应用生态学报最新文献

{"title":"[Repellency of volatiles from bracts of banana flower bud to <i>Frankliniella occidentalis</i>].","authors":"Chen-Cheng Feng, Xun-Dong Li, Jia Mao, Sheng-Tao Xu, Ti-Yuan Xia, Hui Ling, Li-Na Liu, Ke-Suo Yin","doi":"10.13287/j.1001-9332.202504.033","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202504.033","url":null,"abstract":"<p><p><i>Frankliniella occidentalis</i> infested a wide range of crops. However, no <i>F. occidentalis</i> was found on banana flower bud. To investigate the effect of volatile of banana bud on the behavior of <i>F. occidentalis</i>, we utilized Y-tube olfactometer to assess the behavioral responses of <i>F. occidentalis</i> to different tissues of banana flower buds. We further analyzed the volatile of bracts of flower bud by gas chromatography-mass spectrometry (GC-MS), to select and test the relatively high abundant compound. We determined their behavioral effect on <i>F. occidentalis</i> by conducting an activity experiment in rose garden. The results showed that flower stamen and pistil, as well as young fruit had an attractive effect on <i>F. occidentalis</i>, with relative selection rates of 37.3% and 35.8% respectively. The bracts exhibited a strong repellent effect, with a relative selection rate of -68.6%. Among the 35 volatile compounds detected from the bracts, eight compounds had a relative content more than 1%, accounting for 61.6% of the total. They were α-pinene (16.8%), β-pinene (14.6%), D-limonene (7.9%), DL-limonene (7.9%), ocimene (6.4%), β-caryophyllene (4.8%), 1,8-cineole (4.1%), and γ-terpinene (1.0%). The α-pinene, D-limonene, and β-caryophyllene had significantly repellent effect on <i>F. occidentalis</i>. The relative selection rates were -52.0% and -35.8% at 10.0 μg·mL^-1 and 1.0 μg·mL^-1 for α-pinene, were -43.4% at 1.0 μg·mL^-1 for β-pinene, were -34.6% at 10.0 μg·mL^-1 for D-limonene, were -56.9% at 1.0 μg·mL^-1 and -28.3% at 0.1 μg·mL^-1 for DL-limonene, were -32.1% at 10.0 μg·mL^-1 and -33.3% at 1.0 μg·mL^-1 for β-caryophyllene, respectively. Results of the outdoor trial showed that the five tested compounds exhibited significantly repellent effects on <i>F. occidentalis</i>. The relative selection rates were -51.6% for α-pinene at 10.0 μg·mL^-1 and the lowest were -22.8% for β-caryophyllene at 1.0 μg·mL^-1. In conclusion, the bracts of banana flower buds were the key important tissue to repellent <i>F. occidentalis</i>, with α-pinene, β-pinene, D-limonene, DL-limonene, and β-caryophyllene as the core compounds.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 4","pages":"1244-1250"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144081089","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":"[Characteristics of soil organic carbon components across a chronosequence of <i>Cryptomeria japonica</i> plantations in Rainy Area of Western China].","authors":"Yue-Han Wang, Rui Wang, Yu Li, Cheng-Ming You, Lin Xu, Hong-Wei Xu, Bo Tan, Zhen-Feng Xu","doi":"10.13287/j.1001-9332.202504.013","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202504.013","url":null,"abstract":"<p><p>Soil organic carbon (SOC) components are crucial indicators of soil fertility and carbon sequestration capacity, playing a pivotal role in maintaining global carbon balance. However, the dynamics of SOC components across plantations with different stand ages remain poorly understood. In this study, we collected soil samples (0-15 cm and 15-30 cm) from 7, 13, 24, 33 and 53 years stands of <i>Cryptomeria japonica</i> plantations in the Rainy Area of Western China to quantify the contents of different SOC components, including particulate organic carbon (POC), easily oxidized organic carbon (EOC), light fraction organic carbon (LFOC), heavy fraction organic carbon (HFOC), labile organic carbon (LOC), and inert organic carbon (IOC). The results showed that: 1) POC content increased continuously with stand age, while contents of LOC, EOC, LFOC, HFOC, and IOC followed unimodal patterns, peaking at 24- and 33-year-old stands. 2) All SOC components were significantly higher in surface layer (0-15 cm) than subsurface layer (15-30 cm). The differences in POC and LFOC between two soil layers increased with stand ages, while EOC and LOC exhibited maximal inter-layer differences at 24 and 33 years, respectively. 