Results 21 to 30 of about 5,242 (162)

古尔班通古特沙漠人工林土壤水分及其影响因素 [PDF]

open access: yes, 2009
通过2004年2~12月对古尔班通古特沙漠南缘2年生人工梭梭和沙拐枣混交林内3条典型坡面土壤水分进行了系统监测与研究。结果表明:人工林土壤水分状况受季节性降水、人工林种植密度、地形因子的影响而出现明显的时空分异。在空间上将土壤水分变化划分为三层,0~30cm为活跃层,30~60 cm为次活跃层,60~120 cm为相对稳定层。通过主成分分析,得出地形因子、种植密度对0~30 cm土层土壤水分的影响次序为坡度>坡向>种植密度>高程,30~60 cm土层为坡向>种植密度>坡度>高程,60~120 ...
付恒飞, 宋春武, 蒋进, 陈钧杰
core  

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

Wildfire strengthens the relationship between soil biodiversity and ecosystem multifunctionality in subtropical forests

open access: yesFunctional Ecology, Volume 40, Issue 5, Page 1415-1427, May 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Wildfires are disrupting and regenerating forces in nature that affect all ecosystem components. However, the impact of wildfires on soil multitrophic biodiversity and the resulting consequences for ecosystem multifunctionality (EMF) remain poorly understood.
Juan Zhou   +6 more
wiley   +1 more source

古尔班通古特沙漠腹地土壤水分时空分异研究

open access: yesShuitu Baochi Xuebao, 2004
古尔班通古特沙漠土壤水分补给以积雪融水和雨水为主,土壤水分是维系古尔班通古特沙漠荒漠植被发育最主要的制约因子。选取沙漠腹地典型沙垄为研究区,并分地貌部位布设了土壤水分监测点、植物监测样方以及沙面蚀积监测铁钎和气象观测站,从而形成以土壤水分监测为主的综合监测场。通过野外标定,利用中子水分仪对典型沙垄的不同地貌部位土壤水分动态进行系统监测,结果表明:土壤水分受季节性积雪、降雨、地貌部位、地形起伏、植被盖度等因素的影响而出现明显的空间分异与时间变化。土壤水分的空间差异整体表现为垄问土壤水分高于垄顶 ...
赵从举 康慕谊 雷加强
doaj   +2 more sources

地下水引發自由端順向坡土體滑動特性分析 [PDF]

open access: yes, 2014
Retrogressive sliding can be observed in groundwater-induced landslides. The major inducing factor of this phenomenon is the fluidization in the down-hillslope and the soil of the bottom-layers.
Chun-Hung Wu   +5 more
core  

Elevation, soil pH and calcium availability shape regional and local scale spatial patterns of PhoD gene abundance in tropical and subtropical forests

open access: yesFunctional Ecology, Volume 40, Issue 4, Page 983-1000, April 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Organic phosphorus mineralization is a critical process in the phosphorus cycle, governing phosphorus bioavailability for plants. The PhoD gene, which encodes the key enzyme alkaline phosphatase, serves as a valuable biomarker for this process.
Sandhya Mishra   +3 more
wiley   +1 more source

温带荒漠中温度和土壤水分对土壤呼吸的影响 [PDF]

open access: yes, 2009
荒漠对气候变化具有高度敏感性,深刻认识和量化非生物因子对荒漠生态系统土壤呼吸的影响具有重要意义。采用自动CO2通量系统(Li-8100)监测了梭梭(Haloxylon ammodendron)、假木贼(Anabasis aphylla)和盐穗木(Halostachys caspica)群落生长季土壤呼吸及温度、土壤含水量等,深入分析了水热因子对土壤呼吸的影响。土壤呼吸具有不对称的日格局,最小值出现在8:00,最大值在12:00~14:00。土壤呼吸的季节格局与气温变化基本同步,最小值在生长季末期(10月)
张丽华   +3 more
core  

Advancing Water Security in the Tropical and Subtropical Regions: An Integrative Topic Modeling Approach

open access: yesWorld Water Policy, Volume 12, Issue 1, February 2026.
ABSTRACT Water security in tropical regions faces escalating pressures from climate change, land‐use shifts, and population growth. We conducted a bibliometric review of 1146 peer‐reviewed articles (1964–2023) on tropical water security. Latent Dirichlet Allocation identified 13 thematic topics and their evolution. Publications rose sharply after 2012,
Karling Fernanda Schuster   +3 more
wiley   +1 more source

以群集分析加強 van Genuchen 模式參數推估之研究 [PDF]

open access: yes, 2014
The purpose of this study is improving the ability of Continuous PTFs used to predict the parameters of van Genuchten model. This study focused on medium-texture soils.
Ke-Wei Lin   +7 more
core  

Plant functional trait dissimilarity drives plant mixture effects on fine root biomass and trait variations

open access: yesNew Phytologist, Volume 249, Issue 2, Page 764-776, January 2026.
Summary Fine roots are critical for soil resource uptake, yet how declining plant diversity alters fine root biomass (RB) and traits remains unclear. We tested how plant functional trait dissimilarity in shade tolerance, drought tolerance, growth rate, and nitrogen‐fixation ability drives variation in root attributes.
Sai Peng, Yakun Zhang, Han Y. H. Chen
wiley   +1 more source

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