling in a subtropical forest

open access: yesFunctional 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

Plant nutrient‐acquisition strategies contribute to species replacement during primary succession

open access: yesJournal 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

Changing plant phosphorus acquisition strategies in relation to altered soil phosphorus fractions after wetland drainage

open access: yesFunctional 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

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