3) Results of variance partitioning analysis showed that microbial variables (fungal and bacterial biomass, and enzyme activities) exerted stronger explanatory power on POC variation than soil physicochemical pro-perties. Other SOC components were co-regulated by both biological and physiochemical factors. Partial least squares path modeling further demonstrated that stand age directly influenced POC and indirectly modulated all SOC components by mediating soil physicochemical and microbial characteristics. In all, our findings suggested that there were distinct age-dependent patterns in SOC components in <i>C. japonica</i> plantation and their vertical stratification were driven by stand age-associated changes in soil microbial and physiochemical properties. This study would be helpful for understanding soil carbon sequestration along plantation development, and could offer scientific basis for enhancing carbon sink functions in <i>C. japonica</i> plantation.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 4","pages":"1024-1034"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144081117","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 meteorological, soil, and hydrological drought propagation at different levels in Inner Mongolia, China].","authors":"Meng-Meng Zhang, En-Liang Guo, Yong-Fang Wang, Yao Kang, Jia-Pei Zhao, Ji-Si-Gu-Leng Wu, Xiao Luo","doi":"10.13287/j.1001-9332.202504.027","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202504.027","url":null,"abstract":"<p><p>Understanding the meteorological-soil-hydrological drought propagation characteristics can provide technical supports for the formulation of drought mitigation measures. Taking Inner Mongolia as the research area, we utilized the ERA5-Land soil moisture and surface runoff dataset from the European Centre for Medium-Range Weather Forecasts from 1980 to 2022, coupled with observation data from 115 meteorological stations, to calculate standardized precipitation evapotranspiration index (SPEI), standardized soil moisture index (SSI), and standar-dized runoff index (SRI) at different temporal scales. Then, we used run theory, Theil-Sen median trend analysis, the Mann-Kendall test, and Pearson correlation analysis to investigate the lag effects across different types of droughts and the spatiotemporal distribution of propagation time. The results showed that over 85% of the region showed an intensifying trend for meteorological, soil, and hydrological droughts, with areas showing significant wetting covering less than 1% of the study area. Meteorological drought events were characterized by high frequency, low severity, and short duration, whereas soil drought events exhibited low frequency, high severity, and long duration. Hydrological droughts were dominated by high frequency, low severity, and short-duration events. The response between soil and hydrological drought was stronger than that between meteorological and hydrological drought, implicating that soil moisture deficit induced by soil drought was the primary trigger for hydrological drought. The propagation time for various levels of droughts was predominantly concentrated between two to six months, with higher-grade drought events showing more efficient transition and propagation. The continuity of meteo-rological, soil, and hydrological drought events in central and western Inner Mongolia and soil-hydrological drought events in eastern Inner Mongolia were relatively weak. This research would be of great significance in revealing the mechanisms of regional drought formation and constructing drought propagation models.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 4","pages":"1197-1210"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144081002","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":"[Construction of biomass models for understory shrubs and tree saplings in Fenglin County, Heilongjiang Province, China.]","authors":"Ze-Lin Li, Wei-Wei Jia, Yang Zhao, Shan Jiang","doi":"10.13287/j.1001-9332.202504.004","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202504.004","url":null,"abstract":"<p><p>Shrubs and tree saplings are important components of understory in natural forests, possessing rich species diversity and broad ecological adaptability. They play a key role in soil moisture retention, water conservation, and wind and sand prevention. However, current research has mostly focused on the interactions between the tree layer and understory, with less attention on the growth