Results 21 to 30 of about 6,232 (167)
Shuitu Baochi Xuebao, 2022 以建于1990年的新疆阜康荒漠生态系统观测研究站的长期施肥定位试验为平台，分析了不施肥（CK）、单施化肥（化肥常规NPK和化肥高量N2P2K）、化肥配施秸秆（化肥配施秸秆常规NPKS和化肥配施秸秆高量NPKS2）和化肥配施猪粪（NPKM）对农田土壤有机碳和无机碳含量与剖面分布及有机碳热稳定性的影响。结果表明：（1）长期施肥处理提高了土壤有机碳含量，其中耕层（0—20 cm）土壤有机碳响应最敏感，化肥配施秸秆还田处理下有机碳积累高于其他处理。（2）长期施肥处理均降低土壤有机碳稳定性 ...
向姣, 王著峰, 王玉刚, 冯文婷
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Molecular mechanisms of FOXO which control excess differentiation and enlargement of adipocyte [PDF]
, 2011 課題番号 ...
SAKAMOTO KAZUICHI, 坂本 和一
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Ultrasound in Obstetrics &Gynecology, Volume 65, Issue 3, Page 303-310, March 2025.ABSTRACT Objective Globally, one in four pregnant women is classified as overweight or obese, based on their prepregnancy body mass index (BMI). Obese pregnant women are at increased risk of adverse pregnancy outcomes and long‐term cardiovascular disease that occurs earlier in life.
M. Charakida +6 more
wiley +1 more source
Shuitu Baochi Xuebao, 2021 有机肥的施用是改善茶叶品质、提高茶叶产量的重要措施之一，牛粪资源化利用有助于降低对农业生态环境的污染，为探讨牛粪有机肥对茶叶产量和品质的影响，通过连续2年（2019—2020年）的田间定位试验，研究了不同比例牛粪有机肥替代化肥对六安瓜片乌牛早茶叶内外品质、产量及茶园土壤肥力的影响，筛选了适宜茶园的牛粪有机肥替代化肥比例。结果表明：全部化肥处理乌牛早茶叶产量最高，为821.87 kg/hm2，其次是牛粪有机肥完全替代化肥处理，为817.13 kg/hm2，随着牛粪有机肥替代比例增加 ...
郭龙 +8 more
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Environmental risk assessment of intensive animal production in Jiulong River Watershed [PDF]
, 2005 在G IS支持下采用养分收支平衡法对九龙江流域规模化生猪养殖的环境风险进行评价。规模化养殖污染负荷在不同类型养殖场的分配、空间分布规律以及规模化养殖的环境风险评价结果表明:规模化养猪业年产粪尿量达107万t,以小型规模化养殖场产生的污染负荷最高;整体来看,规模化生猪养殖的环境风险不大,但由于养殖场的地理分布集中,造成近郊区域规模化养殖的环境风险极高;由于过多施用化肥,中远郊规模化养殖粪尿未得到合理利用而流失。位于水系附近的养殖场对水体影响较大,根据“福建省畜禽养殖污染防治管理办法 ...
曹文志, 曾悦, 洪华生, 陈能汪
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Functional Ecology, Volume 39, Issue 2, Page 621-634, February 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract Tropical forests are generally characterized by high species diversity and low soil phosphorus (P) availability. Although tropical plants have evolved adaptations to low soil P availability, we know relatively little about the strategies of different groups of species ...
Yingxu Fan +11 more
wiley +1 more source
不同培肥处理对采煤塌陷地复垦土壤生化作用强度及玉米产量的影响
Shuitu Baochi Xuebao, 2011 利用不同培肥处理对晋城采煤塌陷区复垦土壤微生物生化作用强度及玉米产量进行研究,结果表明:当每个培肥处理施入等量的氮(N)、磷(P2O5)时,有机肥+化肥+菌肥处理的氨化、纤维素分解作用强度好于其余处理且在复垦第3年达到最高,与有机肥+化肥差异显著;单施有机肥的硝化作用强度最大,与有机肥+化肥+菌肥处理差异不明显;对照的固氮作用强度最大与其余处理差异显著;有机肥+化肥+菌肥的产量高于其余处理,有机肥+化肥次之,除有机肥+化肥+菌肥与有机肥差异显著外,其余差异都不显著;氨化、硝化 ...
梁利宝 +3 more
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Lianas shift towards larger sizes and more acquisitive trait values in an Asian tropical rainforest
Biotropica, Volume 56, Issue 2, March 2024.Liana communities showed a shift in trait values indicating that they changed towards more large, acquisitive lianas with rapid water use. There are more larger stems through time due to the relatively low mortality of the larger individuals, which is associated with relatively low levels of disturbance.
Qi Liu +3 more
wiley +1 more source
Research on Ammonia Emission Inventory in Fujian Province [PDF]
, 2016 近年来，随着福建地区经济快速发展，城市化进度不断加快，环境与经济发展的矛盾日益突出，大气灰霾污染频繁发生，空气质量和能见度下降。氨是大气霾污染生成的促进剂，对大气污染有着直接和间接的影响。本研究建立了福建省人为源氨排放清单，分析氨的排放特征和时空分布，预测未来氨排放水平，探讨氨排放与氨监测和颗粒物离子的关系，为该地区空气质量改善提供了重要的基础数据。 首先，本研究以2013年为基准年，基于排放因子法建立了福建省人为源氨排放清单。研究显示，2013年福建地区人为源氨总排放量是25.24万吨 ...
刘元隆
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GCB Bioenergy, Volume 16, Issue 1, January 2024.The use of biochar increased greenhouse gas (GHG) emissions but countered the harm caused by GHG emissions by considerable soil carbon sequestration resulting in a negative carbon footprint. Furthermore, the use of biochar lowered the proportion of CH4 and N2O, demonstrating that biochar usage has a considerable positive effect on GHG emissions ...
Zhuoxi Chen +4 more
wiley +1 more source