应用生态学报最新文献

{"title":"[Carbon footprint of major crop production under the goal of 'double carbon' in Xinjiang, China].","authors":"Lu Yang, Kai-di Yue, Li-Jie Zhang","doi":"10.13287/j.1001-9332.202503.028","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202503.028","url":null,"abstract":"<p><p>As the main cotton-producing area and an important production base of food in China, Xinjiang is facing the dual pressures of ensuring national food security and achieving low-carbon agriculture. A comprehensive accounting of carbon footprint of major crops can contribute to decision-making in agricultural structure adjustment and the environmental management in Xinjiang from the perspective of carbon emission reduction. Based on data of the planting area, yield, and agricultural input of wheat, maize, and cotton in Xinjiang from 2005 to 2021, we used the life cycle assessment method to calculate the production carbon footprint of the aforementioned three major crops and used the grey relational analysis to analyze their influencing factors. Results showed that during 2005-2021, the planting areas of wheat and maize varied with the planting area of cotton. The average annual carbon footprint per unit area of wheat, maize, and cotton were 2.21, 2.67, and 3.61 t CE·hm^-2, and the average annual carbon footprint per unit yield were 0.41, 0.35, and 1.91 t CE·t^-1 respectively. The carbon ecological efficiency of the three crops was in an order of wheat (10.99 t CE·t CE^-1) > maize (9.68 t CE·t CE^-1) > cotton (2.96 t CE·t CE^-1), the carbon production efficiency was maize (2.88 t·t CE^-1) > wheat (2.48 t·t CE^-1) > cotton (0.53 t·t CE^-1), and the carbon economic efficiency was cotton (7148.74×10³ yuan·t CE^-1) > maize (6094.32×10³ yuan·t CE^-1) > wheat (5904.23×10³ yuan·t CE^-1). As for carbon input structure, farmland N₂O emission and chemical fertilizer input were the main sources of the production carbon footprint. Total mechanical power, crop planting area, effective irrigation area, agricultural film usage, compound fertilizer and nitrogen fertilizer input were the main driving factors. Based on our analysis of carbon footprint of wheat, maize, and cotton in Xinjiang in 2022 and 2023, we found that this area need to moderately adjust the planting structure in the future. At the same time, it should develop science and technology to improve the utilization efficiencies of chemical fertilizers, agricultural films, irrigation and mechanical operations to achieve the low-carbon production of crops while ensuring the national food security strategy.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 4","pages":"1147-1158"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144081113","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 water-saving irrigation on seedling growth, stomatal characteristics and photosynthetic properties of maize in secondary salinized cultivated land].","authors":"Fu-Qin Wang, Jian-Min Yue, Wen-Wen He, Yu-Long Li, Yang Li, Guo-Jun Ma","doi":"10.13287/j.1001-9332.202504.011","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202504.011","url":null,"abstract":"<p><p>To clarify the alleviating effect of different water-saving irrigations at the seedling stage of maize under salt stress in arid irrigation area, we used 'Xianyu 1225' maize as the test material, and set up three irrigation treatments (T1, T2, and T3) in the salinized land in the Yellow River irrigation area. T1 treatment was the surface furrow irrigation at the sowing stage and three-leaf stage (T1, irrigation amount was 65 mm at both stages). Both T2 and T3 treatments were furrow irrigation at the sowing stage and drip irrigation at three-leaf stage (the irrigation amount at the sowing stage was 65 mm, and the irrigation amount at the three-leaf stage was 39 and 52 mm, respectively). The control (CK) was furrow irrigation at the sowing stage and the three-leaf stage in non-salinized land (irrigation amount was 65 mm at both stages). We investigated the effects of water-saving irrigation on leaf morphology, photosynthetic physiology, photosynthetic tissue structure and leaf fluorescence characteristics of maize seedlings under salinity stress. The results showed that furrow irrigation combined with drip irrigation could effectively reduced soil salt content and weakened soil salinity returning to the 0-20 cm soil layer of salinized land. Compared with CK, different irrigation treatments significantly