应用生态学报最新文献

{"title":"[Research advances in soil microbial carbon use efficiency in response to climate change].","authors":"Jian-Yu Dang, Xiao-Jian Ma, Xin-Yi Yang, Yu-Liang Pan, Xun-Yang He, Ke-Lin Wang, De-Jun Li, Pengpeng Duan","doi":"10.13287/j.1001-9332.202602.035","DOIUrl":"10.13287/j.1001-9332.202602.035","url":null,"abstract":"<p><p>Soil microbial carbon use efficiency (CUE), defined as the proportion of assimilated carbon allocated to microbial growth versus maintenance, is a key parameter regulating terrestrial soil organic carbon (SOC) storage. The response of CUE to climate change and its feedbacks profoundly affect global carbon cycle and soil carbon sequestration. At present, there are substantial uncertainties regarding the mechanisms underlying the responses of CUE to climate change and the ecological consequences. We synthesized research progress on soil microbial CUE over the past 20 years. First, we clarified the basic concept and computational approaches of CUE, and compared the principles, strengths, and limitations of three mainstream measurement techniques (isotope labeling method, stoichiometric model, and thermodynamic efficiency method). Second, we summarized the key biotic and abiotic factors influencing CUE. Focused on the mechanisms underlying the main and interactive effects of elevated atmospheric CO₂ concentration, climate warming, and altered precipitation patterns on microbial CUE, and based on a \"resource-cost trade-off\" framework, we discussed the potential mechanisms underlying the heterogeneous responses of CUE across different ecosystems, and summarized the bottlenecks and challenges that still existed in current research regarding methodological standardization, the analysis of deep soil processes, the quantification of multi-factor interaction effects, and the application of CUE in earth system models (ESMs). We proposed an integrative research framework spanning from micro-scale metabolic mechanisms to macro-scale carbon cycling patterns, emphasizing the need for methodological innovation, multi-scale networked observations, and model-experiment integration, to thoroughly reveal the dynamics and adaptive mechanisms of CUE under climate change.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"37 2","pages":"609-621"},"PeriodicalIF":0.0,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147349265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[The perceptions of community residents on the importance and satisfaction of ecosystem services and their influencing factors: A case study of Wolong Nature Reserve, China].","authors":"Le-Xin Zhao, Yi-Qiang Huang, Wen-Hui Ma, Jian-Ying Xu","doi":"10.13287/j.1001-9332.202602.026","DOIUrl":"10.13287/j.1001-9332.202602.026","url":null,"abstract":"<p><p>Nature reserves are of great significance in maintaining the supply of ecosystem services and sustaining development of local livelihoods. It is important to understand the perceptions of community residents on the importance and satisfaction with ecosystem services in protected areas, which is helpful for prioritizing ecosystem services and coordinating the relationship between ecological protection and resident livelihood development. With Wolong Nature Reserve as a case, we used the participatory rural appraisal method to the perceptions of community residents regarding the importance and satisfaction of ecosystem services. We further employed the importance-satisfaction analysis and multiple regression analysis to examine the differences in their perceptions of various ecosystem services and the influencing factors. The results showed that there were significant differences between the importance and satisfaction for the all types of ecosystem services, except for the regulating service of air purification. Importance-satisfaction analysis indicated that six ecosystem services (freshwater provision, natural disaster prevention, soil fertility maintenance, pest control, scientific knowledge and environmental education, and recreational tourism) were identified as high importance-low satisfaction, which requires high priority in reserve management. Local perceptions of ecosystem services were influenced significantly by the educational level, livelihood type, and geographical location. Residents with different education levels, livelihood types, and geographical locations exhibited different perceptions of the importance and satisfaction with ecosystem services. Among these, livelihood type and geographic location jointly affected residents' perception of importance and satisfaction, while educational level only had a significant impact on satisfaction perception.