As a tropical island confronting the dual imperatives of tourism-driven economic growth and ecological vulnerability,Hainan's land-use sustainability critically impacts both regional development and coastal ecosys...As a tropical island confronting the dual imperatives of tourism-driven economic growth and ecological vulnerability,Hainan's land-use sustainability critically impacts both regional development and coastal ecosystem security.This study employs a coupled PLUS-InVEST modeling framework to analyze land-use changes and habitat quality dynamics from 2000 to 2020,projecting ecological outcomes under three development scenarios for 2030.Key findings reveal:(1)A persistent bimodal habitat distribution pattern,with high-quality areas concentrated in the central forest zone and degraded areas in coastal peripheries,exhibiting a continuous decline over the 20-year period.(2)Accelerated urbanization between 2010 and 2020 resulted in the conversion of ecological land to construction use,correlating strongly with habitat fragmentation intensity.(3)Baseline projections for 2030 indicate that construction land will dominate new conversions.(4)Ecological protection scenarios demonstrate recoverable habitat potentials,particularly within coastal buffer zones.These findings provide empirical validation of scenario-driven land-use planning as a viable tool for island ecosystems,highlighting the critical need to balance tourism infrastructure development with coastal conservation imperatives in tropical island sustainability management.This methodology advances spatial decision-making for balancing island economic growth with biodiversity preservation,offering replicable strategies for global island ecosystems facing similar sustainability challenges.展开更多
为研究不同比例明胶/马铃薯淀粉对大豆分离蛋白(soybean protein isolate,SPI)凝胶性能及3D打印性能的影响,该文以SPI、明胶和马铃薯淀粉为原料,通过热诱导的方式制备SPI复合凝胶,并对复合凝胶的水分分布、质构、流变特性、结构、微观...为研究不同比例明胶/马铃薯淀粉对大豆分离蛋白(soybean protein isolate,SPI)凝胶性能及3D打印性能的影响,该文以SPI、明胶和马铃薯淀粉为原料,通过热诱导的方式制备SPI复合凝胶,并对复合凝胶的水分分布、质构、流变特性、结构、微观结构以及3D打印特性等进行了表征。结果表明,明胶与马铃薯淀粉比例在1∶8~6∶8(质量比,下同)范围内,随着比例增加,自由水比例降低,不易流动水比例升高,明胶与马铃薯淀粉比例为6∶8时,不易流动水比例最高,占比为2.48%。复配凝胶的硬度、内聚性和咀嚼性随着明胶与马铃薯淀粉比例的增加逐渐降低,6∶8时达到最低,质地最为柔软。随着剪切速率升高,凝胶的黏度均下降,样品的G′和G″随着明胶与马铃薯淀粉比例的增加也均呈升高趋势。傅里叶红外光谱结果显示,添加了明胶和马铃薯淀粉的样品在波长3295.44 cm-1处的—OH振动发生红移,氢键作用增强。随着明胶与马铃薯淀粉比例的增加,复配凝胶孔径逐渐减小,明胶与马铃薯淀粉比例为6∶8时,凝胶孔隙分布呈现出最高的均匀性,打印精度最好,高度打印精确度99.60%,直径打印精确度99.92%,且在1 h内未出现明显塌陷。综上所述,明胶/马铃薯淀粉比例为6∶8时,对大豆分离蛋白凝胶3D打印性能的改善最为显著,这为开发蛋白基3D打印油墨提供理论依据。展开更多
基金National Science and Technology Basic Resources Investigation Program(2022FY101901-2)。
文摘As a tropical island confronting the dual imperatives of tourism-driven economic growth and ecological vulnerability,Hainan's land-use sustainability critically impacts both regional development and coastal ecosystem security.This study employs a coupled PLUS-InVEST modeling framework to analyze land-use changes and habitat quality dynamics from 2000 to 2020,projecting ecological outcomes under three development scenarios for 2030.Key findings reveal:(1)A persistent bimodal habitat distribution pattern,with high-quality areas concentrated in the central forest zone and degraded areas in coastal peripheries,exhibiting a continuous decline over the 20-year period.(2)Accelerated urbanization between 2010 and 2020 resulted in the conversion of ecological land to construction use,correlating strongly with habitat fragmentation intensity.(3)Baseline projections for 2030 indicate that construction land will dominate new conversions.(4)Ecological protection scenarios demonstrate recoverable habitat potentials,particularly within coastal buffer zones.These findings provide empirical validation of scenario-driven land-use planning as a viable tool for island ecosystems,highlighting the critical need to balance tourism infrastructure development with coastal conservation imperatives in tropical island sustainability management.This methodology advances spatial decision-making for balancing island economic growth with biodiversity preservation,offering replicable strategies for global island ecosystems facing similar sustainability challenges.
文摘为研究不同比例明胶/马铃薯淀粉对大豆分离蛋白(soybean protein isolate,SPI)凝胶性能及3D打印性能的影响,该文以SPI、明胶和马铃薯淀粉为原料,通过热诱导的方式制备SPI复合凝胶,并对复合凝胶的水分分布、质构、流变特性、结构、微观结构以及3D打印特性等进行了表征。结果表明,明胶与马铃薯淀粉比例在1∶8~6∶8(质量比,下同)范围内,随着比例增加,自由水比例降低,不易流动水比例升高,明胶与马铃薯淀粉比例为6∶8时,不易流动水比例最高,占比为2.48%。复配凝胶的硬度、内聚性和咀嚼性随着明胶与马铃薯淀粉比例的增加逐渐降低,6∶8时达到最低,质地最为柔软。随着剪切速率升高,凝胶的黏度均下降,样品的G′和G″随着明胶与马铃薯淀粉比例的增加也均呈升高趋势。傅里叶红外光谱结果显示,添加了明胶和马铃薯淀粉的样品在波长3295.44 cm-1处的—OH振动发生红移,氢键作用增强。随着明胶与马铃薯淀粉比例的增加,复配凝胶孔径逐渐减小,明胶与马铃薯淀粉比例为6∶8时,凝胶孔隙分布呈现出最高的均匀性,打印精度最好,高度打印精确度99.60%,直径打印精确度99.92%,且在1 h内未出现明显塌陷。综上所述,明胶/马铃薯淀粉比例为6∶8时,对大豆分离蛋白凝胶3D打印性能的改善最为显著,这为开发蛋白基3D打印油墨提供理论依据。