changed the morphology, reduced antioxidant enzyme activities, stomatal structure, photosynthetic pigment content, photosynthetic fluorescence performance of maize leaves under salinity stress. Such decreases were the largest under the T1 treatment, and were relieved under T2 and T3 treatments. Furthermore, T3 treatment differed little in the antioxidant enzyme activities, net photosynthetic rate, transpiration rate, effective photochemical efficiency of maize leaves compared to CK. According to the results of structural equation model analysis, the water-saving irrigation increased the maximum photochemical efficiency of maize and alleviated the inhibition of salt stress on maize growth at seedling stage by reducing the Na⁺ content of plants, protecting the photosynthetic tissue and adjusting the proportion of photosynthetic pigments. In conclusion, the T3 mode was the best irrigation strategy in the study area.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 4","pages":"1013-1023"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144080624","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 potassium and trace elements on soil ecological functions and health status in Loess Plateau dryland farmland].","authors":"Huan Guo, Chun-Yue Li, Zhao-Yang Kou, Chuan-Yu Gao, Le Zhang, Yi-Fan Li, Ting-Hui Dang","doi":"10.13287/j.1001-9332.202504.017","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202504.017","url":null,"abstract":"<p><p>Understanding the effects of potassium and trace element application on soil ecological functions and soil health in farmland can provide theoretical basis for soil nutrition management. In this study, we examined the impacts of potassium and trace element addition on soil ecological function and health in farmland with long-term application of nitrogen and phosphorus fertilizer in Changwu Agricultural Ecological Experimental Station, Chinese Academy of Sciences. There were six treatments, a control without potassium and trace elements (CK), K addition (30 kg·hm^-2 of potassium chloride), Cu addition (15 kg·hm^-2 of copper sulfate), B addition (11.25 kg·hm^-2 of borax), Mn addition (22.5 kg·hm^-2 of manganese sulfate), and Zn addition (15 kg·hm^-2 of zinc sulfate). We collected soil samples of 0-20 cm layer to analyze the soil physical and chemical properties and microbial acti-vity indicators, constructed the minimum data set and calculated the soil health index. The results showed that K addition significantly increased soil available phosphorus content by 27.2%, increased alkaline phosphatase activity by 52.2%, and improved the bioavailability of soil phosphorus. The addition of Cu significantly increased soil respiration by 40.8% and N-acetylglucosamine enzyme activity by 63.6%, enhancing soil carbon and nitrogen conversion. The content of total phospholipid fatty acids, bacterial phospholipid fatty acids, and anaerobic phospholipid fatty acids was increased by 8.5%, 7.2%, and 12.3%, respectively, and microbial biomass carbon and nitrogen contents were promoted. The addition of Zn and B significantly reduced the biomass of bacteria, arbuscular mycorrhizal fungi, Gram positive bacteria, Gram negative bacteria, and actinomycetes by 35.3%, 32.2%, 31.5%, 40.1%, 34.5%, and 22.6%, 26.4%, 20.5%, 23.9%, and 22.6%, respectively, and reduced soil respiration. The addition of Mn significantly increased soil β -1,4-glucosidase activity (45.6%), but reduced the biomass of bacteria, arbuscular mycorrhizal fungi, Gram positive bacteria, Gram negative bacteria, actinomycetes, and soil respiration. The soil health index of each treatment was as follows: K(0.94)>Cu(0.80)>CK(0.78)>B(0.75)=Mn(0.75)>Zn(0.71). In summary, K and Cu addition to farmland soil in the Loess Plateau would be beneficial for the health and stability of soil ecosystems.