Results 1 to 10 of about 1,090 (101)
Research Progress on Functional Carbohydrates(功能性碳水化合物研究进展) [PDF]
Shipin kexue jishu xuebao, 2023 Carbohydrates exist widely in nature, mainly from plants, animals, microorganisms. Carbohydrates are generally divided into four groups:monosaccharides, disaccharides, oligosaccharides and polysaccharides.
JIN Zhengyu(金征宇) +2 more
doaj +1 more source
Prioritizing global tall forests toward the 30 × 30 goals
Conservation Biology, Volume 37, Issue 6, December 2023., 2023 Abstract The Global Deal for Nature sets an ambitious goal to protect 30% of Earth's land and ocean by 2030. The 30 × 30 initiative is a way to allocate conservation resources and extend protection to conserve vulnerable and underprotected ecosystems while reducing carbon emissions to combat climate change.
Qiongyu Huang +4 more
wiley +1 more source
Gongye shui chuli, 2021 碳源不足已成为人工湿地脱氮受限的重要因素。植物材料因富含丰富的纤维素，且成本低廉、可再生，在自然环境中可广泛获取，具有作为外加碳源应用于人工湿地脱氮过程中的潜力。为研究添加植物碳源对人工湿地脱氮过程的影响，选取3种常见植物材料作为潜在碳源，探究其释放特性，并作为外加碳源，研究在不同条件下对人工湿地脱氮效果和N2O的释放量的影响。研究结果表明：植物材料可以很好地释放有机碳，其累积释碳量为119.78~172.84 mg/g，添加植物碳源进行人工湿地试验，HRT为3 d、碳氮比为6、温度为30 ℃时 ...
许兵, 张旭, 刘佳, 成小翔
doaj +2 more sources
Factors that shape large‐scale gradients in clonality
Journal of Biogeography, Volume 50, Issue 5, Page 827-837, May 2023., 2023 Abstract Aim Many plant species reproduce clonally. However, ecologists still have much to learn about the factors that shape large‐scale patterns in plant clonal growth and reproduction, especially in the southern hemisphere. We addressed this knowledge gap by quantifying relationships between reproductive mode and a suite of plant characteristics and
Hongxiang Zhang +4 more
wiley +1 more source
Status Quo of Comprehensive Utilization and Development Trend of Citrus By-Product Resources(柑橘副产物资源综合利用现状及发展趋势) [PDF]
Shipin kexue jishu xuebao, 2021 Citrus is the most productive fruit in the world and China. China is a big country in the production and processing of citrus. With the rapid development of citrus planting and processing industry, the by-product resources such as fruit dropping and ...
SHAN Yang(单杨) +4 more
doaj +1 more source
Gongye shui chuli, 2021 针对污水处理反硝化过程碳源不足导致的脱氮效率低的问题，以美人蕉、芦竹、香茅、香蒲4种天然植物材料为研究对象，首先通过静态释放实验探究了经预处理的不同植物材料的释碳性能和氮磷释放规律；然后以4种经预处理的植物材料作为外加碳源，考察了其反硝化脱氮能力；最后利用扫描电镜对预处理前后植物材料表面微观结构进行了表征。结果表明：不同植物材料水解释碳存在差异，其中香茅释碳量最大，芦竹次之；相较于美人蕉和香蒲，以芦竹和香茅作为外加碳源的反硝化脱氮效果更好，平均NO3--N去除率分别达到90.53%和89.46 ...
彭锦玉 +3 more
doaj +2 more sources
Biological activities of antifungal protein and chitin oligosaccharide(几丁质发酵液的生物活性)
Zhejiang Daxue xuebao. Lixue ban, 2006 鞘氨醇单胞菌CJ-5菌株在以几丁质为碳源的培养基上生长，既产生几丁质酶又产生壳聚糖酶.利用其发酵液进行抑制真菌，促进植物生长等生物活性的研究及作用机理的探讨，发现CJ-5菌株的几丁质发酵液具有抑制番茄枯萎病菌，促进水稻扩叶生根的效果，显示了潜在的防治植物病原菌及促进植物生长的能力.
TENGShao-hui(滕少辉) +3 more
doaj +1 more source
Gongye shui chuli, 2020 碳源不足已成为人工湿地脱氮受限的重要因素，植物材料因其经济易得、安全有效的特点，被用作外加碳源应用于人工湿地脱氮过程中。通过综述植物碳源的特性、利用方式及其在湿地脱氮中的应用效果，揭示植物碳源的功能及使用机制，为提高人工湿地脱氮效率提供依据及建议。最后，归纳了该研究领域内存在的主要问题，并对今后的发展方向进行了展望。
丁怡 +4 more
doaj +2 more sources
Shuitu Baochi Xuebao, 2023 在实现"碳达峰、碳中和"的目标背景下,明确农业温室气体排放现状,模拟预测峰值,为促进江苏省农业低碳减排提供科学依据。基于农业物资投入和农田土壤利用2类碳源,采用IPCC碳排放系数法和清单法综合测算江苏省1990-2020年间种植业碳排放量,运用Tapio脱钩模型对农业碳排放量与农业经济增长的脱钩关系进行分析,并根据灰色预测模型GM(1,1)对2021-2060年碳排放量进行预测。结果表明:(1)2020年江苏省种植业碳排放为1 999.53万t,1990 ...
范振浩, 邢巍巍, 卜元卿, 刘娟
doaj
Gongye shui chuli, 2014 在不同条件下对3种湿地植物枯落物进行水解，以获得相应的植物碳源。利用提取的植物碳源，研究了进水碳氮比对水平潜流人工湿地脱氮效果的影响。结果表明，对以硝态氮为氮源的反硝化过程，补充碳源对硝态氮和总氮的去除有明显的促进作用；对以氨氮和硝态氮为氮源的脱氮过程，随碳氮比的升高，硝态氮和总氮去除率增大，而氨氮由于受到溶解氧的制约，其去除率下降，并最终制约了总氮去除率的增大程度。
丁怡, 王玮, 王宇晖, 宋新山
doaj +2 more sources