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"37 2","pages":"337-346"},"PeriodicalIF":0.0,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147349327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Effects of different types of biochar on phosphorus and stoichiometric characteristics of extracellular enzymes in paddy soil].","authors":"Xiao-Ge Fan, Rui-Qing Zhang, Wen-Bo Liu, Jun Fang, Xin Cui, Yan-Jun Chai, Min Zhang, Sheng-Dao Shan","doi":"10.13287/j.1001-9332.202602.012","DOIUrl":"10.13287/j.1001-9332.202602.012","url":null,"abstract":"<p><p>Understanding the stoichiometric characteristics of phosphorus and extracellular enzyme activity in paddy soil under the application of different types of biochar can improve phosphorus management and nutrient utilization efficiency. A two-year field experiment was conducted with treatments including no fertilization (CK), chemical fertilizer (NPK), and biochar amendments based on NPK: perishable organic waste biochar (WB), rice straw biochar (SB), and pig manure biochar (MB). Combined with enzyme vector analysis, we explored the effects of different biochar types on soil phosphorus availability and microbial carbon, nitrogen, and phosphorus-related enzyme activities. Results showed that the NPK treatment increased total phosphorus, available phosphorus, and crop yield by 39.8%-73.1%, 128.5%-131.0%, and 27.0%-33.9%, respectively. Compared to NPK, all three biochar treatments consistently elevated soil total phosphorus, with MB>WB>SB, where MB significantly increased by 108.8% and 156.0%. The MB treatment enhanced soil available phosphorus and phosphorus activation capacity by 297.1%-388.4% and 53.3%-143.1%, respectively, leading to average annual improvements of 12.1% in rice yield and phosphorus use efficiency. Biochar application boosted β-glucosidase (BG), N-acetyl-β-glucosaminidase (NAG), and leucine aminopeptidase (LAP) activities by 43.9%-90.4%, 15.7%-77.6%, and 84.5%-173.4%, respectively, but inhibited alkaline phosphatase (ALP) activity by 41.8%-54.9%. Soil enzyme carbon-phosphorus ratios in biochar treatments were significantly higher than in NPK, while carbon-nitrogen ratios were lower. Biochar application effectively alleviated microbial phosphorus limitation and may have shifted to nitrogen limitation. There were significant positive associations between soil total phosphorus and available phosphorus with BG, LAP activity, rice yield, and phosphorus use efficiency, but negative associations with ALP activity. In summary, biochar application enhances soil phosphorus availability and extracellular enzyme activity, mitigated microbial phosphorus limitation, an increased rice yield. The MB performed the best.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"37 2","pages":"511-520"},"PeriodicalIF":0.0,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147348615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Relationship between gully density and characteristics of watershed channel network in typical black soil region in Northeast China].","authors":"Hai-Yan Guo, Yan Zhang, Kun-Heng Li, Hui-Miao Xing, Xin-Meng Li","doi":"10.13287/j.1001-9332.202602.014","DOIUrl":"10.13287/j.1001-9332.202602.014","url":null,"abstract":"<p><p>We selected sixty-four survey units in the typical black soil (soil sub-class) distribution area of Northeast China, including 32 complete small watersheds and 32 non-closure small watersheds. All gullies were identified through high-resolution image visual interpretation. The Strahler stream order method was used to classify the gullies. We calculated the parameters such as small watershed characteristics, gully density (line and area density of gullies), and gully network characteristics. By analyzing the relationship between gully density and watershed characteristics, gully network evolution, and fractal dimensions, we explored the activity level and developmental potential of gullies in the black soil region. The results showed the line density of gullies in the surveyed watersheds ranged from 0.60 to 11.45 km·km^-2, with an average of 2.09 km·km^-2, and 35.9% exceeded moderate erosion levels. The area density of gullies ranged from 7136 to 160323 m²·km^-2, with an average of 31752 m²·km^-2. The highest gully order in small watersheds reached level 8, with 1662 first-order gullies accounting for 67.8%. The fractal dimension fitting curve of the network exhibited linear patterns, indicating significant fractal characteristics in the gully network. The tributary development was higher in the central and southern parts of the typical black soil distribution area, with greater complexity in the gully network. All surveyed watersheds were in the juvenile stage of gully development and were in an accelerated growth phase. There were no significant differences in gully density and gully network characteristics between the two types of small watersheds. Gully line density showed significant correlations with average watershed slope, shape coefficient, maximum gully order, and network fractal dimension, but no significant correlation with survey unit area. These findings would help clarify the spatial variation and deve-lopmental potential of gully density, providing a theoretical basis for gully erosion investigation and prevention in black soil regions.