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 4","pages":"984-994"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144080017","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 tree forms and grass mulching on microclimate in <i>Ziziphus jujuba</i> orchards in the plain regions of southern Xinjiang, China].","authors":"Ran-Qi Shi, Han-Sheng Wang, Wen-Kai Deng, Xia Zhang, Yuping Liu, Jian Huang, Gang Han","doi":"10.13287/j.1001-9332.202504.015","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202504.015","url":null,"abstract":"<p><p>Tree form training and inter-row grass mulching are important components of modern orchard management. To explore optimal cultivation and management measures for mitigating the hazard effects of continuous high temperatures on dwarfed <i>Ziziphus jujuba</i> in the plain regions of southern Xinjiang, we conducted a split-plot experiment in a <i>Z. jujuba</i> orchard with three tree forms (open-center shape, OS; low spindle shape, LS; high spindle shape, HS) and two inter-row management practices (grass mulching, GR; clean cultivation control, CK). During a period of continuous high temperatures and irrigation suspension in August of the grass mulching year, we mea-sured air temperature and relative humidity at the upper, middle, and lower parts of the outer canopy (UC, MC, LC) at 10:00 and 16:00 every second day, as well as soil temperature and moisture at different soil depths (10 and 20 cm) under the canopy projection. Then, we analyzed the effects of tree form and inter-row management on microclimate factors. The results showed that: 1) tree form significantly influenced air temperature and soil tempe-rature. Air temperature of HS was reduced by 0.76 ℃ only at 10:00 compared with that of OS, while there was no significant change in LS compared with the other two tree forms. Soil temperature of HS was reduced by 0.98-1.75 ℃ and 0.95-1.29 ℃ compared with that of OS and LS, respectively. Soil temperature of LS was reduced by 0.17-0.46 ℃ compared with OS. 2) Grass mulching significantly influenced all microclimatic factors. Compared with CK, air and soil temperature of GR were reduced by 1.46-3.21 ℃ and 0.82-4.79 ℃, respectively, and the relative humidity of GR was increased by 24.1%-54.9%, but soil moisture of GR increased by 5.3% only at 10:00. 3) There were significant interactions between grass mulching and tree form to affect all microclimate factors, demonstrating strong cooling and humidifying effects. Grass mulching played a dominant role in regulating air temperature and relative humidity at the outer canopy of <i>Z. jujuba</i> trees, while tree form had a weaker adjustment effect. The microclimate indicators of both spindle shaped <i>Z. jujuba</i> trees exhibited higher sensitivity to grass mulching. The interaction between grass mulching and tree form played a prominent role in regulating soil temperature and moisture under canopy projection. In conclusion, inter-row grass mulching could serve as the primary practice for microclimate regulation of <i>Z. jujuba</i> trees, and its combination with spindle-shaped tree forms demonstrated beneficial effect in improving <i>Z. jujuba</i> treeś microclimate and mitigating the negative effects of high temperature in the plain region of southern Xinjiang.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 4","pages":"1127-1134"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144081071","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":"[Predicting the impact of climate change on the habitat distribution of <i>Grus nigricollis</i> based on the MaxEnt model].","authors":"Cai-Hong Luo, Wan-Yu Wang, Jin-Xia Huang, Peng Wang, Mao-Hua Ma, Ji-Long Chen, Cun-Feng Zhao","doi":"10.13287/j.1001-9332.202504.032","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202504.032","url":null,"abstract":"<p><p>Under the context of global climate change, the shifts in suitable habitats of different species have become one of the major threats to biodiversity. We simulated the distribution habitats of <i>Grus nigricollis</i> under current climatic condition and predicted potential changes under three climate scenarios (SSP126, SSP245, and SSP585) with the MaxEnt model based on the distribution records of <i>G. nigricollis</i> and environmental variables. The results showed that: 1) Elevation, annual temperature range, and mean temperature of the wettest quarter were the main environmental factors affecting the distribution of potential breeding habitats for <i>G. nigricollis</i>, while the wintering habitats were significantly influenced by factors such as isothermality, elevation, and temperature annual range. 2) Under the current climate condition, the breeding habitats of <i>G. nigricollis</i> were mainly distributed in Xinjiang, Gansu, Qinghai, Tibet, Sichuan of China, as well as India, with a highly suitable breeding area of 27.07×10⁴ km². The wintering grounds were primarily located in Tibet, Sichuan, Yunnan of China, as well as Bhutan, Nepal, India, and Myanmar, with a highly suitable wintering area of 21.15×10⁴ km². 3) Under future climate scenarios, the overall potential suitable habitats for <i>G. nigricollis</i> remained stable, with the retention rate of stable areas exceeding 80%. Among these, the breeding habitats showed an increasing trend, while the wintering habitats exhibited a decreasing trend. 