Evaluation and Source of Heavy Metal Pollution in Surface Soils in Typical Alpine Agricultural Areas of Qinghai Province [PDF]
, 2023 BACKGROUNDHeavy metal pollution in soils is often the result of multiple genetic sources and action paths. Simple identification of the sources of heavy metals is not enough to provide sufficient information for the control of regional heavy metal ...
Jianqiang LI +5 more
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Evolution Characteristics of Soil and Water Conservation Carbon Pool and Its Carbon Sink Potential in Typical Small Watershed of the Loess Plateau [PDF]
[Objective] To investigate the evolution of soil carbon pool under catchment scale integrated soil and water conservation measures and evaluate the potential of soil and water conservation carbon sink. [Methods] Typical small watershed for soil and water
DONG Pengbei +5 more
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Attribution analysis of water-sediment variation under the influence of climate change and human activities in the Kuye River Basin [PDF]
The attribution of the evolution of water and sediment in a river basin is an important theoretical issue in hydrogeology. To understand the change patterns of water and sediment in the Kuye River Basin and provide scientific basis for water resources ...
Jiankang ZHANG +2 more
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The Terraced Walls Significantly Influence the Spatial Distribution of Soil Water in Terraced Areas on the Loess Plateau [PDF]
[Objective] Converting slopes into terraces is a crucial soil and water conservation and agricultural measure on the Loess Plateau. Understanding the impact of terraced walls on soil water is conducive to preserving soil water and enhancing terrace ...
BAI Chenyun +5 more
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Characteristics of Soil Saturated Hydraulic Conductivity and Its Influencing Factors at Different Landscape Positions in a Small Peak-Cluster Depression Watershed of the Karst Region [PDF]
[Objective] Peak-cluster depression is one of the important karst landform types. Exploring the influence of different landscape positions on soil saturated hydraulic conductivity (Ks) can provide a reference for further understanding of the hydrological
HOU Senzheng +5 more
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, 2018 习近平新时代中国特色社会主义思想,是党的十八大以来以习近平同志为核心的党中央带领全国各族人民探索新时代课题取得的理论创新成果。这一创新思想立意高远、意蕴丰厚。它以马克思主义理论及其中国化成果为其理论根源、以中国优秀文化铸其文化底蕴、以党的十八大以来的国内外实践经验塑其实践基础、以习近平总书记的个人历程究其思想发源,在理论层面、文化层面 ...
林丹, 章舜钦
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Distribution Characteristics and Coupling Relationship Between Soil Erosion and Hydrologic and Sediment Connectivity in Changchong River Basin [PDF]
[Objective] To clarify the distribution characteristics and coupling relationship between soil erosion and hydrologic and sediment connectivity in Changchong River Basin, and to provide basis for soil erosion control and soil erosion prevention in this ...
LI Jianing +4 more
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, 2020 随着我国对生态环境改善、防治水土流失的重视程度越来越高,淤地坝工程的建设技术得到了提升。淤地坝在防治水土流失、保护水土资源的工作中发挥着重要的作用。鉴于此,文章就淤地坝建设意义与相关建议进行探究。
亚莉 高, 雨 刘
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Shuitu Baochi Xuebao, 2018 黄土丘Ⅴ区因其独特的土壤及地形和水文地质条件，使淤地坝坝控区的重力侵蚀严重，以至于毁坏耕地、道路和桥梁等，严重影响淤地坝效益的发挥。针对黄土丘Ⅴ区典型小流域坝控区在运行期间因沟岸崩塌和岸坡滑塌等产生的重力侵蚀导致淤地坝泥沙淤积量计算失真的问题，采用实测库容与3S技术生成库容资料和原设计库容曲线复核率定的三重复核分析方法，对运行期淤地坝坝控区域的重力侵蚀来源、诱发因素及预测进行分析。结果表明：（1）反映淤地坝淤积形态的形态判别系数α'为0.711~208.517，均值48.238 ...
高哲 +7 more
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Shuitu Baochi Xuebao, 2003 我国黄土高原地区广泛分布的以防洪拦沙、淤地为目的的淤地坝工程可能在增加陆地碳贮存方面起一定作用。为验证这一假设,利用碾庄沟流域淤地坝普查资料,结合土壤侵蚀野外调查,研究了1957～2000年碾庄沟流域淤地坝控制区土壤侵蚀产沙时间空间变化与淤地坝库泥沙有机碳储存关系,并估算了黄土高原地区淤地坝拦泥对全球陆地生态系统碳收支的贡献。在研究的12个淤地坝小流域内,流域土壤侵蚀产沙平均速率为25800t/(km2·a),变异系数为42%。土壤侵蚀产沙速率的大小序列为50年代>60年代>70年代>80年代 ...
李勇 白玲玉
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