Sacred sites as habitats of culturally important plant species in an Indian megacity     

《Urban Forestry & Urban Greening》2018

Cultural ecosystem services related to urban green spaces contribute significantly to liveable cities. While previous studies highlight the intersection of cultural ecosystem services with societal values, spiritual or religious values associated with urban nature have received less attention. In India, as in other parts of the world, sacred sites are known for their biological richness, but analyses from urban sacred sites are largely missing. Based on a stratified random sampling approach, we analysed the cultivated and wild plant species assemblages of 69 sacred sites in the megacity of Bengaluru, India, in relation to biological and cultural features, and parameters related to the urban matrix and type of sacred sites (temple vs. katte). Unlike other urban studies, we found a dominance of native species in the cultivated and spontaneous species pools (121 species in total), with Ficus religiosa and Azadirachta indica as most frequently planted species. Culturally relevant species prevailed in the species pool (89%), with overlaps between religious (36%), medicinal (50%) and ornamental (62%) plants; only 11% of species were weeds. Urban matrix parameters (age of development, housing density) and size and type of sacred sites were related to differences in species assemblages. We identified key species for different classes of age and housing density, and for types of sacred sites. Our study demonstrates that urban sacred sites have an important potential in harbouring both native and culturally significant species that can support urban livelihoods in developing countries by a range of cultural and provisioning ecosystem services, including medicinal uses. As such sites are conserved by communities for spiritual or cultural beliefs, local biodiversity can be enhanced, e.g. by adapting management practices through community participation. This would strengthen the important contribution of sacred sites within the green infrastructure of rapidly growing megacities.  相似文献   

植物来源药物联合抗肿瘤的研究进展     

吴玉珊  张秀珍 《安徽农业科学》2017,45(9)

主要对长春碱、小檗碱、喜树碱和苦参碱等生物碱类、紫杉醇类药物联合抗肿瘤治疗进行了综述,并指出植物来源药物联合抗肿瘤的发展方向。  相似文献   

人工培植羊体羊黄的研究     

谢仲权  丁明星  孙家发  王惠川  张永红  谢富强  张合 《北京农学院学报》1993,(2)

本试验以外科手术方法在北京农户所养绵羊胆囊内放人异物网核和注入致黄菌(SEBF8,50亿/ml),诱发羊黄,均获成功.其间,对术前术后血清胆红质、胆固醇、谷草转氨酶和GROS反应等项进行测定.结果表明:上述各项指标在术后8天内与术前比,均有降低,差异显著,但以后逐渐恢复正常.而体重、临床表现,以及饲养指标本出现异常.预示着,人工培植羊体羊黄可行.同时,本试验还为进一步提高人工培植羊黄的产黄量,提供了参考数据.  相似文献   

系统耦合与荒漠─绿洲草地农业系统─—以祁连山一临泽剖面为例   总被引：7，自引：0，他引：7  

任继周  万长贵 《草业学报》1994,(3)

生态系统内部自由能的积累，使系统失去平衡并趋于同其它生态系统结合，自由能驱使两个或两个以上的生态系统或亚生态系统，通过会聚，超循环和耦合而联合，从而形成具有特殊结构一功能的更高一级的新系统。系统耦合可以多途径解放生态系统中的自由能而增加农业生态系统的生产力，亦即从催化潜势，位差潜势，多稳定潜势及管理潜势中取得能输出。上述过程可作用于农业系统中的四个子系统，这四个子系统各有自己的产品：前植物生产，植物生产，动物生产，外生物生产，从而大幅度提高其生产力。在荒漠─绿洲草地农业生态系统中，本文分别计量了各个子系统的能流单位及其流程，证明它的子系统也可以成功的发生系统耦合，其中绿洲子系统应居关键地位。  相似文献   

大豆叶面积变化对田间微气象条件及产量的影响   总被引：3，自引：0，他引：3  

潘万清  高连国 《大豆科学》1992,11(1):83-87

作者通过1977～1981年和1987～1989年,分别在绥化、哈尔滨和合江地区的田间试验和生产调查,发现大豆叶面积指数的大小可造成不同的田间微气象环境条件,叶面积指数6左右时,植株似倒非倒,株间采光量和CO_2分布较为合理,光合效率高,大豆单株生育良好,群体产量高;在生产上可依据当地土地条件、施肥水平、不同品种和不同种植方式用叶面积动态变化方程式计算出适宜的密度,以使大豆群体最大叶面积指数保持在6左右,创造较理想的田间微气象效应。  相似文献   