4) Under different climate scenarios, the centroid of breeding ground of <i>G. nigricollis</i> would gene-rally move southeastward, while the centroid of wintering ground mainly moved westward, potentially reducing migration distance. By predicting the changes in the potential suitable habitat for <i>G. nigricollis</i> on a large regional scale under future climate scenarios and revealing the impact of climate change on their distribution, this study could provide a scientific basis for the conservation of <i>G. nigricollis</i> and the formulation of relevant strategies.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 4","pages":"1251-1260"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144080988","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 nitrogen addition on <i>Arachis hypogaea</i> \"Qicai\"-rhizobia symbiosis and biomass allocation].","authors":"Lin Li, Yi Sun, Xiao-Qiong Yang, Hai-Dong Fang, Liang-Tao Shi, Guang-Xiong He, Jian-Lin Yu, Bang-Guo Yan","doi":"10.13287/j.1001-9332.202504.010","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202504.010","url":null,"abstract":"<p><p>To reveal how rhizobia affects biomass allocation of peanuts under different nitrogen concentrations, we conducted a pot experiment by treatments of <i>Arachis hypogae</i>a \"Qicai\" with and without <i>Bradyrhizobium</i> inoculation to investigate the characteristics of plant biomass allocation and symbiotic nodulation at the nitrogen addition level of 0, 8, 16, 32, 64 and 128 mmol·L^-1. The results showed that: 1) Under non-inoculation, the addition of low-level nitrogen (8-32 mmol·L^-1) had limited impact on plant biomass. When nitrogen addition level reached 64 mmol·L^-1, total plant biomass, leaf biomass, leaf area, and total net photosynthetic rate increased significantly by 82.1%, 116.6%, 116.1% and 122.1% respectively in compared with those without nitrogen addition (0 mmol·L^-1). 2) Under the condition of inoculation, total plant biomass, leaf biomass, leaf area, and total net photosynthetic rate increased under the nitrogen addition level of 16 mmol·L^-1 by 65.3%, 97.5%, 91.7%, and 112.8%. The nodulation amount of plants and the total amount of leghemoglobin first increased and then decreased with the increases of nitrogen addition level, reaching their maximum values at 49.00 mg·plant^-1 and 0.12 mg·plant^-1 respectively at the nitrogen addition level of 16 mmol·L^-1. When the nitrogen addition level reached 64 mmol·L^-1, they decreased significantly. There was no nodulation of roots when the nitrogen addition was 128 mmol·L^-1. 3) Rhizobia inoculation significantly increased leaf biomass, aboveground biomass, leaf area, and total net photosynthetic rate when nitrogen addition level ranged from 8 to 64 mmol·L^-1, with an overall increase of 43.3%, 37.6%, 34.5%, and 53.8% respectively. However, rhizobia inoculation did not affect those indices when the nitrogen addition level was 0 or 128 mmol·L^-1. Overall, rhizobia inoculation significantly increased the allometric growth constants of leaf-root and leaf-total biomass, and decreased the allometric growth constants of root-stem and root-total biomass. In conclusion, peanuts actively adjust resource allocations among different organs with a trade-off between environmental nitrogen absorption and symbiotic nitrogen fixation, which would maximize the benefit of resource investments. Among the N addition levels involved in this study, 16 mmol·L^-1 is optimal for the symbiotic nodulation of <i>A. hypogae</i>a \"Qicai\" and <i>Bradyrhizobium</i>.