Results 91 to 100 of about 1,521 (151)
Evaluation of the Effectiveness of Soil Improvement Measures in Apple Orchards on the Loess Plateau: A Meta-Analysis [PDF]
[Objective] Soil acidification, structure and fertility degradation and poor water-holding capacities are common problems in the apple orchard on the Loess Plateau, effective soil improvement techniques are crucial for enhancing soil quality, and ...
DUAN Shunxia +3 more
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Key Ecological Process and Risk-Control Strategies of the Resource Recycle Pattern through Route of Wastewater-Soil-Plant [PDF]
, 2010 综合分析了污水—土壤—植物系统资源再生的关键生态过程、工程风险来源,总结了进行系统结构优化、工艺参数核算、强化布水与集排水以及加强监测等风险控制对策。指出该系统实质是基于生态系统物质循环,以水资源和植物资源再生为主要特征的循环经济模式,是污水生态处理与回用技术和植物资源开发利用技术的有机结合体,兼具低成本、高经济效益和生态效益,可因地制宜,形式多样地促进水污染治理、节约水资源,适合中国国情。This paper mainly focused on analyzing the key ecological
卢昌义 +4 more
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Research progress on the response characteristics and indicative significance of microorganisms to seawater intrusion [PDF]
Seawater intrusion is a global environmental geological issue that poses a serious threat to the water supply security and ecological environment of coastal cities.
Chuanshun ZHI +4 more
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Mechanisms of carbon distribution and stability in the photosynthetic processes of plant-soil systems influenced by arbuscular mycorrhizal fungi during reclamation of mining areas [PDF]
Inoculation of Arbuscular Mycorrhizal Fungi (AMF) combined with vegetation restoration has become a key reclamation technology for ecological restoration in mining subsidence.
Dongdong WANG +3 more
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Shuitu Baochi Xuebao, 2005 分析了浙江省两个典型茶区土壤化学、微生物学性质以及酶活性。结果表明,茶园土壤的酸化程度随植茶年龄的增加而加重,土壤有效态N以NO-3 N为主。两茶区高龄茶园的土壤微生物量均很低,表明长期植茶形成的独特生态环境对微生物有抑制作用。两茶园土壤微生物代谢商(Rmic/Cmic)都较非茶园对照土壤低,并且随植茶年龄的增加,两者呈相似的变化趋势。土壤微生物商的变化可能与茶园土壤环境胁迫状况有关,低龄茶园的土壤微生物商(Cmic/Corg)高于非茶园对照土壤,也明显高于高龄茶园。土壤有机碳,全N ,有效P ,NH ...
薛冬 姚槐应 黄昌勇
doaj +2 more sources
Insist on the Strategy of Forestry Sustainable Developmnet [PDF]
, 1999 该文分析比较了前人在杉木林和火力楠林两种林分的林冠、枯枝落叶层、土壤结构与肥力、土壤微生物等因素保持水土方面的研究成果,从战略上提出了长泰县林业可持续发展对策。The paper analyzes and makes comparison among the research achievements in water and soil conservation by leaves, defoliation layer,soil structure and fertility, soil ...
史大林, 洪海征, 黄璜
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Shuitu Baochi Xuebao, 2018 分析了生物质炭添加对红壤性水稻土理化性状、重金属含量及微生物生物量的影响。通过田间小区长期定位试验，一次性施入不同量生物质炭（0，10，20，30，40 t/hm2），于2017年9月采集各处理表层土样（0—15 cm），研究土壤理化性状、重金属含量及微生物生物量的变化。结果表明：生物质炭添加对土壤理化性状、重金属含量及微生物生物量均有显著影响。与对照相比，供试土壤的pH、EC和有机质含量随生物质炭添加量的增加而增大，增幅分别为5.11%~18.43%，37.62%~104.31%和1.72%~22 ...
郭碧林 +6 more
doaj
, 2017 独脚金内酯是独脚金醇类化合物的总称,是一种倍半萜内酯,来源自类胡萝卜素生物合成途径。近年来研 究发现,独脚金内酯不仅具有刺激种子发芽,还具有诱导丛枝菌根真菌分支和抑制植物分枝等多重生物学功能。独脚金内酯的多重角色在植物自身发育与周围环境的协调过程中发挥着重要作用。为了深入了解独脚金内酯,笔者归纳了其所具有的多重“角色”:种子萌发刺激物,共生信号物质及新型植物激素,并进一步探讨了各种功能与其结构的内在关系 ...
任承钢 孔存翠 王计平 李润植 解志红 +1 more
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Shuitu Baochi Xuebao, 2005 土壤微生物量碳、基础呼吸作用、土壤代谢商是表征土壤质量的重要指标,并且与土壤本身的理化性质有关。脱氢酶活性是土壤微生物种群及其活性的重要敏感性指标之一。通过室内培养,研究了不同铅添加水平(200~1 200 mg/kg)对青紫泥田微生物生物量碳及土壤基础呼吸作用、土壤代谢商、土壤脱氢酶的影响。研究表明:随培养时间延长,青紫泥田生物量碳呈下降趋势,基础呼吸作用随铅浓度升高而加强。土壤代谢商随培养时间延长变化趋势不同。外源铅胁迫下土壤脱氢酶活性随铅处理浓度升高明显受抑制。相关分析表明 ...
李江遐 杨肖娥 陈声明
doaj
[Evaluation of Gradient-Variant Quantum Dot Fluorescence Technology for Rapid Detection of <i>Brucella</i>]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue BanLi J +9 more
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