Results 11 to 20 of about 563 (140)
Shuitu Baochi Xuebao, 2022 中国南方丘陵区存在着自然过程和人类活动交互影响的、土地利用—土地覆盖叠加变化的多种土壤景观，其土壤质量对乡村农业产业发展具有重要影响。在南京市远郊的溧水区晶桥镇芝山村域小流域，选取流域内生态保护的林地、农业利用的园地、旱地和稻田4种土壤景观，于秋季分别采集表土样品，测定土壤基础理化性质、土壤团聚体粒径组成及土壤微生物磷脂肪酸和胞外酶活性分布，分析土壤肥力、土壤团聚化、土壤生物活性等关键性质在不同土壤景观中的变异情况，并采用土壤质量评价方法探明土壤景观与表土质量的变化关系。结果表明，与原生林地相比 ...
赵正 +13 more
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Shuitu Baochi Xuebao, 2021 为评价植被恢复过程土壤基质改良对紫色土抗蚀性的影响，在湖南南部耒阳山地紫色土进行土壤基质改良试验，测定土壤基质未经处理（对照地）、表层与底层土置换（土层置换地）、表层与底层土置换并添加有机物改良剂（基质改良地）的紫色土0—10，10—20 cm土层13个抗蚀性评价指标，运用相关性分析和主成分分析方法筛选影响紫色土抗蚀性的主要指标，建立综合评价模型评价紫色土不同土壤基质处理后的抗蚀性。结果表明：（1）与对照地相比，基质改良地0—10，10—20 cm土层有机碳含量、抗蚀指数、> 0.25 mm湿筛团聚体、>
范世才, 方晰, 王振鹏, 陈金磊
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Soil Quality Assessment of Five Typical Forest Stands in the Dianchi Lake Basin based on MDS [PDF]
[Objective] Soil quality is a critical indicator of ecosystem health and sustainable land management. [Methods] Key soil quality indicators (e.g., organic matter, total nitrogen, available nitrogen, capillary porosity, and pH) were identified through ...
HUANG Shuai +4 more
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Evaluation of the Effectiveness of Soil Improvement Measures in Apple Orchards on the Loess Plateau: A Meta-Analysis [PDF]
[Objective] Soil acidification, structure and fertility degradation and poor water-holding capacities are common problems in the apple orchard on the Loess Plateau, effective soil improvement techniques are crucial for enhancing soil quality, and ...
DUAN Shunxia +3 more
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Shuitu Baochi Xuebao, 2020 为探究汾河临汾段湿地土壤及沉积物的理化性质、养分含量，评价土壤状况、预测水体的生态环境质量。共采集98个土壤及沉积物样本，分析了理化性质及养分等11项指标。结果表明：土壤pH在7.0~8.4，容重在1.04~1.44 g/cm3，含水率在5.9%~17.5%，电导率在0.167~0.747 mS/cm，质地类型包括壤黏土和黏壤土；有机质、全氮、全磷含量分别为8.7~39.8，0.354~1.046，0.389~1.444 g/kg，碱解氮、速效磷、速效钾含量分别为12.9~50.3，2.6~31.2 ...
次瑞敏, 王莉, 可宇娜
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Soil Preferential Flow Characteristics in Coal Mine Subsidence Area under Different Rainfall Duration [PDF]
[Objective] Research on the preferential flow characteristics triggered by cracks in coal mining subsidence areas can provide support for scientific and rational development of water resource management and ecological management practice in the mining ...
DAI Bin +4 more
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Shuitu Baochi Xuebao, 2023 为探究不同整地措施下梯田果园土壤质量的变化,以赣南宁都县小洋小流域脐橙果园开发示范区内的3种典型坡面(优化整地Ty、传统整地Tc、撂荒地CK)为研究对象,采用主成分分析法(principal component analysis,PCA)筛选最小数据集指标,对该地区土壤质量进行评价。结果表明:(1)由全量数据集(total data set,TDS)和最小数据数据集(minimum data set,MDS)计算的土壤质量指数存在显著正相关关系,R2=0.604 ...
李雨晨 +6 more
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Shuitu Baochi Xuebao, 2022 研究晋西黄土区不同密度油松林保育土壤功能变化规律及差异性,评价其保育土壤功能,以加强林分管理和生态恢复建设。以山西吉县蔡家川流域4种不同密度(925,1 325,1 750,2 250株/hm2)油松人工林为研究对象,对其土壤容重、孔隙度等物理性质、有机质等化学性质以及坡面径流泥沙量进行测定和分析,确定了12项评价指标,采用熵权法(EWM)对各密度油松林地的保育土壤功能进行综合评价。结果表明:(1)4种林分密度的油松人工林,土壤容重、总孔隙度、非毛管孔隙度、毛管孔隙度、全氮、全磷、氨氮、硝氮和 ...
兰道云 +6 more
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Shuitu Baochi Xuebao, 2021 为研究晋西黄土区退耕还林后不同植被覆盖下土壤的入渗特征及土壤质量评价，采用野外双环入渗法测定土壤的入渗特征，并测定不同地类土壤的容重、孔隙度、有机质、全氮等指标，使用相关性分析研究不同类型植被覆盖下土壤的入渗性能及其与土壤理化性质的相关关系，并将各地类的土壤理化性质进行主成分分析。结果表明：（1）植被类型对于土壤渗透速率影响较大，表现为天然次生林>刺槐×油松混交林>刺槐纯林>油松纯林>灌木林地>苹果园地>荒草地>农田（玉米地）。（2）退耕还林后，不同植被类型的土壤理化性质差异显著（P灌木林地>苹果园地 ...
刘畅 +7 more
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Application of Energy Dispersive X-ray Fluorescence Spectroscopy in Analysis of Heavy Metals in Soil: A Review [PDF]
With the process of urbanization and industrialization, heavy metals enter the ecological environment through various pathways and accumulate in large quantities in the soil, causing potential risks to soil environmental health. In recent years, with the
Aosong JIANG, Longhua WU, Zhu LI
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