Results 1 to 10 of about 805 (128)
Mechanical Properties of Medicago Sativa and Euphorbia Hypericifolia Root-Soil Complex [PDF]
, 2023 [Objective] The effects of soil moisture content and root area ratio on the soil consolidation effect of Medicago sativa and Euphorbia hypericifolia root systems and the interaction mechanism of root-soil were studied in order to provide scientific basis
Hai Long, Tan Shilin, Xu Bo
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Research Progress and Prospect Slope Greening in China [PDF]
, 2023 [Objective] The current status and hot trends of slope greening research were studied in order to provide theoretical support and references for subsequent research. [Methods] Professional bibliometric tools CiteSpace and VOSviewer were used to visualize
Guo Xiaoping +5 more
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Root Tensile Characteristics of Herbaceous Plants from Source Areas of Lanniqing Landslide in Zhaotong City, Yunnan Province [PDF]
, 2023 [Objective] The tensile strength characteristics of plant roots were studied to understand the performance of roots in complexes, in order to provide a basis for the selection of plants to be used in ecological slope protection.
Chen Yunying +4 more
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工程建设, 2023 为了建立根土复合体抗剪强度极限值估算模型，本研究通过高羊茅根系拉拔试验研究，基于室内直剪试验测定的根土复合体抗剪强度参数对Wu模型进行修正，并通过修正后的Wu模型确定高羊茅根系附加黏聚力的增长情况。结果表明：不同土体及不同植被的值不同，值与法向压力及含水率有关，且角度的变化随根面积比的增大而增大；夹角系数k随含水率的增高先增大后减小，其峰值点也会随含水率的增大而提高；平均拉拔强度与高羊茅根系直径呈现幂函数关系；根土复合体抗剪强度破坏趋势和素土大致相同，剪应力略高于素土 ...
梦柯 阮 +4 more
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Using land‐use history and multiple baselines to determine bird responses to cocoa agroforestry
Conservation Biology, Volume 36, Issue 4, August 2022., 2022 Abstract Agroforests can play an important role in biodiversity conservation in complex landscapes. A key factor distinguishing among agroforests is land‐use history – whether agroforests are established inside forests or on historically forested but currently open lands.
Dominic A. Martin +1 more
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Conservation Biology, Volume 35, Issue 4, Page 1162-1173, August 2021., 2021 Abstract Ko koe ki tēnā, ko ahau ki tēnai kīwai o te kete (you at that, and I at this handle of the basket). This Māori (New Zealanders of indigenous descent) saying conveys the principle of cooperation—we achieve more through working together, rather than separately.
Thalassa McMurdo Hamilton +9 more
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, 2021 火后泥石流由起动条件的不同可以分为表面径流型火后泥石流和浅层滑坡型火后泥石流。由于表面径流型火后泥石流 多发生于火灾后的前两年，水土流失严重，灾害效应明显，因此，大多数研究集中在表面径流型火后泥石流。然而，对于火灾 较长时间后发生的浅层滑坡型火后泥石流，现有研究相对较少，这制约了人们对于浅层滑坡型火后泥石流起动条件和起动机理 的认知。与表面径流型火后泥石流相比，浅层滑坡型火后泥石流的形成主要是由于根-土强度的退化导致。因此，定量测定火灾 后根和土强度的衰减，是了解浅层滑坡型火后泥石流机理的必要条件 ...
倪钧钧, 崔一飞, 李尧, 雷鸣宇
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Shuitu Baochi Xuebao, 2021 退耕还林（草）工程的有效实施，导致黄土高原植被迅速恢复，势必会引起植物根系和土壤理化性质变化，影响根—土复合体抗剪强度。为探究植被恢复年限对根—土复合体抗剪强度的潜在影响，在陕西省安塞区纸坊沟小流域选择6个不同退耕年限（5，12，20，27，37，46年）的撂荒地和1个坡耕地，进行不同土层深度（0—10，10—20，20—30，30—40，40—50 cm）根—土复合体原位剪切试验，同时测定根系特性和土壤理化性质。结果表明，随着退耕年限增加，0—50 cm土层根—土复合体抗剪强度均值呈"S"形增大趋势 ...
邢书昆, 张光辉, 朱平宗
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Shuitu Baochi Xuebao, 2022 以昭通烂泥箐滑坡源区优势物种鸢尾科鸢尾属鸢尾原生根系—土复合体作为研究对象，采用直剪试验对复合体抗剪特征进行深入研究，并与室内相同含水率重塑复合体试验结果对比分析。结果表明，整体上无根素土具有应变软化特征，而复合体具有应变硬化的特性，各复合体的抗剪强度均比素土的高，且抗剪强度随着含根量的增加而增加，根系加固效应明显，但复合体并没出现与重塑土类似的最优（最佳）含根量。原状复合体的c值随含根量的增加没有明显变化规律，而φ值则逐渐递增，其增长率也有相同的变化趋势。复合体破坏断面显示根系为主根系且垂直贯通剪切面，
徐宗恒 +4 more
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Shuitu Baochi Xuebao, 2023 研究根-土复合体土-水特征曲线与抗剪强度的关系,可为紫色土埂坎根-土复合体强化机理的揭示与埂坎稳定性的维持提供科学依据。选取三峡库区典型紫色土坡耕地埂坎草本植物根—土复合体为研究对象,结合Hyprop2土壤水分特征曲线测量仪、滤纸法与直剪试验,拟合土-水特征曲线,揭示基质吸力对根-土复合体抗剪强度的影响。结果表明:(1)根-土复合体土-水特征曲线明显分为边界效应区、过渡区与非饱和残余区,3种常用模型(B-C、VG、F-X)中F-X模型拟合该曲线效果最好,根-土复合体饱和含水率、进气吸力 ...
郑文娇 +4 more
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