Results 51 to 60 of about 16,080 (174)
Geographic risks to functional groups of mammals and birds from habitat loss in Mexico
Conservation Biology, EarlyView.Abstract There is a need to quantify the impact of habitat loss due to anthropogenic factors on different aspects of biodiversity, such as functional trait diversity represented by functional groups (FGs). We developed a metric to assess the weighted risk of loss of habitat for 33 FGs of mammals and 36 FGs of birds in Mexico based on potential ...
Fernando Mayani‐Parás +4 more
wiley +1 more source
Shuitu Baochi Xuebao, 2019 为了探究夏尔希里自然保护区不同植被类型土壤水源涵养功能特征，在保护区内选取具有代表性的草地、灌木、森林样地共13个，以不同植被类型的土壤为试验材料，采用野外调查与室内试验相结合的方法，分别对保护区内的草地区、灌木区、森林区的土壤水源涵养能力进行定量分析。结果表明：（1）随着土层深度的增加，研究区草地土壤容重逐渐增大，在土壤层0—10 cm处出现最小值为0.69 g/cm3。草地土壤持水能力和蓄水能力变化规律一致，均表现为0—10 cm > 10—20 cm > 20—30 cm。（2）随着土层深度的增加，
刘西刚, 王勇辉, 焦黎
doaj
Conservation Biology, EarlyView.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, 2011 通过四川瀑布沟水电站消落区典型土壤磷释放室内模拟试验,研究淹水及干湿交替条件下消落区土壤性质变化情况以及土壤性质与磷释放之间的关系,以期为预防水库水体富营养化,水库消落区合理利用与科学制定管理对策提供参考。结果表明:淹水能够提高土壤活性氧化铁(Feox)含量,淹水风干后土壤Feox含量降低至淹水前的水平;淹水后Feox变化幅度为:旱地>水田>果园,紫色土>冲积土。土壤磷吸持饱和度(DPS)与无定形铁铝氧化物Alox密切相关;土壤最大吸磷量(Qm)淹水时最高增加至2 758.01 mg/kg ...
夏建国, 仲雨猛, 曹晓霞
doaj
Shuitu Baochi Xuebao, 2021 为明确土壤干湿交替环境下保水剂与土壤颗粒之间的作用方式及保水剂对土壤结构和水分有效性的影响。通过土柱模拟试验，研究连续失水—复水条件下，不同粒径（>0.85，0.6~0.85，0.30~0.45 mm）保水剂对土壤水分特性、土壤团聚体分布和结构稳定性的作用，以及保水剂—土壤混合体价键结构的微观变化特征。结果表明：第1次（T1）和第2次（T2）失水取样阶段，除T2阶段的最小粒径处理外，其余各粒径保水剂促使土壤相对含水量较对照显著增加72.9%以上 ...
纪冰祎 +5 more
doaj
International Journal of Applied Linguistics, EarlyView.ABSTRACT Research on English‐Medium‐Instruction (EMI) highlights inadequate support for students transitioning from L1‐medium‐instruction to EMI. To date, little research has focused on how L2 students’ adaptation to an EMI environment influences their L2 learning motivation (LLM).
Kevin W. H. Tai
wiley +1 more source
Shuitu Baochi Xuebao, 2000 四川省攀枝花市盐边县二滩水电站红格移民安置区农耕地土壤水分性质与抗旱性能的研究结果表明，与当地土壤肥力水平相对较高的菜园土和水稻土相比较，安置区土壤层次性被打乱，无保水性的犁底层存在，水分渗漏强；土壤最大吸湿水，萎蔫系数，田间持水量和有效水含量与土壤〈０．０１ｍｍ物理性粘粒含量呈正相关，土壤保水性能主要取决于土壤〈０．０１ｍｍ物理性粘粒含量，只有有机质含量较高，结构良好的土壤 ...
魏朝富 李瑞雪
doaj
Veterinary Dermatology, EarlyView.Background: Canine atopic dermatitis (cAD) is a common, chronic skin condition characterised by epidermal barrier dysfunction, immune dysregulation and cutaneous dysbiosis. While “emollient plus” formulations are widely used in human atopic dermatitis, their role in cAD remains underexplored. Hypothesis/Objectives: To evaluate the clinical efficacy and
Beatriz Fernandes +8 more
wiley +1 more source
Shuitu Baochi Xuebao, 2002 用张力计法测量了黄白土的持水特性及施用有机物料对其保水和供水性能的影响。结果表明 :(1 )在张力计测定范围内 ,黄白土土壤水吸力与含水量之间表现出显著的线性相关。(2 )施用有机物料 ,可以提高土壤的保水性能。其中施用牛粪的效果要优于麦秸。施用有机物料 ,还可以提高土壤速效水的上限 ,降低速效水的下限 ,提高速效水的含量 ...
汪建飞 李粉茹 金德胜
doaj +2 more sources
Factors That Influenced Coping With COVID‐19 During the Pandemic in Botswana
World Medical &Health Policy, Volume 18, Issue 1, March 2026.ABSTRACT This paper forms part of the broader Global South study, Personal and Family Coping with COVID‐19 in the Global South, which examines psychosocial and behavioral responses to the COVID‐19 pandemic. In Sub‐Saharan Africa, the pandemic posed significant psychological, social, and economic challenges, with important implications for preparedness ...
Magen Mhaka‐Mutepfa +3 more
wiley +1 more source