Results 21 to 30 of about 930,388 (147)

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]

open access: yesShipin kexue jishu xuebao, 2016
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

Drought decreases carbon flux but not transport speed of newly fixed carbon from leaves to sinks in a giant bamboo forest

open access: yesJournal of Ecology, Volume 113, Issue 7, Page 1746-1759, July 2025.
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

Wild Cicer species exhibit superior leaf photosynthetic phosphorus‐ and water‐use efficiencies compared with cultivated chickpea under low‐phosphorus conditions

open access: yesNew Phytologist, Volume 247, Issue 1, Page 144-159, July 2025.
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

人工湿地在水质净化中的应用及研究进展

open access: yesGongye shui chuli, 2017
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

open access: yesAntipode, Volume 57, Issue 3, Page 830-861, May 2025.
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

黄土丘陵区典型沟道侵蚀诱发的CO2通量估算

open access: yesShuitu Baochi Xuebao, 2022
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  

乌鲁木齐资源植物

open access: yes, 2010
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  

外源有机碳对黑土有机碳及颗粒有机碳的影响

open access: yesShuitu Baochi Xuebao, 2017
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  

渭河陕西段河道沉积物中碳氮磷来源分析及污染评价

open access: yesShuitu Baochi Xuebao, 2020
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  

有機可用資材防治作物病害之研究現況與展望

open access: yes, 2019
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
core  

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