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 4","pages":"1109-1117"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144081167","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":"[Application of multi-rotor UAV-borne flux observation system in carbon dioxide flux monitoring of reed wetland].","authors":"Xiao-Wen Jiang, Guang-Sheng Zhou, Xing-Yang Song","doi":"10.13287/j.1001-9332.202504.003","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202504.003","url":null,"abstract":"<p><p>The accurate monitoring of ecosystem carbon flux is the key to scientific assessment of terrestrial carbon sequestration. There is a big challenge for the tower-based eddy covariance system to cover multiple ecosystem types in a region. We introduced a multi-rotor UAV-borne flux observation system, and evaluated its observational accuracy based on the comparison of carbon flux between the multi-rotor UAV-borne flux observation system and the tower-based eddy covariance system within an experiment conducted in the reed wetland of the Liaohe Delta from July 27 to 29, 2023. The results showed that the multi-rotor UAV-borne flux observation system could monitor ecosystem carbon flux well, and the observed carbon flux source area was basically consistent with the eddy covariance system. The half-hour ecosystem carbon flux was significantly correlated with the observation results of the eddy correlation system, with a correlation coefficient of 0.889 and a root mean square error of 0.881. Our results provided a scientific basis for using the multi-rotor UAV-borne flux observation system to monitor ecosystem-atmosphere flux exchange across different ecosystem types.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 4","pages":"1189-1196"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144081109","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":"[Aluminum absorption capacity of different cultivars of <i>Hydrangea macrophylla</i> seedlings under aluminum stress and the physiological and biochemical mechanisms].","authors":"Wen-Juan Chen, Shuang-Shuang Chen, Jing Feng, Hui-Jie Chen, Hui-Min Zhou, Xint-Ong Liu, Xu-Hui Zhang, Yan-Ming Deng","doi":"10.13287/j.1001-9332.202504.019","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202504.019","url":null,"abstract":"<p><p><i>Hydrangea macrophylla</i> exhibits strong tolerance to acid and aluminum stress. Many cultivars can absorb Al³⁺ from soils, resulting in variations of their flower color from red to blue. This characteristic presents a potential avenue for the ecological remediation of aluminum-rich acidic soils. To assess the capacities of aluminum absorption among different cultivars, we utilized the cutting seedlings of 45 popular <i>H. macrophylla</i> cultivars via hydroponic culture, which were treated under 0 (control) and 800 μmol·L^-1 Al₂(SO₄)₃. The aluminum absorption abilities were determined through root tip staining and aluminum content determination methods. We selected two representative cultivars with the strongest or weakest aluminum absorption capacities for further investigation of the physiological and biochemical mechanisms under aluminum stress. The results showed that the 45 cultivars could be categorized into five levels according to their aluminum absorption capacities: strong, relatively strong, intermediate, relatively weak, and weak, comprising 2, 11, 15, 15, and 2 cultivars, respectively. Amongst them, Bailer and White angel were identified as representative of strong and weak aluminum absorption capacities, respectively. In comparison to White angel, the aluminum-treated Bailer exhibited significant increases in chlorophyll content, transpiration rate, net photosynthetic rate, intercellular CO₂ concentration, and stomatal conductance with significant increase of 24.8%, 63.9%, 11.2%, 9.2%, and 66.7%, root length, root surface area, root volume, and root tip number increased by 4.7%, 2.9%, 14.3%, and 7.8%, the activities of antioxidant enzymes (peroxidase, catalase, and superoxide dismutase), and the contents of soluble sugar and soluble proteins exhibited significant increases by 88.4%, 35.3%, 7.7%, 2.4%, and 21.7% in the roots, and 78.4%, 103.7%, 101.1%, 138.9%, and 18.1% in the leaves, respectively. These findings suggested that Bailer could effectively mitigate damage from Al stress by enhancing photosynthesis, antioxidant enzymatic activities, and nonenzymatic antioxidants, thereby improving its aluminum absorption ability and tolerance, which has the potential application in the remediation of aluminum-rich acidic soils.