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"37 2","pages":"530-538"},"PeriodicalIF":0.0,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147349219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Seasonal responses of the quantity and composition of root exudates in <i>Cunninghamia lanceolata</i> to drought].","authors":"Heng Zhou, Jia-Yu Li, Cui Deng, Yong-Meng Jiang, Mao-Kui Lyu, Jin-Sheng Xie","doi":"10.13287/j.1001-9332.202602.007","DOIUrl":"10.13287/j.1001-9332.202602.007","url":null,"abstract":"<p><p>We simulated drought through 50% isolated rainfall exclusion and collected fine root exudates of <i>Cunninghamia lanceolata</i> during dry and wet seasons. Combined with total organic carbon (TOC) measurements and untargeted metabolomics (LC-MS) analysis, we investigated the seasonal responses of exudation rate and chemical composition of fine root exudates to drought stress. The results showed that there were significant seasonal variations in drought effects on root exudates. During dry season, the unit root length exudation rate and TOC concentration of root exudates decreased by 72.7% and 74.6%. In wet season, they increased by 58.0% and 35.4%, respectively. Organic acids, phenols, and amino acids were the dominant types in the root exudates under drought conditions. In dry season, defensive secondary metabolites such as phenols (e.g., phloroglucinol), flavonoids (e.g., catechin), and phenolic compounds (e.g., methyl mandelate) significantly increased, contributing to enhanced antioxidant capacity and regulation of rhizosphere microbial communities. In contrast, primary metabolites like sugars (e.g., glucose, deoxyribose) and organic acids (e.g., palmitic acid, 2-methylglutaric acid) significantly increased in wet season, promoting osmotic regulation and soil nutrient activation in <i>C. lanceolata</i>. Our results suggest that <i>C. lanceolata</i> adopts a \"dry season defense, wet season attack\" carbon allocation strategy to cope with drought stress, employing \"conservative defense\" through defensive secondary metabolites in dry season and \"active adaptation\" via resource-acquisitive primary metabolites in wet season.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"37 2","pages":"389-398"},"PeriodicalIF":0.0,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147349298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Soil regulatory effects on the decomposition of different litter components in <i>Pinus massoniana</i> plantation under nitrogen and phosphorus additions].","authors":"Jing Li, Yong-Wei Zhou, Ya-Fei Shen, Li-Xiong Zeng, Chang-Fu Liu, Rui-Mei Cheng, Wen-Fa Xiao","doi":"10.13287/j.1001-9332.202602.009","DOIUrl":"10.13287/j.1001-9332.202602.009","url":null,"abstract":"<p><p>In this study, we conducted a two-year nitrogen and phosphorus addition experiment with six treatments: control (0 kg N·hm^-2·a^-1, 0 kg P·hm^-2·a^-1), phosphorus (30 kg P·hm^-2·a^-1), low nitrogen (30 kg N·hm^-2·a^-1), low nitrogen + phosphorus (30 kg N·hm^-2·a^-1, 30 kg P·hm^-2·a^-1), high nitrogen (90 kg N·hm^-2·a^-1), and high nitrogen + phosphorus (90 kg N·hm^-2·a^-1, 30 kg P·hm^-2·a^-1). We investigated the decomposition of different litter components of aboveground (leaf, branch, fruit) and fine root litter (class Ⅰ-Ⅲ roots) in <i>Pinus massoniana</i> plantation, examined their relationships with soil chemical factors (e.g., pH, organic carbon, total nitrogen) and hydrolytic enzyme activities (e.g., α-1,4-glucosidase). We further quantified the relative contributions of soil factors to nutrient residue (e.g., soluble sugars, starch) and decomposition coefficients (<i>k</i>) following variation partitioning analysis. The results showed that decomposition coefficients varied significantly among litter components in the same treatment, with branches (<i>k</i>=0.42-0.49) being lower than leaves and fruits, and first-order roots (<i>k</i>=0.42-0.51) being lower than higher-order roots. Compared with single-nutrient addition, the low nitrogen + phosphorus treatment significantly enhanced litter decomposition and nutrient release. In contrast, high nitrogen treatment reduced soil pH by 23.1% and markedly inhibited decomposition. The high nitrogen + phosphorus treatment raised pH by 13.9%, effectively mitigating the adverse effect of high nitrogen. Soil enzyme activity and chemical factors jointly drove litter decomposition, with the independent contribution of enzyme activity (5.1%-15.2%) being overall higher than that of chemical factors (0.7%-6.5%). Soil enzyme activity was the key driving factor for the decomposition of litter influenced by exogenous nutrient input. In the management of <i>P. massoniana</i> plantations, it was necessary to avoid excessive or single application of nitrogen, and should appropriately apply phosphorus fertilizer based on the soil conditions. This was to enhance soil biological activities and promote litter decomposition and nutrient return.