Shuitu Baochi Xuebao, 2021 明确土壤相对酶活性在植被恢复过程中的变化特征及影响因素，对客观揭示植被次生演替过程中微生物活性变化特征具有重要意义。利用时空互代法，选取黄土丘陵区植被次生演替过程中农田、草地、灌木、先锋林和顶级群落5个阶段为研究对象，探讨了β-1，4-葡萄糖苷酶（BG）、纤维二糖水解酶（CBH）、β-木糖苷酶（BX）、N-乙酰-β-D-氨基葡萄糖苷酶（NAG）、亮氨酸氨基肽酶（LAP）、丙氨酸酶转氨酶（ALT）和碱性磷酸酶（AP）7种酶活性变化特征及影响因素。结果表明：在植被次生演替过程中，单位土壤有机碳（SOC ...
王梅 +7 more
doaj
Different forms of nitrogen contents and their vertical variations of transformation modes of the sediments of Lake Yuehu, Wuhan [PDF]
, 2008 Vertical distributions of nitrogen contents, net nitrification rates, net N-mineralization rates and nitrate reductase activities in sediments of Lake Yuehu in June, 2005, were described on basis of four samples from the lake.
Chen Guoyuan +5 more
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Analysis of differences in physicochemical properties and bacterial community characteristics of rhizosphere soil in apple orchards under different cover treatments [PDF]
[Objective] Cover cropping is a widely adopted soil management technique used in fruit tree cultivation. By planting specific vegetation to cover the ground, this practice significantly influences nutrient cycling, microbial activity, and biodiversity ...
CAI Rongjing +10 more
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Shuitu Baochi Xuebao, 2011 通过田间试验,研究不同尿素施用量对道地药材滁菊土壤微生物数量、土壤酶活性和土壤微生物量碳、氮和产量的影响。结果表明,随着尿素施用量的提高,土壤细菌、真菌、放线菌和土壤过氧化氢酶、蛋白酶、脲酶呈先增加后降低的变化趋势,以N1(225kg N/hm2)或N2(450kg N/hm2)处理的酶活性较高,N3(675kg N/hm2)处理的酶活性略有降低;磷酸酶活性则呈上升趋势,以N3(675kg N/hm2)处理的脲酶活性最大。就土壤微生物量而言,土壤微生物C和土壤微生物N随施氮量的增加呈先增加后降低的趋势 ...
肖新 +6 more
doaj
Combined Effects of Humic Acid-Modified Magnetic Biochar and AMF on the Properties of Saline-Alkali Soil and Photosynthetic Parameters of Muskmelon [PDF]
[Objective] To improve humic acid-modified magnetic biochar (HA-MBC) and explore the combined effects of modified biochar and arbuscular mycorrhizal fungi (AMF) on the properties of saline-alkali soils and the growth of muskmelon.
CHEN Xinyan +12 more
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Rhizosphere Soil Chemical Properties and Enzyme Activities of Multi-rotation Casuarina Equisetifolia Plantation [PDF]
, 2012 在福建省东山县滨海沙地,对连栽条件下木麻黄林地根际和非根际土壤化学性质和酶活性进行了对比研究。结果表明:二代木麻黄林的根际和非根际土壤PH值均小于一代林,表明木麻黄连栽引起根际土壤酸化;根际土壤有机质、CEC值、水解性总酸度、全氮、水解氮、速效钾、交换性Mg2+和CA2+含量随着木麻黄连栽而降低,且心土层(20~40CM)差异更大,但土壤全磷、全钾变化不大;与一代林相比,二代木麻黄根际土壤磷酸酶和过氧化物酶活性减弱,多酚氧化酶活性增大,脲酶无明显变化。第二代木麻黄林地根际土壤养分的消耗 ...
侯杰 +5 more
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Shuitu Baochi Xuebao, 2007 对宁夏南部丘陵区不同植被自然恢复阶段土壤脲酶、碱性磷酸酶、蔗糖酶、脱氢酶和过氧化氢酶活性的变化特征进行了研究。结果表明：土壤脲酶、碱性磷酸酶、蔗糖酶和脱氢酶基本上随着植被封育年限的增加而增大,过氧化氢酶活性对于植被恢复年限的响应不明显。植被封育的前23年中,土壤脲酶、碱性磷酸酶、蔗糖酶和脱氢酶的活性增加明显,23年后基本趋于稳定,增加不明显。封育78年的大针茅群落下的土壤脲酶和蔗糖酶（转化酶）活性最强,其土壤中碳素和氮素营养循环强度最大。脲酶与蔗糖酶、碱性磷酸酶和脱氢酶的活性极显著相关 ...
黄懿梅, 安韶山, 曲东, 赵伟峰
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Shuitu Baochi Xuebao, 2019 选取祁连山排露沟流域海拔2 900~3 300 m的青海云杉林为研究对象，通过野外采样和室内分析，研究了不同海拔梯度青海云杉林土壤理化性质和酶活性的分布特征，并探讨二者之间的关系。结果表明：（1）随着海拔的升高，土壤含水量、有机质、全氮、速效钾含量逐渐增大；而土壤容重、pH、全钾含量逐渐减小；土壤全磷含量先减小后增大，速效磷含量没有明显的变化规律。（2）随着海拔的升高，土壤蔗糖酶活性和碱性磷酸酶活性总体上呈增强趋势；脲酶活性总体上呈先减弱后增强趋势，蛋白酶活性变化幅度较小且差异不显著（P>0.05 ...
马剑 +6 more
doaj
Rhizosphere soil nutrient and enzyme activity of Casuarina equisetifolia clone plantation and seedling plantation [PDF]
, 2008 木麻黄无性系林根际土壤有机质、全氮、水解氮、全磷、全钾、速效钾、钙和镁离子含量均大于木麻黄实生林,有效磷含量则相反。与实生林相比,木麻黄无性系林根际和非根际土壤pH值均有所下降,CEC值增加。木麻黄无性系林根际土壤脲酶、磷酸酶、过氧化物酶及多酚氧化酶活性均高于木麻黄实生林。脲酶除外,其余3种酶活性均是根际大于非根际。与木麻黄实生林相比,木麻黄无性系林根际环境得到改善,林地土壤营养贮量和养分供应能力提高,生长效果亦优于本地实生苗造林。The results showed that the contents
侯杰, 卢昌义, 叶功富, 张立华
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The promotion mechanism of how biochar affects the reclaimed soil microbial carbon sequestration capacity in coal mining areas [PDF]
Biochar application is a key measure for enhancing soil quality. However, the impact of biochar applications on the reclaimed soil for improvement on soil physicochemical properties, enzyme activity and microbial diversity is still unclear, especially ...
Fu CHEN +5 more
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