Results 31 to 40 of about 761,185 (165)
, 1991 本文以(由页)塘河为例,研究了中小河流水质模型参数,提出了一整套更为简便易行的估计中、小河流模型参数的方法,分析了准确估计模型参数的影响因素,得到了适用于(由页)塘河水质模型参数K_1、K_2、K_3及D_L的估计结果.该结果可直接应用于(由页)塘河的水质数值模拟,对于其它中 ...
徐丰
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A link between increased temperature and avian body condition in a logged tropical forest
Conservation Biology, Volume 40, Issue 3, June 2026.Abstract The combined effects of anthropogenic disturbances, such as logging and climate change, remain poorly understood; yet, they are the main threats to tropical biodiversity. Most tropical African countries lack long‐term climate data, so climate impacts on biodiversity cannot be assessed.
Moreen Uwimbabazi +7 more
wiley +1 more source
, 1999 在研究和解决地下水资源系统管理问题时，通常没有考虑人在思维和行动上所具有模糊性，没有或很少顾及和采纳、运用决策者或领域专家的知识、经验和创造性，所获得的研究成果实用性较差，很难为生产部门或决策部门采纳和应用。该文利用模糊数学的规划的理论和方法，结合新疆咯什布市地下水资源管理问题实际，研制出地下水资源系统模型管理模型，提出一种求解方法－模糊分步线性规划方法。最后进行了实际应用和验证，证明了所建立的模型和提出的方法具有实用性 ...
谢新民
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Representation of obligate groundwater‐dwelling copepod diversity in European protected areas
Conservation Biology, Volume 40, Issue 3, June 2026.Abstract Groundwaters sustain diverse surface ecosystems and are populated by metazoan species, mostly invertebrates, that provide fundamental ecological functions and are often of prominent conservation value due to narrow endemism and high phylogenetic rarity.
Francesco Cerasoli +7 more
wiley +1 more source
Shuitu Baochi Xuebao, 2003 波涌灌溉土壤间歇入渗数学模型是进行波涌灌溉田面水流运动数值模拟和灌水方案优 化设计的基础.本文介绍了国内外波涌灌溉土壤间歇入渗的几类主要数学模型:Richards模 型、权重函数模型、Kostiakov-Lewis模型或Kostiakov模型、周期-循环率模型、梯函数模 型和其它模型的应用现状,并进行了分析和评价.
吴军虎, 费良军, 李怀恩, 赵茜
doaj
, 2007 对于以冰雪融水和雨水混合补给为主的西北山区流域,需要结合山区特点建立分布式水文模型。通过取塔里木河流域中的清水河水系为研究区域,采用300 m×300 m DEM数据进行流域河网水系提取,同时用DEM数据对参数进行分布式异化,建立冰雪融水与降雨相结合的分布式水文模型。分析模拟结果表明:夏季模拟径流主峰值与实测径流值较为接近,而冬春季节两者之间的差别较大,反映了西北山区流域冰雪融水和雨水混合补给为主的特点 ...
陈亚宁, 丁辉, 陈亚鹏, 李卫红
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Conservation Biology, Volume 40, Issue 3, June 2026.Abstract Human development is a driver of global change and a major threat to biodiversity. Protected areas maintain and support biodiversity, but outside stressors, such as climate change and land use change, can negatively influence natural resources within protected areas.
Leah J. Rudge +2 more
wiley +1 more source
Shuitu Baochi Xuebao, 1994 在小流域正态整体模型上，分散配置水土保持措施，采用人工降雨方法，研究水沙变化规律。结果表明，流域产水产沙与水土流失的治理程度呈对数关系。文中还探讨了模型比例尺选择，模型制作和下垫面模拟技术等问题。
蒋定生 周清
doaj +2 more sources
, 1987 本文目的在于发展一个计算土壤内水分输送及能量交換的物理模型——耦合型模型,驱动该模型的大气条件是由实测而得的,引用对蒸发的土壤表面阻抗关联了在大气中水汽通量与从地表的蒸发,由于这种阻抗引入 ...
孙菽芬
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Harnessing social media data to track species range shifts
Conservation Biology, Volume 40, Issue 3, June 2026.Abstract Biodiversity monitoring programs and citizen science data remain heavily biased toward the Global North. Especially in megadiverse countries with limited biodiversity records, incorporating social media data can help address existing data gaps.
Shawan Chowdhury +15 more
wiley +1 more source