Results 61 to 70 of about 2,474 (124)
[Applications of microfluidic paper-based chips in environmental analysis and detection]. [PDF]
Se Pu, 2021 Zhang Y +10 more
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Shuitu Baochi Xuebao[目的] 窟野河流域是黄河中游粗沙区的主要侵蚀策源地。阐明窟野河流域土壤侵蚀时空变化特征,预测流域土壤侵蚀发展趋势,为流域未来水土流失综合治理提供决策支持。[方法] 基于窟野河流域2010—2020年多源数据,刻画流域土壤侵蚀空间分布,结合土壤侵蚀强度动态度、信息熵、综合指数和转移矩阵等定量指标,分析土壤侵蚀强度变化特征;构建CA-Markov模型,预测流域2025年土壤侵蚀状况。[结果] (1)研究区土壤侵蚀以微度、轻度侵蚀为主,面积占比超过70%,较强度侵蚀主要分布于流域中下游和支流悖牛川区域 ...
何源 +5 more
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基于土壤侵蚀定位土芯元素示踪法和GIS技术红壤小流域坡地土壤肥力的综合评价
Shuitu Baochi Xuebao, 2003 利用定位土芯稀土元素(Eu)示踪法及中子活化技术,对蒋家塘小流域坡地土壤侵蚀空间分 布规律进行了研究,并利用模糊数学的方法,建立了影响蒋家塘小流域侵蚀土壤肥力因素单因子评价模型,利用层次分析法确定各评价因子的权重,并用加权法得到 每个评价单元的土壤肥力综合指数,根据其数值的大小,将土壤肥力分为高(>0.45)、中( 0.25～0.45)和低(100 t/hm2*a)的坡地面积比例为15.67%,侵蚀程度中等(10～100 t/hm2*a)的坡地比例为22.13%,侵蚀程度较轻(1～10 t/hm2*a ...
袁东海 王兆骞 郭新波 吴曙雯
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Deciphering the Mechanisms Shaping the Plastisphere Microbiota in Soil. [PDF]
mSystems, 2022 Sun Y, Shi J, Wang X, Ding C, Wang J.
europepmc +1 more source
Research Status and Prospect of the Application of Radionuclides in Agricultural Resources and Environment [PDF]
Radionuclides with a diverse range of applications and high analytical efficiency to promote multidisciplinary Innovation and developments, which are considered to be an essential tool in the field of modern science and engineering.
Jianfeng ZHANG +4 more
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Shuitu Baochi Xuebao目的探索西南喀斯特地区安顺市土壤侵蚀时空演变规律及土壤侵蚀主控因子，掌握该地区土壤侵蚀状况，有助于该地区石漠化治理和水土资源管理。方法采用优化后的RUSLE模型估算2005—2020年安顺市土壤侵蚀，同时，利用随机森林模型(RF)揭示土壤侵蚀的驱动因子，并估算驱动因子相互作用对2005—2020年安顺市土壤侵蚀的影响。结果1) 2005—2020年，安顺市低强度土壤侵蚀分布在中部、东南部和东部地区，高强度土壤侵蚀分布在北部和西南部地区。从时间上来看，安顺市土壤侵蚀整体上呈改善趋势 ...
吴文贤, 李渊, 刘子琦
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Soil Erosion Process Under the Combined Action of Water and Gravity on Red Soil Slope [PDF]
[Objective] Soil erosion is one of the most important ecological and environmental problems in the world. It is of great significance to reveal the coupling mechanism of water and gravity combined erosion by analyzing the water and sediment process of ...
MA Lan +4 more
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Shuitu Baochi Xuebao, 2020 掌握四川省省级水土流失重点防治区水土流失情况、空间分异规律及其内在驱动因素对生态预警和土壤侵蚀治理等具有重要意义。应用中国土壤流失方程（CSLE）计算四川省省级水土流失重点防治区土壤侵蚀状况，通过不同土壤侵蚀敏感性评价方法识别中国土壤流失方程（CSLE）敏感因子，借助地理探测器探究重点防治区土壤侵蚀空间分异规律及其内在驱动力。结果表明：四川省省级水土流失重点防治区水土流失面积占比27.16%，平均土壤侵蚀模数为806.08 t/（km2·a），属于轻度侵蚀，但区内土壤侵蚀差异明显，局部存在严重水土流失 ...
陈锐银 +4 more
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Influence of mining-induced ground fissures on soil infiltration characteristics and its erosion effect in coal mining area of northern Shaanxi in the middle reaches of the Yellow River [PDF]
Cracking the soil and water loss effects of mining-induced surface fissures in the coal mining area of the middle reaches of the Yellow River is of great significance for ecological environment protection and high-quality development in the coal mining ...
Baodeng CHEN +6 more
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Shuitu Baochi Xuebao, 2001 第二次全国土壤侵蚀遥感调查在精度、速度、可比性等方面都有了很大的进步,但由于受"土壤侵蚀”中一些理论和学术问题的制约,仍需要深入研究.笔者通过参加本次工作撰写此文对土壤侵蚀遥感调查学术上的一些问题,如土壤侵蚀的概念、坡耕地土壤侵蚀等级的判读和确定、土壤侵蚀强度和土壤侵蚀程度以及重力侵蚀、人为侵蚀等问题进行了探讨,供业内人员参考.
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