dynamics, biomass renewal, and environmental adaptability of understory. Based on data of 18 shrub species and sapling of six tree species from the understory of Fenglin County in Heilongjiang Province, along with climate data from the sampling sites, we introduced two dummy variables, stand density and age class, to construct a biomass model for understory shrubs and tree saplings. The results showed that incorporating climate factors (mean annual temperature and mean annual precipitation) into the base model to construct a climate-sensitive biomass model significantly improved the model's fitting accuracy. The coefficient of determination (<i>R</i>²) increased from 0.732 in the base model to 0.741, with an improvement of 6.8%. Based on the climate-sensitive biomass model, single dummy variables for age class and a dual dummy variable model combining stand density and age class were introduced. The dual dummy variable model showed the best fit, with an <i>R</i>² of 0.840, being significantly higher than the single dummy variable model (<i>R</i>²=0.787) and the climate-sensitive biomass model (<i>R</i>²=0.741). The model constructed based on the climate-sensitive biomass model and incorporating dual dummy variables for stand density and age class, could effectively reflect the biomass variations of shrubs and tree saplings under different age classes and stand densities. It would provide a basis for forest ecological management and the scientific estimation of biomass, with significant practical value.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 4","pages":"1053-1061"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144081041","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 adding basalt powder on organic carbon sequestration in red and yellow-brown soils under earthworm inoculation].","authors":"Ya-Lin Teng, Wei-Ming Li, Dong-Sheng Wang, Xi-Huan Liang, Jin Chen, Cheng-Long Ye, Man-Qiang Liu, Shui-Jin Hu","doi":"10.13287/j.1001-9332.202504.020","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202504.020","url":null,"abstract":"<p><p>The enhanced weathering technology of basalt can promote the fixation of atmospheric carbon dioxide in the form of carbonates/bicarbonates in soils. Earthworms can promote mineral weathering, further contributing to carbon fixation. In this study, we selected red and yellow-brown soil as research subjects and set up three treatments [<i>i.e</i>., control (CK), adding basalt powder (B), and adding basalt powder and inoculating earthworms simu-ltaneously (BE)], and explored the impact and potential mechanisms of earthworm-mediated basalt weathering on <i>Amaranthus tricolor</i> growth, soil respiration, microbial abundance, Ca² and Mg²⁺, soil total organic C, inorganic C and mineral-bound organic C in the field. The results showed that B and BE treatments significantly increased soil pH and Mg²⁺ content of both soils, but significantly increased Ca²⁺ content, soil respiration, aboveground and belowground biomass of <i>A. tricolor</i> only in the red soil. B and BE treatments significantly reduced reactive Fe and Al minerals in both soils and NH₄⁺-N content of the yellow-brown soil, but did not affect NO₃^--N content of both soils. BE treatment significantly increased bacterial abundance of the red soil, but did not affect fungal abundance of both soils. BE treatment significantly increased inorganic C content only in the yellow-brown soil, but significantly reduced Fe/Al bound organic C of the yellow-brown soil, and had no significant effect on total C and organic C of both soils. In addition, BE treatment had no significant effect on soil organic C, inorganic C and Fe/Al bound organic C of both soils compared with B treatment. The random forest model analysis revealed that fungal abundance is the key factor regulating organic carbon accumulation in red soils, while active aluminum minerals and iron-aluminum minerals are respectively identified as the critical determinants controlling the accumulation of organic carbon and iron-aluminum bound organic carbon in yellow-brown soils. Our results indicate that adding basalt powder to soil can significantly promote plant growth in the short term, but did not affect soil organic C formation. The role of earthworms in promoting basalt weathering and soil organic C sequestration in the short term is limited.