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 4","pages":"1099-1108"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144081130","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":"[Long-term effects of forest fires on soil physicochemical properties, enzyme activities, and microbial communities in the broad-leaved Korean pine forest of the Xiaoxing'an Mountains, Northeast China].","authors":"Jia-Cong Che, Jia Yang, Zheng-Hong Wu, Hui-Yan Gu","doi":"10.13287/j.1001-9332.202504.014","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202504.014","url":null,"abstract":"<p><p>The broad-leaved Korean pine forest in the Xiaoxing'an Mountains is representative of temperate mixed coniferous and broad-leaved forests. In this study, we selected burned area of broad-leaved Korean pine forest and the adjacent unburned area (control) to investigate soil physicochemical properties, enzyme activities, and microbial characteristics after 28 years natural recovery. We further analyzed the main soil factors influencing enzyme activities and microbial communities. The results showed that: 1) soil total nitrogen, alkali-hydrolyzable nitrogen, and water content in the burned area were significantly lower than the control by 28.0%, 39.3% and 4.5%, respectively. However, the activities of catalase, restriction endonuclease, urease, nitrate reductase, and soil dehydrogenase were significantly increased. 2) The α- and β-diversity of soil bacterial and fungal communities in the burned area was not different from those of the control after 28 years recovery, but marked differences were observed in community composition at phylum and genus levels. 3) Redundancy analysis and structural equation modeling revealed that soil pH was the primary factor influencing enzyme activities and microbial communities. 4) After 28 years, the stability and complexity of soil bacterial network in the burned area increased, while the fungal network showed an opposite trend. These results suggested that forest fires have long-term effects on soils, with soil physicochemical properties, enzyme activities, and microbial communities exhibiting distinct post-fire recovery patterns.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 4","pages":"1071-1080"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144080713","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":"[Connotation, characteristics, significance, and development pathways of new quality productive force in agriculture].","authors":"Guo-Qin Huang","doi":"10.13287/j.1001-9332.202504.040","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202504.040","url":null,"abstract":"<p><p>Since General Secretary Xi Jinping first proposed the concept of \"new quality productive force\" in September 2023, the term \"new quality productive force in agriculture\" has also been proposed and attracked increased attention. The new quality productive force in agriculture is the application and specific expression of the new quality productive force in the area of agriculture. Its essence is the transformation, application and industrialization of modern high-tech achievements in agriculture, aiming to generate new industry, new business type, new mode, new kinetic energy, and new functions, to achieve high efficiency of resources, high efficiency of production, high speed of development, high quality of products, and high-quality talents, to promote the modernization of agriculture and rural areas, and ultimately to build a powerful agricultural country. Compared with the traditional agricultural productivity, there are eight new characteristics in new quality productive force of agriculture, including progressiveness, low-carbon, efficient, diversified, innovative, integrated, shared, and high-end. Developing new quality productive force of agriculture has important theoretical and practical significance. Firstly, it is conducive to increasing agricultural output and maintaining food security. Secondly, it would promote the increase of farmerś income and the prosperity of rural economy. Thirdly, it helps improve agricultural efficiency and build a strong agricultural country. Fourthly, it could advance the ecological environment and build a beautiful China. Fifthly, it would help lead the development of world agriculture and promote the construction of a community with a shared future for mankind. The main pathways for cultivating and developing the new quality productive force of agriculture include: strengthening scientific and technological innovation, collecting 'high-quality' data, developing new types of machinery and tools, developing new quality industries, optimizing the ecological environment, cultivating new quality talents, and establishing a new system.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 4","pages":"1281-1288"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144081066","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}