Results 1 to 10 of about 6,193 (159)

Landscape Ecological Risk Assessment of Ya’an-Kangding Expressway Based on PLUS Model [PDF]

open access: yes, 2023
[Objective] The regional landscape ecological risks were evaluated, and their spatiotemporal variation was analyzed in order to provide important support for reducing regional ecological risks, maintaining regional ecological security, and promoting ...
Li Xu, Liu Jingjing, Peng Peihao
core   +1 more source

Spatio-Temporal Distribution and Ecological Risk Assessment for Herbicide and Its Metabolites in Baima River [PDF]

open access: yes, 2022
[Objective] The spatio-temporal variations of a typical herbicide (atrazine, ATR) and its degradation products 〔deethylatrazine (DEA) and deisopropylatrazine (DIA)〕 during the crop growing season (June to September) was investigated in order to provide ...
Sun Jiayao   +3 more
core   +1 more source

Spatiotemporal Characteristics and Driver Detection of Landscape Pattern and Ecological Risk in Huangshui River Basin [PDF]

open access: yes, 2023
[Objective] The characteristics and driving factors of landscape pattern changes and the spatiotemporal evolution of landscape ecological risk was analyzed in order to provide a theoretical basis for integrated watershed management, watershed ecosystem ...
Li Runjie   +3 more
core   +1 more source

对苯二甲酸二甲酯及其异构体的好氧微生物降解 [PDF]

open access: yes, 2004
Five morphologically distinct bacteria isolated from mangrove sediment by enrichment culture, were identified and tested for their ability to degrade dimethyl terephthalate (DMT) and its isomer dimethyl isophthalate (DMI). DMT at a concentration of 98 mg/
Gu, J, Li, J
core   +8 more sources

Distribution Characteristics and Ecological Risk Assessment of Heavy Metals in Typical Soil Profiles of Muchuan County, Sichuan Province [PDF]

open access: yes, 2023
BACKGROUNDSoil is a precious resource for human survival and social development. The quality of the soil environment is impacted by a variety of issues due to the social economy’s rapid expansion, and the issue of heavy metal contamination in farmed land
Bixia LIAO, Ling HE, Wenling SHEN
core   +1 more source

Correlation between fall risk and Traditional Chinese Medicine constitution of inpatients (住院患者跌倒风险与中医体质的相关性)

open access: yes中西医结合护理, 2021
Objective To explore the relationship between fall risk and Traditional Chinese Medicine (TCM) constitution of inpatients, and provide reference for reducing the occurrence of fall risk among inpatients.
WANG Bei (王蓓)   +6 more
doaj   +1 more source

Analysis on spatial heterogeneity of ecological restoration demand in resource-based cities: taking Jiawang District of Xuzhou city as an example [PDF]

open access: yes, 2022
After a long period of coal resource exploitation in resource-based cities, the imbalance and disharmony between resource development and ecological protection in coal mining areas are prominent.
Huping HOU   +4 more
core   +1 more source

景观格局变化下陕西汉江流域生态价值与风险的相关性研究

open access: yesShuitu Baochi Xuebao, 2023
陕西汉江流域是"南水北调"中线工程的主要水源地,属于国家重点生态功能区。研究流域内景观格局的时空变化特征、生态系统服务价值和景观生态风险的相关性,对保持流域内生态系统稳定性、保障流域生态安全具有指导意义。基于2000年、2005年、2010年、2015年、2020年陕西汉江流域5期土地利用数据,采用景观格局指数计算、生态系统服务价值评估、景观生态风险评估等方法,研究景观格局变化下生态系统服务价值、景观生态风险的时空演变机制及空间相关关系。结果表明:(1)2000—2020年 ...
孟晓璐, 张艳芳
doaj  

Accumulation and Source Apportionment of Soil Heavy Metals in Molybdenum-Lead-Zinc Polymetallic Ore Concentration Area of Luanchuan [PDF]

open access: yes, 2023
BACKGROUNDThe Luanchuan Mo-Pb-Zn polymetallic ore concentration area, located in Henan Province, China, has a long-term history of mining activities. Heavy metals have been liberated during mining, which induces heavy metal pollution of water and soil ...
Danli CHEN   +6 more
core   +1 more source

东北黑土带土地利用变化特征及生态敏感性评价

open access: yesShuitu Baochi Xuebao, 2023
东北黑土带是我国重要的商品粮生产基地,土壤质量退化、水土流失等问题直接影响生态与粮食供给安全,为明晰东北黑土带土地利用变化特征及评价生态敏感性,以2000年、2005年、2010年、2015年、2020年东北黑土带5期土地利用数据为基础,采用转移矩阵、地理探测器、综合生态风险评价等方法,研究景观格局及生态风险变化趋势。结果表明:(1)2000-2020年,研究区未利用地面积增加1 035.7km2,水域面积减少975.8 km2,土地利用变化最明显,耕地是阶段性变化较为剧烈的土地利用方式;(2 ...
晋一然   +4 more
doaj  

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