Results 21 to 30 of about 9,014 (169)
Shuitu Baochi Xuebao, 2023 喀斯特坡面伴随有大量直径＞25 cm的块石出露,为探明块石出露对土壤理化性质的影响,以坡面4个块石出露的农地和1个对照组为研究对象,分析土壤理化性质空间变异特征。结果表明:(1)在块石出露的农地中,土壤容重、黏粒、粉粒和砂粒的变化分别为0.87~1.42 g/cm3,25.70%~41.80%,38.11%~51.60%,13.76%~27.54%,土壤容重、黏粒和粉粒空间变异性均为弱且高于对照组,砂粒空间变异性为中等且低于对照组。(2)土壤全碳、全氮、全磷、全钾变化分别为9.82~23.13,0.94~
陈磊, 张卓栋, 李业桐
doaj
Advances in the studies of turbulence properties in the cloud and the role of turbulence in cloud and precipitation [PDF]
, 2023 Turbulence is an unregular atmospheric motion. Through increasing the collision efficiency of cloud droplets and accelerating the growth rate of cloud droplets, it plays an important role in the processes of cloud and precipitation formation and ...
Lei TIAN +4 more
core +1 more source
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Decomposition is the transformation of dead organic matter into its inorganic constituents. In most biomes, decomposition rates can be accurately predicted with simple mathematical models, but these models have long under‐predicted decomposition in globally extensive ...
Heather L. Throop +8 more
wiley +1 more source
Hydrochemical characteristics and water quality dynamic analysis of shallow groundwater in Huaibei Plain [PDF]
Shallow groundwater is the most important source of agricultural water supply in Huaibei Plain, and its water quality has attracted wide attention.
Chunfang ZHU +7 more
core +1 more source
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Forests worldwide are increasingly impacted by drought due to climate change, prompting plants to adapt through dehydration tolerance (DT) and avoidance (DA), two distinct physiological strategies.
Xingyun Liang +11 more
wiley +1 more source
, 2018 社会问卷调查往往需要针对多目标测度不同类型的数据,而传统的抽样方法主要针对单目标对象,且数据类型为数值型数据。本研究以厦门岛出行调查为例,调查问卷包含了住区特征、居民社会经济状况、就业情况、出行方式、出行目的与时间等方面的指标,提出了以变异度模型为主的新方法。以厦门岛住区居民出行所带来的能耗问题收集的少量先验问卷信息以及历史数据为基础,通过模型表征测度不同类型变量的空间变异性,将其作为空间分层的依据从而完成抽样布点方案,评价精度通过抽样方差进行。结果表明:(1 ...
刑莉, 曹馨, 李新虎, 高丽玲
core
The Terraced Walls Significantly Influence the Spatial Distribution of Soil Water in Terraced Areas on the Loess Plateau [PDF]
[Objective] Converting slopes into terraces is a crucial soil and water conservation and agricultural measure on the Loess Plateau. Understanding the impact of terraced walls on soil water is conducive to preserving soil water and enhancing terrace ...
BAI Chenyun +5 more
core +1 more source
Research on the Relationship Between Spatial Distribution of Housing Price and Infrastructure Level [PDF]
, 2017 为了探究厦门市岛内普通住宅房价的空间分布与基础设施水平的关系,运用Arc GIS得出最邻近指数、全局的Moran I指数和局部聚类与异常值情况,揭示普通住宅的空间聚集和房价空间自相关现象;通过数据统计分析、克里金插值和趋势分析,得到厦门岛内房价多中心分布状态及其演变规律。实现了基础设施水平空间结构的地理表达及整体评价,并基于双对数回归模型和地理加权回归模型,揭示影响房价空间分异的各类基础设施因子的不同影响情况。In order to explore the relationship between ...
周红, 曾祎瑾
core +1 more source
Soil Salinization Characteristics of Different Land Use Types in a Typical Oasis Irrigation Area of Lower Tarim River [PDF]
, 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