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遥感技术在风景林景观质量评价中的应用研究进展 总被引:1,自引:0,他引:1
遥感技术是风景林景观质量评价的重要手段。概述风景林景观质量评价的意义及发展历程,总结遥感技术在风景林景观格局及动态研究、可视化和数字化管理中的应用,重点阐述基于遥感技术的风景林景观质量内涵,分析目前遥感技术在风景林景观信息提取及评价方面理论和方法上存在的问题,并对遥感技术在风景林景观质量评价中的应用前景进行展望。 相似文献
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厦门市风景林春季植物景观质量评价初探 总被引:1,自引:0,他引:1
以厦门风景林春季植物景观为研究对象,收集65张近景植物图片和相关资料,采用大众评判法获得美景度,运用多元数量化模型Ⅰ,依据美景度与景观要素的关系建立观花类与非观花类评价模型,实现厦门市风景林景观质量的评价。结果表明:影响春景观花模型的主要因子顺序是绿色比>非景观影响因子>灰度比>色彩布局>林冠层变化,各因子的偏相关系数均在0.88以上,复相关系数达0.97;影响春景非观花模型的主要因子顺序是绿色比>林冠面特征>非景观影响因子>生活型特征,偏相关系数均在0.87以上,复相关系数达0.99。 相似文献
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2018年本溪市选取了6个典型村庄进行了环境质量监测和评价,结果表明:本溪市典型村庄环境空气质量状况较好;饮用水源地水质较差,主要超标指标为总大肠菌群;县域地表水环境质量较好;土壤中镉略高于风险筛选值,可能存在农用地土壤污染风险,为此,应加强土壤环境监测和农产品协同监测。 相似文献
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对本溪县森林资源现状进行了分析。结果表明,防护林和用材林在各林分面积中占有较大比重,但是林地总量不足、质量一般,幼、中林面积所占比重大而成熟林占比重小,龄级结构不尽合理。提出了相应的森林资源管理对策和建议。 相似文献
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城市生态风景林——中山陵景区异龄复层景观林抑菌功能研究 总被引:3,自引:0,他引:3
对中山陵景区异龄复层混交景观林抑菌功能研究结果表明,供试复层林群落均有较好的抑菌效果.与对照相比,上午9:30~10:00空气中细菌菌落数(简称含菌量)减少1 428~9 331 cfu/m3.生长期内4~9月,抑菌率达52.37%~95.62%,抑菌效果以秃杉 松阔、阔瓣含笑 杂阔、乳源木莲 杂阔、香樟 杂阔、香樟 松阔、深山含笑 杂阔、乐昌含笑 杂阔群落较好.苦槠 杂阔、青冈 杂阔群落也有一定的抑菌功能.而桂花 松树(马尾松)、桂花 杂阔等群落抑菌功能则较低.抗菌活性测定结果表明,阔瓣含笑、乳源木莲、深山含笑、乐昌含笑、香樟,以及金叶含笑叶挥发油对空气中革兰氏阳性细菌--金黄色葡萄球菌有较强抗菌活性.同时对供试群落抑菌功能的日变化、季节变化也作了测定分析. 相似文献
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中山陵景区异龄复层混交林群落抑菌功能测定 总被引:3,自引:0,他引:3
在南京中山陵景区对构建的9种异龄复层混交林群落抑菌功能测定表明,不同混交林群落都有明显的抑菌作用。上午10:00时,含有秃杉、香樟和阔瓣含笑的混交林抑菌率达到80%以上;9种不同混交林空气中细菌菌落数减少1 328~1 817个/m3,抑菌率为64.4%~88.3%。下午15:00时,含有阔瓣含笑、乳源木莲、香樟、深山含笑和秃杉的混交林抑菌率也达到80%以上;9种不同混交林空气菌落数减少1 398~1 975个/m3,抑菌率达65.5%~92.7%。 相似文献
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IntroductionKoreanpine(PinuskOraiensisSieb.etZucc.)isoneofthemostimportanttimberspeciesanditisnaturaIIydistributedinHeilongjiang,JiIinandLiaon-ingprovincesinChina.ManyforestryresearchersmadeextensiveandprofoundstudiesonthisspeciesJiangYiyin(1985)studiedthegroWthandgrowthmodelsforpIantationsofKoreanpine.However,veryfewpaperswerefoundonthegroWthmodeIsofnaturalKoreanpineforest.Koreanpinehasa1onggroWthperiod.ForextensivelymanagingKoreanpineforest,itneedstheJorestrytabIeswithhighac-Curacy… 相似文献
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Pablo Vásquez Gassibe Raul Fraile Fabero María Hernández-Rodríguez Juan Andrés Oria-de-Rueda Felipe Bravo Oviedo Pablo Martín-Pinto 《Journal of Forest Research》2014,19(3):348-356
This study was aimed at describing post-fire mushroom production in a Mediterranean ecosystem dominated by Pinus pinaster Ait. in the northwest of Spain and assessing the results by classificatory models. During the autumn periods of 2003–2006, fruit bodies from 115 fungal taxa were collected in burned and unburned areas and were further grouped into the following categories: saprotrophic/mycorrhizal; and edible/non-edible. After wildfires, a significant reduction in the number of fungal species and fruit body biomass production was observed. Based on this relevant information, the first simple classificatory model for this aim is provided. Nine alternative models based on classifications according to combinations of edibility and functional groups were fitted, and four fruiting body biomass production classes were defined as possible responses. As explanatory factors, time after fire and climatic variables significantly related to fruit body production were included. The best predictive results were obtained for edible and edible-mycorrhizal models, for which the correct classification rate of production classes was between 92 and 85 %. Moreover, the models obtained were applied to analyse the effect of time after fire on fungal production. Mycorrhizal and edible fungal production after fire was classified into the lowest class, whereas saprotrophic and non-edible species followed a contrary trend. The classificatory models can be useful to optimise management and harvest of these increasingly appreciated non-timber forest resources. 相似文献