Results 1 to 10 of about 3,716 (159)

GIS-based Study of Ecological Water Requirement of Vegetation in Inner Mongolia Autonomous Region [PDF]

open access: yes, 2023
[Objective] The ecological water requirement (EWR) of vegetation in different typical zones for the rational allocation of water resources in the Inner Mongolia Autonomous Region was analyzed and calculated to provide scientific suggestions for water ...
Ge Zheng   +5 more
core   +1 more source

Effects of Climate Change and Human Activities on Vegetation Coverage in Arsenic Sandstone Area of Yellow River Basin [PDF]

open access: yes, 2023
[Objective] The arsenic sandstone area is the most serious soil erosion area in the Yellow River basin. Vegetation coverage changes and their driving factors were determined in order to provide a scientific reference for vegetation restoration and ...
An Li   +5 more
core   +1 more source

Soil Erosion and Its Spatial Distribution Characteristics in Three-River-Source National Park [PDF]

open access: yes, 2023
[Objective] The Three-River-Source National Park (TRSNP) is considered to be the “water tower of China”, and is an important ecological security barrier in China.
Huang Tingting   +5 more
core   +1 more source

Factors Influencing Spatial and Temporal Characteristics of Organic Carbon Loading to Rivers From Sediment in Small Watersheds in Sugarcane Areas [PDF]

open access: yes, 2023
[Objective] The spatial and temporal characteristics and influencing factors of soil organic carbon loss from sugarcane in a typical small watershed in the red soil area of Guangxi Zhuang Autonomous Region were determined, and the spatial and temporal ...
Chen Tingting   +8 more
core   +1 more source

Soil Salinization Characteristics of Different Land Use Types in a Typical Oasis Irrigation Area of Lower Tarim River [PDF]

open access: yes, 2023
[Objective] The soil salinization characteristics under different land use types in extremely arid regions were analyzed in order to provide support for the sustainable efficient utilization of regional land resources.
Baiyun Gang   +6 more
core   +1 more source

省域水上光伏发电潜力分析评估方法及应用 [PDF]

open access: yes, 2023
分布式光伏是土地资源紧张条件下推进“双碳”目标实现的重要途径。水上光伏作为近年来一种创新的分布式光伏开发方式受到了广泛关注,现行政策也对水上光伏开发做出了细致管理规定。提出一种基于遥感信息的水上光伏发电潜力评估方法,旨在为水上光伏发电资源与项目开发的科学论证和精准评估提供一种手段。方法基于开放的遥感影像处理平台获取遥感影像并计算水体指数,通过大津法确定阈值、提取全部水体面积,并利用制图工具ArcMap按照各项影响因素对水面面积逐级折减;然后通过将水体划分成若干格网 ...
宋福龙   +6 more
core   +1 more source

Monitoring and Evaluating Carbon Sink Capacity for Comprehensive Management of Soil and Water Conservation in Small Watersheds [PDF]

open access: yes, 2023
[Objective] The carbon sinks of soil and vegetation were monitored and evaluated in order to provide technology and methodology for implementing dynamic monitoring and evaluation of carbon sinks for soil and water conservation projects, and to provide ...
Cheng Hui   +6 more
core   +1 more source

Comparative Study on Soil Infiltration Characteristics of Different Land Use Types in Horqin Sandy Land [PDF]

open access: yes, 2022
[Objective] The differences in water infiltration characteristics between different land use types in Horqin sandy land were determined in order to provide a scientific reference for the study of water and material transport in the vadose zone in arid ...
Ala Musa   +3 more
core   +1 more source

Effects of Land Use Change on Imbalance in Ecosystem Services:A Case Study of Laizhou Bay Coastal Zone [PDF]

open access: yes, 2016
以莱州湾海岸带为研究区,基于2000年、2005年、2010年和2014年多时相土地利用数据,应用生态系统服务价值评估,逐层剖析土地利用变化对生态系统服务失衡特征的影响。结果表明:莱州湾海岸带供水与空气组分调节服务呈负值,2000~2014年,生态系统服务总价值丧失43%(147亿美元/a),生态系统服务多样性降低甚至丧失,呈向海性,围填海造成162亿美元生态损失。土地利用变化方式是造成生态失衡的主因,主要包括:交通工矿、盐田、养殖及城镇扩张,滩涂、河口湿地、耕地被侵占。滩涂和河口湿地减少,导致废物处理、
侯西勇   +4 more
core   +1 more source

An efficient retrieval method of land cover data based on HBase and static multi-level grid index(基于HBase与静态多级格网索引的地表覆盖数据高效检索方法)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2018
地表覆盖是地理国情监测的重要对象,为地理国情分析评价模型提供了可靠的数据源.高效的地表覆盖数据检索方法是挖掘地表覆盖数据潜在价值的前提.由于地表覆盖数据体量庞大、更新频繁,要素分布密集且不均匀,传统的空间检索方法出现了扩展困难、检索能力不足等问题.提出了一种基于HBase与静态多级格网索引的地表覆盖数据空间检索方法,针对地表覆盖数据特征设计了基于HBase的静态多级格网索引,利用MapReduce实现索引并行构建,通过多级过滤的方式,提高了地表覆盖空间范围的查询效率.实验表明,该方法能快速完成大规模 ...
ZHULinying(祝琳莹)   +4 more
doaj   +1 more source

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