Review of techniques and case studies for saline-alkali land amelioration in the coastal regions of China [PDF]
Soil salinization is one of the major challenges in agricultural production and ecological development. With the rapid development of China’s coastal areas, land resources are becoming increasingly scarce, creating an urgent need for the improvement and ...
Hang LYU +5 more
core +1 more source
Shuitu Baochi Xuebao, 2016 为分析南水北调(中线)丹江口库区不同土地利用方式土壤团聚体稳定性及其分形特征，揭示人类活动对土壤结构的影响，以库区内不同土地利用方式（水田、旱地、果园、人工林地、自然林地）土壤为研究对象，经干筛和湿筛法测定团聚体组成，以土壤团聚体稳定性指标（大团聚体含量（R＞0.25）和团聚体破坏率（PAD））、土壤团聚体直径指标（平均质量直径（MWD）和几何均重直径（GMD））以及分形维数（D）作为评价指标，对比分析丹江口库区不同土地利用方式下土壤团聚体组成及其稳定性。结果表明，对土壤团聚体组成的测定 ...
姜, 刘, 刘
doaj
Shuitu Baochi Xuebao, 2018 为探讨紫色土区植物篱篱前淤积带土壤团聚体的稳定性，试验以该淤积带土壤为研究对象，设置了10°对照小区（T1）、10°新银合欢植物篱小区（T2）、10°香根草植物篱小区（T3）、15°对照小区（T4）、15°香根草植物篱小区（T5）等5个处理，采用萨维诺夫法测定了风干团聚体和水稳性团聚体的组成状况，以保存机率、稳定性指数、PAD（结构体破坏率）、MWD（平均重量直径）、GMD（几何平均直径）、MWSSA（平均重量比表面积）、CS（偏度系数）和CE（峰凸系数）等为评价指标，分析了不同坡度 ...
王润泽 +8 more
doaj
The Long-term Variations and Influencing Factors of Soil Saturated Hydraulic Conductivity in Terraces on the Loess Plateau [PDF]
[Objective] The long-term variations of soil saturated hydraulic conductivity (Ks) and its primary controlling factors in terraces on the Loess Plateau were explored. [Methods] Terraces were selected for three land use types, i.e.
CHANG Heng +6 more
core +1 more source
The Impact of Litter Decomposition on Soil Organic Carbon Stability in Coastal Shelter Forests Under Thinning [PDF]
[Objective] To elucidate the characteristics of litter decomposition and changes in soil organic carbon (SOC) fractions under thinning, and to reveal the impact of litter decomposition on the stability of SOC in coastal shelter forests under thinning ...
DONG Zhi +5 more
core +1 more source
Shuitu Baochi Xuebao, 2020 为探讨青藏高原高寒草原草甸的土壤团聚体稳定性及有机碳等养分因子的变化分布，在青海省三江源区高寒地带选取样点分层采集土壤样品，进行室内测定并分析2种植被下土壤团聚体和养分因子的变化特征。结果表明：研究区土壤>0.25 mm水稳性团聚体含量（WSA）、平均质量直径（MWD）与几何平均直径（GMD）均为草甸>草原，而分形维数（D）与结构体破坏率（PAD）为草原>草甸，即青藏高原高寒草甸土壤团聚体稳定性大于高寒草原。高寒草甸土壤稳定性及养分含量随土层深度增加显著降低 ...
于文竹 +5 more
doaj
Distribution Characteristics of Soil Organic Carbon and Its Composition in Suaeda salsa Wetland in the Yellow River Delta [PDF]
, 2013 应用物理分组方法研究了黄河三角洲典型碱蓬湿地土壤有机碳及其组分分布特征.结果表明,研究区土壤重组有机碳是土壤有机碳的主要组成部分,土壤重组有机碳含量、土壤颗粒有机碳含量与土壤总有机碳含量都显著正相关.研究区土壤轻组组分比例和含量范围分别在0.008%～0.15%和0.10～0.40 g·kg-1,颗粒有机碳分配比例范围为8.83%～30.58%,说明黄河三角洲碱蓬湿地土壤有机碳中非保护性组分较低 ...
于君宝, 管博, 董洪芳
core
Effects of Mixing Tree Species on Soil Enzyme Activity and Carbon-Use Efficiency in Eroded Masson Pine Forest [PDF]
[Objective] Soil microbial metabolic efficiency profoundly affects soil nutrient cycling and soil carbon sequestration in the recovery process of eroded and degraded areas. However, it is unclear how tree species mixture affects soil extracellular enzyme
JIANG Yongmeng +7 more
core +1 more source
Shuitu Baochi Xuebao, 2019 为理解煤对土壤结构的影响，以土壤煤累积现象普遍的焦作矿粮复合区为研究区，选取3种不同程度的煤累积土壤（低累积、中累积和高累积）为研究对象，不含煤的土壤为对照，通过测定0-40 cm土层深度范围的水稳性团聚体组成，并采用分形维数（D）、平均重量直径（MWD）、几何平均直径（GMD）和大团聚体破坏率（PAD）作为团粒结构的评价指标，探讨煤累积对土壤团聚体组成与稳定性的影响。结果表明：煤在土壤中累积可以促进水稳性微团聚体向大团聚体转化，降低团聚体的分形维数，提高团聚体稳定性。深层（20-40 cm ...
聂小军 +5 more
doaj
Effects of Interplanting Medicinal Herbs on Runoff, Sediment and Nitrogen and Phosphorus Losses in Young Oil Tea Plantation on Red Soil Sloping Field [PDF]
[Objective] To investigate the effects and applicability of different intercropping patterns of medicinal herbs on water, soil, and nutrient losses in young oil tea gardens on red soil slopes. [Methods] Runoff plot experiments were carried out in Jiangxi
DUAN Jian +4 more
core +1 more source