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 4","pages":"1003-1012"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144081048","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":"[Composition and spatiotemporal variation of macroalgae in large-scale raft culture area of Gouqi Island, Zhejiang, China].","authors":"Jing-Jing Li, Zhen-Hua Wang, Shou-Yu Zhang, Jun Lin, Kai Wang, Xu Zhao","doi":"10.13287/j.1001-9332.202504.031","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202504.031","url":null,"abstract":"<p><p>To comprehensively understand the impacts of large-scale raft culture activities on the diversity and biomass of macroalgae, we collected samples monthly from July 2021 to June 2022 in the Gouqi Island mussel farming area (raft culture area) and the natural rocky intertidal zone (control area). By using indices such as Shannon diversity, Margalef richness, Pielou evenness and relative importance index, as well as redundancy analysis, we compared the responses of alpha diversity, growth cycle, biomass spatiotemporal patterns of macroalgae to environmental factors in both raft culture area and control area. The results showed that a total of 61 macroalgae species were collected in the raft culture area, belonging to 13 orders, 25 families, and 31 genera. There were 24 dominant macroalgae species annually, among which <i>Jania decussato-ichotoma</i>, <i>Pachymenia carnosa</i>, and <i>Chaetomorpha aerea</i> dominated in most of months. 47 species of macroalgae, belonging to 31 genera and 24 families in 13 orders, were collected in control area. There were 13 dominant species, but only <i>Sargasum thunbergii</i> dominated throughout the year. The vigorous growth period of macroalgae represented by <i>Hypnea cervicis</i>, <i>Hypnea boergesenii</i>, <i>P. carnosa</i>, <i>Grateloupia</i> sp., <i>J. decussato-dichotoma,</i> <i>Ulva lactuca</i>, <i>Ulva fasciata</i> and <i>Sargasum horneri</i> in raft culture area significantly increased. Shannon index and Margalef index of macroalgae in raft culture area (2.36±0.25 and 1.45±0.23, respectively) were higher than those in control area (1.85±0.32 and 0.96±0.39, respectively). The macroalgae biomass in raft culture area exhibited a notable monthly variation, with a mean biomass of (10374.53±4688.17) g·m^-2, which was considerably higher than that in the control area (3090.40±2230.33 g·m^-2). In terms of spatial distribution, the mean monthly biomass was higher in nearshore region of raft culture area (11466.12±227.65 g·m^-2) than that to the outer region (10498.29±1266.77 g·m^-2) and the middle region (9229.95±252.75 g·m^-2). The redundancy analysis indicated that transparency, salinity, dissolved oxygen, water temperature, turbidity, and ammonium nitrogen were significantly correlated to community structure. Those results indicated that large-scale raft culture area supported both higher diversity and biomass of macroalgae than intertidal zones. Meanwhile, dominant macroalgae such as <i>J. decussato-ichotoma</i>, <i>P. carnosa</i> and <i>S. horneri</i> presented extended periods of vigorous growth in artificial habitat. The conclusions could be taken into consideration on construction of raft macroalgal bed in marine ranching programs.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 4","pages":"1261-1271"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144081060","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 stand density on understory vegetation and soil properties in <i>Populus simonii</i> plantations].","authors":"Xian Huang, Xin-Xiao Yu, Guo-Dong Jia, Xiao-Min Chang, Li-Bo Sun","doi":"10.13287/j.1001-9332.202504.001","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202504.001","url":null,"abstract":"<p><p>We investigated the understory vegetation, determined the physicochemical properties at 0-20 and 20-40 cm soil layers in 28-year-old <i>Populus simonii</i> plantations under different stand densities (450, 600, 750, 950, 1100 trees·hm^-2) in Zhangbei County, Zhangjiakou City, Hebei Province, aiming to understand the effects of stand density on species diversity of understory plants and soil physicochemical properties. The results showed that there were almost no shrubs in the understory. A total of 38 species, 30 genera, 18 families of herbaceous plants were observed in the understory vegetation. The dominate herbaceous plants were from the Cyperaceae, Fabaceae, Gramineae, Brassicaceae, and Compositae. When the stand density of <i>P. simonii</i> increased, Margalef richness index (<i>D</i>_M), Simpson dominance index (<i>D</i>_S), Shannon diversity index (<i>H</i>), and Pielou evenness index (<i>E</i>) of the herbaceous plant communities rose first but then declined, and peaked at the stand density of 600 trees·hm^-2. The overall trend of soil nutrients in the two soil layers increased first and then decreased with increasing stand density, and the maximum value all appeared at 600 trees·hm^-2. The contents of soil total nitrogen, total phosphorus, alkali-hydrolyzable nitrogen, available phosphorus, and available potassium positively correlated with understory herbaceous species diversity index. In the 0-20 cm soil layer, soil total nitrogen and available phosphorus contents were significantly positively correlated with <i>D</i>_M, <i>D</i>_S, <i>H</i> and <i>E</i>. Soil total phosphorus content had significant positive correlation with <i>D</i>_S and <i>H</i>. There was a significant positive correlation between alkali-hydrolyzable nitrogen and <i>D</i>_S. In the 20-40 cm soil layer, soil bulk density had a significant negative correlation with <i>D</i>_M, <i>D</i>_S, <i>H</i>, and <i>E</i>. Soil total phosphorus content had a significant positive correlation with <i>D</i>_M, <i>D</i>_S, <i>H</i>, and <i>E</i>. There was a significant positive correlation between soil available potassium and <i>D</i>_M and <i>H</i>. The stand density of 600 trees·hm^-2 was the optimal one for <i>P. simonii</i> plantations in this region, which could improve understory herbaceous species diversity, provide good growth space for understory vegetation, and enhance soil fertility.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 4","pages":"1035-1042"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144080306","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":"[Spatial distribution and influencing factors of soil dissolved organic carbon in Dongting Lake Basin].","authors":"Kang-Ning Duan, Jin-Quan Huang, Ji-Gen Liu, Yun Kong, Xiao-Lan Liu, Wei-Wen Li, Lu Zhang","doi":"10.13287/j.1001-9332.202504.012","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202504.012","url":null,"abstract":"<p><p>Soil dissolved organic carbon (DOC) is a crucial component of terrestrial carbon pool, and its spatial distribution characteristics are of significant importance for the regulation of regional carbon sequestration and the enhancement of carbon sink. Taking the Dongting Lake Basin as the research area, by utilizing geostatistics, correlation analysis, and GIS technology, we analyzed the spatial distribution of topsoil (0-10 cm) DOC and its correlation with environmental variables, including land use types, soil physicochemical properties, and topography. The results showed that: 1) Soil DOC content in the Dongting Lake Basin ranged from 4.31 to 271.29 mg·kg^-1, with an average value of 78.46 mg·kg^-1 and a coefficient of variation of 52.1%, indicating a moderate level of variability. 2) Soil DOC generally exhibited a patchy distribution with a decreasing trend from south to north, showing a moderate spatial autocorrelation with higher variability in the 45°, 90°, and 135° directions due to the joint influences of structural and random factors. 3) Land use patterns, rainfall, slope, soil organic carbon, total nitrogen, and cation exchange capacity were significantly correlated with DOC. Soil physicochemical properties and land use patterns were the main controlling factors affecting the spatial differentiation of soil DOC, with explanation rates of 23.7% and 22.8%, respectively. Our findings would provide a scientific basis for soil carbon sink management and carbon cycle balance in the Dongting Lake Basin.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 4","pages":"1171-1178"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144081100","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":"[Spatiotemporal variation and future scenario simulation of ecosystem carbon storage in the Hulun Lake Basin, Inner Mongolia, China].","authors":"Qi Wang, Nan Shan, Nan-Nan Li, Zhao-Yong Zhang, Quan Li, Rui Diao, Wen-Lin Wang, Yu-Bing Qu","doi":"10.13287/j.1001-9332.202504.024","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202504.024","url":null,"abstract":"<p><p>Carbon storage in terrestrial ecosystems plays a crucial role in climate change and the global carbon cycle. To investigate the spatiotemporal