Results 31 to 40 of about 846 (194)
Shuitu Baochi Xuebao, 2016 通过野外采样和室内分析相结合的方法，研究了紫色丘陵区不同土地利用方式下的土壤剖面微团聚体组成及分形特征。结果表明：林地、花椒地、旱地、水田和柑橘园土壤微团聚体组成以0.25～0.05 mm粒级为优势粒级，0.05～0.01 mm次之，占18.80%～35.57%，＜0.001 mm粒级含量最少，为0.33%～2.57%；0—20 cm土层土壤微团聚体年均重量比表面积（MWSSA）表现为林地（161.04 cm2/g）＞柑橘园（134.49 cm2/g）＞花椒地（117.31 cm2/g）＞水田（100 ...
代文才 +4 more
doaj +1 more source
Nutrient Characteristics and Factors Influencing Surface Soil with Gully Erosion on Sloping Farmland for Low Hilly Terrain in Black Soil Area [PDF]
, 2023 [Objective] The soil nutrient characteristics and influencing factors of surface soil gully erosion for low hilly terrain in the black soil area were studied in order to provide data and theoretical support for the rational use of land resources ...
He Xuyang +7 more
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Effect of Soil Conditioner Interface Modification on Migration Characteristics of Saline-Alkali Ions in Irrigation Area of Yellow River [PDF]
, 2023 [Objective] Through the treatment of hydrophilic and hydrophobic by the conditioner, the influence of different interface characteristics of the conditioner on the soil water and salt transport law was explored, and the improvement mechanism of fly ash ...
Chen Xiangyu +5 more
core +1 more source
Shuitu Baochi Xuebao, 2017 采用野外调查与室内分析相结合的方法，研究名山地区稻田植茶后土壤团聚体水稳性变化特征及其影响因素。结果表明：稻田及植茶后的土壤水稳性团聚体含量在各粒径及土层间表现不同，稻田、茶园5年和10年土壤水稳性团聚体含量总体上随着粒径的减小呈先降低后上升的趋势，茶园15年水稳性团聚体含量则随着粒径的减小逐渐增加。从不同土层来看，在0—20，20—40 cm土层中，随着稻田植茶年限的增加，土壤团聚体含量以＞2 mm粒径团聚体为主转变为以＜0.25 mm粒径团聚体为主，而在40—60 cm土层中，总体上＜0.25 ...
李欣雨, 夏建国, 田汶艳
doaj +1 more source
Water-holding Capacity of Reclaimed Grassland with Different Ages in Karst Regions [PDF]
, 2023 [Objective] The water-holding capacity of reclaimed grassland of different ages was studied in order to provide a scientific basis for water retention and soil and water conservation of reclaimed grassland in karst regions.
Li Xuemei +3 more
core +1 more source
Shuitu Baochi Xuebao, 2006 土壤有机碳是土壤团聚体形成的重要胶结剂之一，土壤团聚体分布影响有机碳含量及其稳定性。对子午岭植被恢复过程中团聚体有机碳含量变化的研究结果显示：相对于农田，植被恢复可增加土壤各个粒径团聚体有机碳含量．同时增加不同层次土壤团聚体有机碳含量。就粒径而言，虽然各个植被下〈0．25mm土壤团聚体有机碳含量最低，植被类型变化对土壤团聚体有机碳含量影响最大的是〈0．25mm粒径，辽东栎林地〈0．25mm土壤团聚体有机碳含量是农田〈0．25mm团聚体有机碳含量的3倍；其次，植被类型对〉5mm团聚体有机碳含量影响较大 ...
赵世伟 +4 more
doaj +2 more sources
Shuitu Baochi Xuebao, 2023 微团聚体是土壤团粒结构的基本组成单元,较大团聚体具有更强的稳定性,其形成与稳定对于土壤有机碳的长期吸存起着决定性作用。目前关于微团聚体形成与稳定性的研究多专注于农业土壤,红壤侵蚀地植被恢复后土壤团聚体稳定性、有机碳分布及微生物群落特征研究也主要集中在大团聚体上,而土壤微团聚体的动态变化及其主要影响因素尚不明确,对于其内在机制更缺乏了解。通过总结土壤微团聚体的形成过程及稳定性,综述了凋落物、根系和菌根对土壤微团聚体形成与稳定的影响,阐述了土壤微团聚体内微生物群落 ...
黄荣珍 +8 more
doaj
Effect of Reforestation Tree Species on the Distribution and Stability of Purple Soil Aggregates [PDF]
[Objective] Afforestation following the Grain for Green initiative is a crucial measure to improve soil structure and reduce soil erosion. Understanding the mechanisms of the effects of afforestation tree species on the formation of soil aggregates can ...
HAN Guangzhong +4 more
core +1 more source
Shuitu Baochi Xuebao, 2021 通过野外采样和室内分析相结合，以广东省赤红壤区花岗岩（G）、第四纪红土（Q）和砂页岩（S）母质发育的林地（FL）、水田（PF）和旱地（UL）土壤为研究对象，分析了土壤团聚体有机碳及其组分和不同形态铁氧化物含量，探究了其对土壤团聚体稳定性的影响及贡献。结果显示：（1）3种母质发育的3种利用方式土壤团聚体均以>0.25 mm为主，2~5 mm团聚体以花岗岩母质发育林地土壤最高（58.51%），0.25~2 mm团聚体以花岗岩（62.93%）和第四纪红土（59.21%）母质发育水田和旱地土壤最高 ...
唐贤 +5 more
doaj
Long-term straw incorporation significantly reduced subsoil organic carbon stock in cinnamon soil [PDF]
, 2020 peer ...
Xu, Hu +5 more
core +1 more source