Results 31 to 40 of about 1,053,914 (162)
Gongye shui chuli, 2007 采用稳定高浓度偏铝酸钠,与硅酸钠、硫酸铝等合成得到3个系列共15个澄清稳定的高浓度聚铝硅(HPASS)产品,pH为3.15～3.63,密度为1.20～1.28g/mL,盐基度为65.90%～72.93%,Al2O3质量分数可达8.21%～10.84%。而Handy公司已工业化的产品PASS-100,Al2O3质量分数为10.1%,盐基度约为50%;国内Al2O3质量分数最高的PASS产品只能达到8%左右,盐基度为40%～60%。HPASS与PAC和聚铝铁(PAFC)的混凝性能对比实验发现 ...
苏彩燕, 周勤
doaj
Functional Ecology, Volume 40, Issue 1, Page 163-175, January 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Grazing by large herbivores is a critical factor shaping grassland biodiversity and ecosystem functioning worldwide, yet its consequences for soil communities remain poorly understood.
Quanhui Ma +12 more
wiley +1 more source
Functional Ecology, Volume 39, Issue 10, Page 2889-2904, October 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract In the Southwest Australian Biodiversity Hotspot, the greatest plant species diversity tends to occur on the most phosphorus (P)‐impoverished soils. Many plant species in this P‐impoverished environment release root carboxylates that mobilise soil P which is a more ...
Xue Meng Zhou +5 more
wiley +1 more source
, 2016 随着全球土地盐渍化程度的不断加深和盐渍化土地面积的不断扩张，土壤盐胁迫发展成为制约粮食产量和质量的主要限制因素。盐胁迫能够抑制植物的光合作用，造成植物体生长发育的迟缓和停滞。同时还能对植物体造成渗透胁迫和离子毒害，导致植物体水分平衡的失调和各种代谢活动的紊乱。面对盐胁迫对植物体多方面的影响，植物特别是耐盐植物进化出了多种不同层次的响应机制和策略。揭示这些机制对于人类充分利用植物资源、保护与生态恢复人类空间环境、增加与改善食品营养以及充分利用盐渍土资源实现现代农业可持续发展都具有重大理论与实践意义 ...
汤晓丽
core
Zhongguo shiyan zhenduanxue, 2013 目的比较两种不同方法提取的基因组DNA的纯度、产量和后续实验效果。方法采用酚/氯仿法和盐析法两种方法直接从全血中提取基因组DNA,并采用电泳、PCR和基质支持的激光释放/电离飞行时间质谱分析（MALDI-TOF MS）方法进行检测。结果酚/氯仿法提取的基因组DNA纯度高于盐析法 ...
宋洁云 +4 more
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Shuitu Baochi Xuebao, 2020 为了解喀斯特山区生态恢复模式对土壤盐基离子的交换及分布特征的影响，以喀斯特山区典型黄色石灰土为对象，研究了耕地、草地、林草间作地、退耕还草地生态恢复模式下土壤阳离子交换量（CEC）和盐基离子的分布规律。结果表明：该区土壤CEC为26.52~44.90 cmol/kg，且基本随土层深度的增加逐渐减小；各土壤层次阳离子交换量均表现为退耕还草地显著低于其他生态恢复模式（P Mg2+ > K+ > Na+的规律，且以Ca2+、Mg2+为主（占TEB的比例平均为91.92%，6.04%），K+、Na ...
陈忠柳, 舒英格, 周鹏鹏
doaj
Ecological Solutions and Evidence, Volume 6, Issue 2, April–June 2025.Pioneer grass species rapidly colonized the site within 1 year following land reclamation, with a grass‐to‐shrub transition concurrently with dike construction, indicating a clear trajectory of species establishment and development in a newly formed saltmarsh.
Deyi Yin +4 more
wiley +1 more source
Interactions between dye Orange Ⅱ and three cationic surfactants(染料橙黄Ⅱ与三个阳离子表面活性剂的相互作用)
Zhejiang Daxue xuebao. Lixue ban, 2007 测定了阴离子染料橙黄Ⅱ与十六烷基三甲基溴化铵、十六烷基-羟乙基二甲基溴化铵和十六烷基-二羟乙基-甲基溴化铵等3个具有不同头基的季胺盐型阳离子表面活性剂水溶液的紫外-可见吸收光谱，研究了橙黄Ⅱ与表面活性刑之间的相互作用.在不同浓度的染料-表面活性剂水溶液中，染料的吸收光谱强度发生明显变化，含表面法性剂的染料溶液的吸收强度比其水溶液要小，说明染料橙黄Ⅱ与季铵盐表面活性剂之间发生较强的相互作用.由光谱数据计算了表面活性剂的临界胶東浓度和染料-表面活性剂相互作用常数等重要物理参数 ...
XULi-qun(徐莉群) +3 more
doaj +1 more source
Plant nutrient‐acquisition strategies contribute to species replacement during primary succession
Journal of Ecology, Volume 113, Issue 4, Page 988-1003, April 2025.Pioneer species Hippophae acquires phosphorus and nitrogen mainly by ‘mining’ and N2‐fixing strategies and thus dominates in the beginning of primary succession. As soil nutrient availability increases with the mobilization of apatite‐P and input of N‐rich plant residues, Hippophae' strategies become less efficient than Populus's scavenging strategies.
Xiao‐Long Li +12 more
wiley +1 more source