variations of carbon storage in the Hulun Lake Basin, we combined the InVEST and PLUS models to systematically analyze the impacts of land use changes from 1990 to 2020 on carbon storage, and simulate land use patterns and spatial distribution of carbon storage under different scenarios for 2030. The results indicated that the Hulun Lake Basin experienced significant changes in land use distribution during 1990-2020. The area of cultivated land, forest, bare land, and built-up land increased, while the area of grassland, water, and wetlands decreased. Total carbon storage in the basin increased by 1.48×10⁷ t, with a growth rate of 1.0%. Carbon storage in forest and cultivated land increased by 7.18×10⁷ and 6.7×10⁶ t, while that in grassland, water, and wetlands decreased by 6.01×10⁷, 1.8×10⁶, and 1.7×10⁶ t, respectively. Carbon storage in the basin exhibited significant spatial heterogeneity, with higher carbon storage areas mainly distributed in the eastern hilly areas of the basin and lower carbon storage areas mainly located in the northeastern part of the basin and around Hulun Lake. The spatial differentiation showed a strong coupling relationship with land use patterns. Under the four scenarios for 2030, including natural development, urban development, cropland protection, and ecological conservation,carbon storage in the Hulun Lake Basin showed an increasing trend, with the ecological conservation scena-rio demonstrating the most significant growth of 6.19×10⁶ t and a growth rate of 0.4%. Our findings would provide important references for optimizing land use pattern and enhancing carbon storage capacity in the Hulun Lake Basin.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 4","pages":"1159-1170"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144081103","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":"[Applicability and application of multiple drought indices to water deficit of staple crops in China].","authors":"Xiao-Rui Shi, Xu Hong, Wen-Bin Zhu","doi":"10.13287/j.1001-9332.202504.023","DOIUrl":"https://doi.org/10.13287/j.1001-9332.202504.023","url":null,"abstract":"<p><p>In the context of global climate change, the increasing frequency, scale, and intensity of droughts severely threaten food security of China. We established two drought indices (crop evapotranspiration-effective preci-pitation index (CEEP) and water deficit index (WDI)) based on meteorological parameters and crop growth-related data during growing season. The performance of those two indices was compared with that of four widely used ones, <i>i.e.</i>, percentage of precipitation anomaly (PA), moisture index (MI), standardized precipitation index (SPI), and standardized precipitation evapotranspiration index (SPEI). We further used the six indices to analyze the characteristics of typical drought events in the winter wheat region of North China and the spring maize region of Northeast China, as well as the spatiotemporal variations of droughts from 1979 to 2018. The results showed that CEEP and WDI effectively captured crop water scarcity and drought characteristics, and WDI was identified as the optimal drought index in more than one-third of provinces, mainly concentrated in Northeast and North China. In terms of temporal variation, based on the WDI, there was no significant trend of drought events in the winter wheat region in North China and the spring maize region in Northeast China. In terms of spatial variation, the performance of the drought indices differed. In the winter wheat zone of North China, PA, MI, and SPI detected more wetting characteristics, while SPEI, CEEP, and WDI detected more drying characteristics. In the spring maize zone of Northeast China, the indices performed more consistency, with wetting trends observed in Suihua, Daqing, and Hegang while drying trends in western part of Jilin and Liaoning, southern Liaoning, western Heilongjiang, and southern Sanjiang Plain. WDI was suitable for crop water deficit analysis in Northeast and North China and could accurately reflect the spatial distribution of drying or wetting trends, which would provide support for water resource management and decision-making in agricultural production.</p>","PeriodicalId":35942,"journal":{"name":"应用生态学报","volume":"36 4","pages":"1135-1146"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144081107","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}