Results 1 to 10 of about 4,939 (153)
Dynamic Monitoring of Soil and Water Loss at Wuding River Basin, a Typical Tributary of Middle Reaches of Yellow River [PDF]
, 2022 [Objective] The distribution and dynamic characteristics of soil and water loss at Wuding River, a typical coarse sediment tributary in the middle reaches of the Yellow River, were analyzed in order to provide a scientific basis for soil and water ...
Zhang Dong, Zhao Hui, Zhao Yuan
core +1 more source
Monitoring and Analysis on Ecological Environment in Near-shore Waters of Yellow River Estuary During 2015—2020 [PDF]
, 2022 [Objective] The water quality of Bohai Sea was monitored from 2015 to 2020, and the correlation between the change of ecological environment in the coastal waters of the Yellow River estuary and sediment and runoff into the sea was analyzed, in order to ...
Li Su, Zhang Xiang
core +1 more source
Distribution Characteristics and Control Countermeasures of Soil and Water Loss in Ten Kongduis of Yellow River [PDF]
, 2023 [Objective] The area, intensity and dynamic changes of soil and water loss in the Ten Tongduis of the Yellow River were analyzed in order to provide a reference for the comprehensive management of the basin. [Methods] Based on the national remote sensing
Chang Feiyang +3 more
core +1 more source
Spatial Distribution Characteristics of Soil Water and Salt in Newly Cultivated Farmland Under Gully Control in Loess Hilly Region [PDF]
, 2023 [Objective] Part of the newly cultivated farmland formed by the “Gully Control and Land Reclamation” project is facing the risk of soil salinization in the loess hilly region.
Jiao Feng +3 more
core +1 more source
Utilization Potential of Water Resources in Check Dams in Gansu Province [PDF]
, 2022 [Objective] The potential of check dams to retain silt and utilize water resources were analyzed in order to provide a basis for water resource utilization and management of check dams.
Jin Feng +5 more
core +1 more source
, 2021 甲烷（CH4）是一种重要的温室气体，对全球气候变化有不可忽视的影响.三峡水库是中国最大的水库，其潜在的CH4释放近年来备受关注.然而，此地区现存研究主要集中于水-气界面通量观测，对库底沉积物同底层水体CH4浓度变化之间关系的认知仍然欠缺.为探究三峡水库泥沙主要沉降淤积的中段区域库底水体CH4浓度变化及其主要影响因素，本研究于2017年8月-2018年11月在涪陵南沱镇、忠县石宝寨、万州小周镇采集库底上覆水体和底泥样本，并结合三峡水库调度运行特征进行分析.结果表明，三峡水库中段库底上覆水CH4浓度范围为0.
秦宇 +9 more
semanticscholar +1 more source
Representation of the world's biophysical conditions by the global protected area network
Conservation Biology, Volume 36, Issue 2, April 2022., 2022 Abstract Protected areas (PAs) are often implemented without consideration of already existing PAs, which is likely to cause an overrepresentation of certain biophysical conditions. We assessed the representativeness of the current PA network with regard to the world's biophysical conditions to highlight which conditions are underprotected and where ...
Matthias F. Biber +2 more
wiley +1 more source
Key n‐Gram Extractions and Analyses of Different Registers Based on Attention Network
Journal of Applied Mathematics, Volume 2021, Issue 1, 2021., 2021 Key n -gram extraction can be seen as extracting n‐grams which can distinguish different registers. Keyword (as n = 1, 1‐gram is the keyword) extraction models are generally carried out from two aspects, the feature extraction and the model design.
Haiyan Wu +5 more
wiley +1 more source
, 2020 利用地球静止轨道水色卫星总固体悬浮泥沙浓度(TSS)的逐时影像, 对冬季长江浅滩TSS的空间形态和潮周期变化特征进行定量分析, 并结合数值模拟得出的潮流、潮汐结果探讨其动力机制. 研究结果表明, 冬季长江浅滩TSS的空间分布呈现由苏北浅滩向外海阶梯式递减的舌状分布形态, 两条TSS锋面大致位于20和50m等深线附近; 在GOCI覆盖时段内, TSS的潮周期变化显著, 变化过程可分为衰减、维持、增长三个阶段, 其中在衰减和增长阶段存在跳跃式剧烈变化.
周钰, 宣基亮, 黄大吉
semanticscholar +1 more source
Shuitu Baochi Xuebao, 2021 为明确黄河干流头道拐水文站水沙运动过程、变化趋势及运动状态特征，以2006—2018年黄河干流头道拐水文站水沙数据为基础，基于累积距平法、R/S极差分析法、河道来沙系数与不协调度等研究方法，对头道拐水文站水沙运动过程进行系统分析。结果表明：头道拐水文站年际间径流与输沙量和年内月均径流与输沙量变化趋势均呈现良好的一致性，但两者的季节性差异特征显著，且输沙量的显著性较径流更突出；冬季径流与输沙量变化趋势同步性相比其他季节较差 ...
赵水霞 +6 more
doaj