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Optimization of Fermentation Conditions of Lactobacillus Plantarum YW11 for Exopolysaccharides Production(植物乳杆菌YW11生产胞外多糖的发酵条件研究) [PDF]
The fermentation conditions for producing exopolysaccharides by Lactobacillus plantarum YW11 isolated from Tibetan Kefir were optimized. The experiment factors and levels were firstly selected by the single-factor test.
CAO Yongqiang(曹永强) +3 more
doaj +1 more source
In forests dominated by large clonal plants, such as giant moso bamboo, drought can alter the allocation of newly assimilated C within the tissues of source ramet but may not affect its allocation among interconnected ramets or within plant–soil systems.
Xiaogai Ge +9 more
wiley +1 more source
Summary Domesticated chickpea cultivars exhibit limited genetic diversity. This study evaluated the effects of chickpea domestication on phosphorus (P)‐use efficiency (PUE) under low‐P conditions, using a diverse Cicer collection, including wild species. Two wild Cicer species – 54 C. reticulatum accessions and 15 C. echinospermum accessions, and seven
Jiayin Pang +8 more
wiley +1 more source
污染物在人工湿地中的去除机理包括了物理、化学及生物学过程,人工湿地能同时去除多种污染物质正源于其中的协同机制。影响人工湿地水质净化的主要因素包括:植物、碳源、基质、溶解氧和微生物。探讨了人工湿地对氮、磷和有机物的去除机理,同时论述了影响人工湿地去污的主要因素,并对今后的相关研究方向进行了展望。
丁怡, 王玮, 宋新山, 王宇晖
doaj +2 more sources
China's Eco‐Civilisation, Climate Leviathan, and Hobbesian Energy Transition
Abstract Scholars have hitherto tended to theorise China's ecological civilisation project either as a form of environmental authoritarianism or as a vision of eco‐socialism. This paper contributes to the conversation by conducting a textual analysis of Chinese scholarly discussions on eco‐civilisation.
David Chen
wiley +1 more source
以黄土丘陵区典型侵蚀沟道为对象,基于沟道剖面有机碳和137Cs数据,采用碳库重分布模型估算了典型沟道侵蚀诱发的CO2通量,并通过检验模型预测效率、解析影响因子,提出了模型校正的思路。结果表明:(1)在长期侵蚀作用下,沟道侵蚀区和沉积区均表现为剧烈的侵蚀效应,侵蚀区侵蚀速率介于30.99~46.44 mm/a,沉积区侵蚀速率介于34.20~37.88 mm/a,沉积区土壤流失速率略小于侵蚀区;(2)碳库重分布模型估算显示,侵蚀区与沉积区均表现为较强烈的碳源效应,侵蚀区CO2通量介于18.41~28.44 ...
郝旺林
doaj
新疆资源植物种类多,数量丰富,有许多特有种,是十分宝贵的自然资源。该项研究以乌鲁木齐为点,进行了野生资源植物的调查和重点的成分分析。调查了药用、淀粉、食品工业及维生素原料、油料、芳香油、鞣料、纤维等资源植物的种类、分布、经济价值等,计134种,对资源植物的经济意义及其开发利用提出了具体的建议。该项研究为开展全新疆资源植物研究开创了良好开端 ...
中国科学院新疆生物土壤沙漠研究所
core
为了阐释外源有机碳在土壤有机碳运转中的作用机制,以黑土为供试材料,进行了5年的室外培养试验,并结合室内全土及颗粒组分单独矿化培养试验,研究了不同外源有机碳对黑土有机碳(SOC)、颗粒有机碳(POC)含量及其矿化特征的影响。试验包括单施化肥、牛粪配施化肥、鸡粪配施化肥、秸秆配施化肥和树叶配施化肥5个处理。结果表明:(1)单施化肥黑土SOC的损失主要来源于POC的损失,外源有机碳有利于SOC和POC的累积,与对照相比,禽畜粪便处理的SOC和POC平均增加幅度分别为16.6%和27.8 ...
曲晓晶, 吴景贵
doaj
基于渭河陕西段及其支流河道16个采样点中沉积物的总氮(TN)、总磷(TP)和总有机碳(TOC)含量,运用C/N和N/P比值法研究沉积物中营养元素的可能来源,并采用有机污染指数法评价沉积物污染状况。结果表明,沉积物中TN含量为0.069~3.839 g/kg,66.1%的样品含量低于平均值0.639 g/kg;TP含量为0.453~1.841 g/kg,62.7%的样品含量低于平均值0.713 g/kg;TOC含量为0.772~25.221 g/kg,62.3%的样品含量低于平均值5.609 g/kg ...
何琪琳, 张风宝, 杨明义
doaj
依據2009年12月31日農委會公布「有機農產品及有機農產加工品驗證基準」修正規定,可應用於有機栽培之病蟲害防治技術及資材共24項,其中用於病害防治之資材有:(1)抗病品種、(2)利用不含合成化學物質之紙袋、網袋、塑膠布及不織布袋等防護、(3)種子消毒(浸泡醋、次氯酸鈣、次氯酸鈉或二氧化氯)、(4)大蒜、辣椒、蔥、韭菜、苦楝、香茅、薄荷、芥菜、萬壽菊、無患子等浸出液或天然抽出液、(5)海藻、(6)咖啡粕、苦茶粕或未添加香料之菸葉渣、(7)草木灰、(8)釀造醋、酒類及植物油、(9)石灰、石灰硫磺合劑 ...
謝廷芳;黃振文;黃鴻章
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