景观植物信息查询系统(LPIIS)的构建     

韩成峰  张志国 《山东林业科技》2004,(2):41-44

近年来，我国的景观植物产业得到了很大发展，但仍存在很多问题，为了解决这些问题，我们开发了景观植物信息查询系统(简称LPIIS)。LPIIS的构建包括后台数据库和管理系统2部分，以Microsoft Access开发后台景观植物数据库，实现各种零散的景观植物数据资料的数字化；采用面向对象的开发语言VB进行信息系统的界面设计和系统集成，实现了人性化的界面，操作更为方便。LPIIS的出现改变了过去景观植物信息管理的手工方式，具有可视化人性化的界面、提供多媒体信息、数据的维护和更新具有继承性、后台数据库可方便的移植于网络等特点。  相似文献   

甜菜不同种植方式的研究   总被引：2，自引：1，他引：1  

张羊换  武志刚  孙鹏程  郑依林  魏小平  张剑 《中国糖料》2005,(2):34-36

通过试验明确了覆膜移栽纸筒苗栽培方法具有覆盖地膜和育苗移栽双重效应，促进甜菜早发棵，早封垄。提早进入叶丛快速生长期和块根糖分积累期；改善了甜菜光合性能，增加了光合势、净光合率和光合产物经济系数，比不覆膜移栽纸筒苗的增产31％，产糖量增加27．12％，投入产出比大幅度增加。  相似文献   

Phytotoxicity on cotton ex-plants of an 18.5 kDa protein from culture filtrates of Verticillium dahliae     

Clovis S. Palmer  Jennifer A. Saleeba  Bruce R. Lyon   《Physiological and Molecular Plant Pathology》2005,67(6):427

A phytotoxic protein that evokes the typical symptoms of Verticillium wilt disease in seedlings of Gossypium hirsutum L. (Upland cotton) was isolated from culture filtrates of Verticillium dahliae. The protein was purified by ammonium sulfate precipitation, Sephadex-G100 fractionation, and native PAGE. The 18.5 kDa protein, designated VD18.5, appears to be a single subunit protein with an isoelectric point between 3 and 5. VD18.5 induces symptoms of leaf dehydration, chlorosis, necrosis and stem discoloration in seedlings of the disease susceptible cotton cultivar Siokra 1–4. The LD₅₀ of VD18.5 on protoplasts of Siokra 1–4 was 18 μg mL⁻¹. VD18.5 had no noticeable effect on Pima S-7, which is a disease resistant cultivar. Phytotoxic activity was partially destroyed at high temperature and was abolished by digestion with proteinase K. Mass spectrometry fingerprinting and protein sequence data from VD18.5 yielded no significant matches when submitted to the Mascot search engine and NCBI non-redundant protein databases, respectively. These results suggest that VD18.5 is a novel protein that may be involved in the development of some of the symptoms associated with Verticillium wilt disease in the cotton plant.  相似文献   

甘肃荚蒾属(Viburnum L. )观赏植物资源的调查研究     

白长财  马志刚 《园艺学报》2005,32(1):155-158

 在对甘肃荚蒾属植物资源调查的基础上, 整理并描述了27个分类群的生境、分布以及观赏性状, 包括叶、花、果实等, 并结合该属植物的资源现状, 提出了可持续开发利用的建议。  相似文献   

‘过山香’香蕉多芽体的诱导及其体细胞胚的发生   总被引：7，自引：2，他引：7  

魏岳荣  黄学林  黄霞  李佳  肖望  李筱菊 《园艺学报》2005,32(3):414-419

 以我国重要香蕉种质‘过山香’ (AAB) 为材料, 研究了香蕉多芽体诱导、多芽体茎尖薄切片即分生组织性的表层结构物( scalp) 愈伤组织诱导和体细胞胚发生的合适条件。结果表明, 该品种单个不定芽茎尖在P4培养基(含BAP 100 μmol·L ^{- 1}和IAA 1 μmol·L ^{- 1} ) 中继代5个周期后可诱导获得类似花椰菜结构的多芽体。从30 μmol· m ^{- 2} ·s^{- 1}光强, 光/暗周期(16 h /8 h) 培养的多芽体所获得的scalp在添加2,4-D 5μmol·L ^{- 1}和Zeatin 1 μmol·L ^{- 1}的愈伤组织诱导培养基中黑暗培养, 45 d后愈伤组织诱导率可达97.6%。诱导20 d后黄色分生小球体类结节状愈伤组织开始发生, 90～120 d后在分生小球体局部可获得白色或浅黄色松散的胚性愈伤组织(诱导率为17.5% ) 。从胚性愈伤组织诱导的体细胞胚在成熟培养基上培养60 d后体胚萌发率和植株转化率分别为14.5%和11.1%。  相似文献