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"37 2","pages":"441-452"},"PeriodicalIF":0.0,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147349315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Soil microbial diversity and influencing factors of typical vegetations in the dry season of Nanling Mountains, China].","authors":"Zi-Yan Gao, Qu-Cuo Zhuoma, Ping Zhou, Wang-Qiu Deng, Mu Wang, Hai-Mei Yue, Ting Li","doi":"10.13287/j.1001-9332.202601.004","DOIUrl":"10.13287/j.1001-9332.202601.004","url":null,"abstract":"<p><p>Soil microorganisms are the most species-rich group in terrestrial ecosystems and serve as crucial bioindicators for assessing soil quality and ecosystem health. We investigated soil microbial community structure and function under dry season five typical vegetation types (ravine evergreen broad-leaved forest, montane evergreen broad-leaved forest, mixed coniferous-broad-leaved forest, montane meadow, montane elfin forest) in Nanling. Utilizing high-throughput sequencing technology, combined with redundancy analysis and Mantel test methods, we explored soil microbial diversity and the influencing factors. The results showed that the phylum Acidobacteria had the highest relative abundance of bacteria, accounting for 40.2%-49.7%, followed by Proteobacteria (28.3%-36.9%) and Actinobacteria (5.9%-8.4%). The relative abundance of Acidobacteria was highest in the montane meadow, while Proteobacteria was most abundant in the ravine evergreen broad-leaved forest. The genus candidatus <i>Solibacter</i> was most prevalent in the montane evergreen broad-leaved forest and lowest in the montane elfin forest. Ascomycota (11.9%-71.9%) and Basidiomycota (19.2%-84.3%) were the dominant fungal groups. Basidiomycota predominated in the ravine evergreen broad-leaved forest and montane evergreen broad-leaved forest, whereas Ascomycota was dominant in the mixed coniferous-broad-leaved forest, montane meadow, and montane elfin forest. At the genus level, <i>Russula</i> was the dominant fungal genus in ravine evergreen broad-leaved forest and montane evergreen broad-leaved forest. Chemoheterotrophy was the primary functional group for bacteria, with an average proportion of 65.3%, being higher in the ravine evergreen broad-leaved forest and montane elfin forest but lower in mixed coniferous-broad-leaved forest. For fungi, symbiotrophic and saprotrophic nutritional modes were the main functional groups, with average proportions of 46.1% and 43.5%, respectively. Symbiotrophic fungi were more abundant in the ravine evergreen broad-leaved forest and montane evergreen broad-leaved forest, while saprotrophic fungi were more prevalent in the mixed coniferous-broad-leaved forest, montane meadow, and montane elfin forest. Soil pH, total nitrogen, and total potassium were the main factors influencing bacterial communities, whereas altitude, ammonium, and nitrate were the primary factors affecting fungal communities. Altitude, ammonium, and total phosphorus were identified as key drivers of the spatial variation in soil microbial diversity under typical vegetation types in the Nanling region during the dry season.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"37 2","pages":"464-476"},"PeriodicalIF":0.0,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147349344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Variation and coordination of non-structural carbohydrate among organs of major woody plants in forest-grass ecotones of northern Hebei, China].","authors":"Rui Wang, Jin-Hua Liu, Cheng-Hao Li, Xu-Min Wang, Shuai-Ming Zhao, Xue-Hua Xu","doi":"10.13287/j.1001-9332.202602.003","DOIUrl":"10.13287/j.1001-9332.202602.003","url":null,"abstract":"<p><p>To elucidate the variation patterns and coordinated effects of non-structural carbohydrate (NSC) and their components across tree species and organs, we investigated <i>Quercus mongolica,</i> <i>Malus baccata</i>, and <i>Ulmus pumila</i> on different slope aspects (north, northwest, south, southwest slope) in the forest-grassland ecotone of northern Hebei Province. We examined the contents of soluble sugar, starch, and NSC in fine roots, branches, and leaves across slope aspects, to reveal the intra- and inter-specific variations and their driving factors. The results showed that the NSC and its component contents in all organs of the three tree species exhibited inconsistent variation patterns across the slope aspects. The NSC content in all organs of <i>Q. mongolica</i> ranged from 26.52 to 83.98 mg·g^-1 across slope aspects, while it ranged from 54.17 to 91.56 mg·g^-1 for <i>M. baccata</i> and 28.94 to 152.78 mg·g^-1 for <i>U. pumila</i>. Across all organs of the three tree species, the leaves of <i>U. pumila</i> exhibited the highest content of NSC and components. In contrast, <i>Q. mongolica</i> displayed the lowest levels in all organs, with the exception of a relatively higher soluble sugar content in fine roots. Both slope aspect and tree species significantly influenced organ NSC content. The intra-specific variation coefficients of NSC in different organs were relatively small. The inter-specific variation coefficients showed no significant differences among organs. Significant coordinated relationships were observed in NSC component contents among organs. There were positive relations for soluble sugar content between fine roots and branches. The soluble sugar content and starch content between fine roots and leaves exhibited significantly negative correlation. Redundancy analysis indicated that soil water content and pH were the primary environmental factors influencing the contents of NSC and its components in fine roots, branches, and lea-ves of the three tree species. <i>Q. mongolica</i> and <i>M. baccata</i> exhibited conservative strategy, while <i>U. pumila</i> exhibited acquisitive strategy.