دورية أكاديمية
[Responses of soil microbial carbon use efficiency to short-term nitrogen addition in Castanopsis fabri forest].
| العنوان: | [Responses of soil microbial carbon use efficiency to short-term nitrogen addition in Castanopsis fabri forest]. |
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| عنوان ترانسليتريتد: | 罗浮栲林土壤微生物碳利用效率对短期氮添加的响应. |
| المؤلفون: | Dai H; School of Geographical Science, Fujian Normal University, Fuzhou 350007, China.; Key Laboratory of Humid Sub-tropical Eco-geographical Process of Ministry of Education, Fujian Normal University, Fuzhou 350007, China., Zeng QX; School of Geographical Science, Fujian Normal University, Fuzhou 350007, China.; Key Laboratory of Humid Sub-tropical Eco-geographical Process of Ministry of Education, Fujian Normal University, Fuzhou 350007, China., Zhou JC; School of Geographical Science, Fujian Normal University, Fuzhou 350007, China.; Key Laboratory of Humid Sub-tropical Eco-geographical Process of Ministry of Education, Fujian Normal University, Fuzhou 350007, China., Peng YZ; School of Geographical Science, Fujian Normal University, Fuzhou 350007, China.; Key Laboratory of Humid Sub-tropical Eco-geographical Process of Ministry of Education, Fujian Normal University, Fuzhou 350007, China., Sun XQ; School of Geographical Science, Fujian Normal University, Fuzhou 350007, China.; Key Laboratory of Humid Sub-tropical Eco-geographical Process of Ministry of Education, Fujian Normal University, Fuzhou 350007, China., Chen JQ; School of Geographical Science, Fujian Normal University, Fuzhou 350007, China.; Key Laboratory of Humid Sub-tropical Eco-geographical Process of Ministry of Education, Fujian Normal University, Fuzhou 350007, China., Chen WW; Daiyun Mountain National Nature Reserve Administration Bureau, Quanzhou 362500, Fujian, China., Chen YM; School of Geographical Science, Fujian Normal University, Fuzhou 350007, China.; Key Laboratory of Humid Sub-tropical Eco-geographical Process of Ministry of Education, Fujian Normal University, Fuzhou 350007, China. |
| المصدر: | Ying yong sheng tai xue bao = The journal of applied ecology [Ying Yong Sheng Tai Xue Bao] 2022 Oct; Vol. 33 (10), pp. 2611-2618. |
| نوع المنشور: | English Abstract; Journal Article |
| اللغة: | Chinese |
| بيانات الدورية: | Publisher: Ying yong sheng tai xue bao bian ji wei yuan hui Country of Publication: China NLM ID: 9425159 Publication Model: Print Cited Medium: Print ISSN: 1001-9332 (Print) Linking ISSN: 10019332 NLM ISO Abbreviation: Ying Yong Sheng Tai Xue Bao Subsets: MEDLINE |
| أسماء مطبوعة: | Publication: Shenyang Shi : Ying yong sheng tai xue bao bian ji wei yuan hui Original Publication: Shenyang Shi : Ying yong sheng tai xue bao bian ji wei yuan hui, 1990- |
| مواضيع طبية MeSH: | Soil*/chemistry , Carbon*, Nitrogen/analysis ; Soil Microbiology ; Ecosystem ; Forests |
| مستخلص: | As an important parameter regulating soil carbon mineralization, microbial carbon use efficiency (CUE) is essential for the understanding of carbon (C) cycle in terrestrial ecosystems. Three nitrogen supplemental levels, including control (0 kg N·hm -2 ·a -1 ), low nitrogen (40 kg N·hm -2 ·a -1 ), and high nitrogen (80 kg N·hm -2 ·a -1 ), were set up in a Castanopsis fabri forest in the Daiyun Mountain. The basic physical and chemical properties, organic carbon fractions, microbial biomass, and enzyme activities of the soil surface layer (0-10 cm) were measured. To examine the effects of increasing N deposition on microbial CUE and its influencing factors, soil microbial CUE was measured by the 18 O-labelled-water approach. The results showed that short-term N addition significantly reduced microbial respiration rate and the activities of C and N acquisition enzymes, but significantly increased soil microbial CUE. β-N-acetyl amino acid glucosidase (NAG)/microbial biomass carbon (MBC), microbial respiration rate, β-glucosidase (BG)/MBC, cellulose hydrolase (CBH)/MBC, and soil organic carbon content were the main factors affecting CUE. Moreover, CUE significantly and negatively correlated with NAG/MBC, microbial respiration rate, BG/MBC, and CBH/MBC, but significantly and positively correlated with soil organic carbon. In summary, short-term N addition reduced the cost of soil microbial acquisition of C and N and microbial respiration, and thus increased soil microbial CUE, which would increase soil carbon sequestration potential of the C. fabri forest. |
| فهرسة مساهمة: | Keywords: microbial carbon use efficiency; microbial respiration rate; nitrogen addition; soil extracellular enzyme Local Abstract: [Publisher, Chinese] 作为调节土壤碳矿化过程的重要参数,微生物碳利用效率(CUE)对理解陆地生态系统中的碳循环至关重要。本研究在戴云山罗浮栲林设置对照(0 kg N·hm -2 ·a -1 )、低氮(40 kg N·hm -2 ·a -1 )和高氮(80 kg N·hm -2 ·a -1 ) 3个氮添加水平以模拟氮沉降,测定了表层(0～10 cm)土壤基本理化性质、有机碳组分、微生物生物量和酶活性;并利用 18 O标记水方法测定土壤微生物CUE,以更好地理解氮沉降加剧对微生物CUE的影响及其影响因素。结果表明: 短期氮添加显著降低了土壤微生物的呼吸速率、碳和氮获取酶活性,但显著增加了土壤微生物CUE。β-N-乙酰氨基酸葡糖苷酶(NAG)/微生物生物量碳(MBC)、微生物呼吸速率、β-葡萄糖苷酶(BG)/MBC、纤维素水解酶(CBH)/MBC和土壤有机碳含量是影响CUE的主要因素,且CUE与NAG/MBC、微生物呼吸速率、BG/MBC和CBH/MBC呈显著负相关,与土壤有机碳呈显著正相关。综上,短期氮添加导致土壤微生物获取碳和氮的成本降低,减少微生物呼吸,从而提高了土壤微生物CUE,这将有助于提高罗浮栲林土壤碳固存潜力。. |
| المشرفين على المادة: | 0 (Soil) 7440-44-0 (Carbon) N762921K75 (Nitrogen) |
| تواريخ الأحداث: | Date Created: 20221117 Date Completed: 20221121 Latest Revision: 20221121 |
| رمز التحديث: | 20231215 |
| DOI: | 10.13287/j.1001-9332.202210.013 |
| PMID: | 36384594 |
| قاعدة البيانات: | MEDLINE |
| تدمد: | 1001-9332 |
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| DOI: | 10.13287/j.1001-9332.202210.013 |