Results 1 to 10 of about 2,586 (115)
Shuitu Baochi Xuebao, 2021 为了研究消落带不同土地利用类型和水淹强度下土壤活性有机碳组分特征及其主要的影响因子，选取不同海拔高程（水淹强度）与不同土地利用类型的消落带土壤为研究对象，定量解析土地利用方式与水淹强度对三峡水库消落带土壤活性有机碳组分的影响，并分析土壤活性有机碳与土壤理化性质之间的关系。结果表明，消落带土壤活性有机碳含量总体上随着水淹强度的增强而减小。土地利用、水淹强度及其交互作用对土壤活性有机碳影响的解释度分别为22.1%，13.7%，9.3%；土壤微生物生物量碳主要受土地利用、土地利用与淹水强度交互作用的影响 ...
李文娟 +4 more
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Shuitu Baochi Xuebao, 2022 为了探明西南地区长期不同施肥处理对稻麦轮作紫色土有机碳组分和碳循环相关水解酶活性的影响,依托重庆北碚29年稻麦轮作紫色土长期定位试验,选取不施肥(CK)、单施氮磷钾肥(NPK)、有机无机配施(NPKM)、秸秆还田配施含氯化肥[(NPK)ClS]和秸秆还田配施无机肥(NPKS)5个处理,测定土壤各组分有机碳含量及与土壤碳循环相关的水解酶活性并分析两者间的相关性。结果表明:长期施肥(NPK、NPKM和NPKS)显著提高土壤总有机碳和不同组分有机碳含量,各施肥处理土壤总有机碳含量较CK提升11.6%~40.2%
徐文静 +7 more
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Shuitu Baochi Xuebao, 2023 为探究不同温度条件下添加碳酸钙对活性有机碳组分及微生物群落组成的影响,以贵州典型黄壤土为研究对象,采用同位素标记法,设置6个处理(培养温度分别为15,25,35 ℃下添加碳酸钙和不添加碳酸钙),通过分析不同温度下碳酸钙添加对土壤活性有机碳、微生物群落组成的影响,揭示外源碳在土壤活性碳库中的分配规律,以期为贵州典型黄壤有机碳固存和改良提供理论依据。结果表明:各温度下添加碳酸钙显著增加土壤DOC和MBC含量(p＜0.01),添加碳酸钙各处理土壤DOC含量在培养第5天均达到最大值,相较于不添加碳酸钙处理 ...
赵娜 +5 more
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Shuitu Baochi Xuebao, 2016 为了解若尔盖高寒草地沙化对土壤活性有机碳组分的影响，采用空间代替时间的方法，通过野外土壤采集，并结合室内化验分析，研究了若尔盖高寒草原不同沙化阶段土壤有机碳及其活性组分的含量和变化特征。结果表明：沙化对高寒草地0—60 cm土层土壤有机碳含量具有显著影响，随沙化程度加剧，土壤总有机碳、溶解性有机碳、易氧化有机碳和微生物量碳含量均呈现显著下降的特征，极重度沙化阶段较潜在沙化阶段分别减少了74.76%，80.24%，76.02%和83.24%；活性有机碳组分的损失较土壤总有机碳明显 ...
费 凯 +5 more
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Shuitu Baochi Xuebao目的研究大兴安岭不同林下植被兴安落叶松林土壤活性有机碳组分特征，为大兴安岭地区森林土壤活性有机碳及其稳定性研究提供科学依据。方法以4种林下植被兴安落叶松林（兴安杜鹃-兴安落叶松林（Rhododendron dauricum-Larix gmelinii forest，简称DJL）、杜香-兴安落叶松林（Ledum palustre-Larix. gmelinii forest，简称DXL）、苔草-兴安落叶松林（Carex tristachya-Larix gmelinii forest，简称TCL）和苔藓-
曾晨阳, 满秀玲, 蔡体久
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Effects of Native Forest Conversion on Soil Labile Organic Carbon and Enzyme Activity in Northwestern Hunan Province [PDF]
, 2023 [Objective] The response of soil labile organic carbon components and enzyme activities to natural forest conversion was analyzed in order to provide a scientific basis for predicting regional soil health evolution and environmental change.
Li Xue +5 more
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Relationship Between Soil Factors and Enzyme Activities in Mangrove Wetland of Dongzhai Port [PDF]
, 2023 [Objective] Mangroves are part of a wetland ecosystem found along tropical and sub-tropical coastlines. The soil active organic carbon composition, soil enzyme activity, and the interaction between them, under different plant community conditions was ...
Chen Xiaohua +4 more
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Relationship Between Land Use Carbon Balance and Human Activity Intensity in Tuojiang River Basin [PDF]
, 2023 [Objective] The synergistic relationship between land use carbon balance and human activity intensity were studied in order to provide a reference for regional collaborative carbon emission reduction planning in the Tuojiang River basin, and thereby meet
Gao Xuesong, Wang Qi, Zhang Wenying
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Effects of Desertification on Phosphorus Fractions of Alpine Meadow Soils [PDF]
, 2023 [Objective] Soil phosphorus fractions determine the migration and availability of phosphorus during soil evolution. The spatial distribution characteristics of soil phosphorus fractions in alpine meadows under different desertification levels were ...
Gao Yongheng +5 more
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Effects of Different Mulching Measures on Distribution of Organic Carbon and Inorganic Carbon in Soil Aggregates Under Spring Maize Cultivation [PDF]
, 2023 [Objective] The effects of different mulching methods on the distribution of organic and inorganic carbon in soil aggregates on the Loess Plateau, and the mechanism under which soil aggregates sequester carbon under mulched conditions were determined in ...
Li Meng +8 more
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