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"37 2","pages":"485-493"},"PeriodicalIF":0.0,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147349365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Effects of landscape pattern on the damage of pine wilt disease in the head region of the Three Gorges Reservoir].","authors":"Yan-Rong Fu, Yu Zeng, Yu Wu, Shun Ren, Jian-Ming Liu, Jian Gu, Gang-Zhi Peng","doi":"10.13287/j.1001-9332.202602.028","DOIUrl":"10.13287/j.1001-9332.202602.028","url":null,"abstract":"<p><p>The spread of pine wilt disease (PWD) is related to the spatial heterogeneity of the landscape within the affected area. Investigating the effects of landscape patterns on PWD severity can facilitate the construction of landscape ecological security patterns and contribute to long-term regional prevention and control strategies. Based on unmanned aerial vehicle (UAV) remote sensing data and forest resource inventory data, we adopted correlation analysis method and hierarchical segmentation in the linear mixed-effects model to evaluate the impacts of landscape patterns on PWD at both landscape and patch levels in the head region of the Three Gorges Reservoir. The results showed that larger patch sizes and higher landscape fragmentation were associated with lower PWD severity at the landscape level. Area characteristics and aggregation explained 45.9% and 29.3% of the variation in disease den-sity, respectively. At the patch level, the fragmentation of pure pine forest (host) patches was significantly positively correlated with disease density, while more regular patch shapes were associated with greater PWD severity. The area and connectivity of native dominant forest (non-host) patches were significantly positively correlated with disease density. The aggregation and connectivity of farmland and water (non-host) patches were significantly negatively correlated with the disease density. Therefore, fine-scale patch classification and integrated consideration of the landscape ecological processes in different patches would be crucial for accurately understanding the occurrence and spread of the PWD.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"37 2","pages":"583-590"},"PeriodicalIF":0.0,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147348681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Effects of sowing method and row spacing configuration on photosynthetic matter production and yield formation of wheat].","authors":"Ming-Hao Yang, Ju-Qing Ge, Yu Shi, Zhen-Wen Yu, Yong-Li Zhang, Zhen Zhang","doi":"10.13287/j.1001-9332.202602.015","DOIUrl":"10.13287/j.1001-9332.202602.015","url":null,"abstract":"<p><p>We explored the physiological mechanisms underlying the effects of sowing method and row spacing configuration on photosynthetic substance production and yield formation in wheat ('Jimai 22' variety) with a two-factor split-plot experiment. The main plots consisted of sowing method: wide precision sowing (K) and conventional strip sowing (T), while the subplots consisted of row spacing: 20 cm (R1), 25 cm (R2), and 30 cm (R3), resulting in six treatments. We measured flag leaf photosynthetic characteristics, senescence traits, and ¹³C assimilate accumulation and distribution under various sowing method and row spacing configurations. The results showed that KR2 treatment significantly increased SPAD values, net photosynthetic rate, transpiration rate, stomatal conduc-tance, superoxide dismutase activity, and soluble protein content in the flag leaf at 14, 21, and 28 days after flower-ing, with average increase of 23.8%, 16.3%, 16.8%, 15.6%, 14.4%, and 15.2%, respectively. It significantly reduced intercellular CO₂ concentration and malondialdehyde content by 11.9% and 12.1%, respectively. In addition, the KR2 treatment promoted the transport of ¹³C assimilates from stems and leaves to grains, and significantly increased yields by 17.5%, 10.7%, 24.9%, 10.1%, and 23.6% when compared with those in the KR1, KR3, TR1, TR2, and TR3 treatments, respectively. In summary, the 25 cm row spacing wide precision sowing method significantly improved photosynthetic characteristics of the flag leaf during the mid-to-late grain filling stage of wheat, delayed leaf senescence, and promoted allocation of photosynthetic products to grain, thereby achieving the highest yield.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"37 2","pages":"503-510"},"PeriodicalIF":0.0,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147348896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}