滇青冈化感作用研究与生物除草剂研制

As a dominant species of evergreen broad-leaved forest, Cyclobalanopsis glaucoides with distribution center in Yunnan plateau has wide ecological amplitude, and grows in the various types of semi-humid evergreen broad-leaved forest. The chemistry relationship between species is more complex, which is suitable for allelopathy study. Biological adaptation to the environment is the necessary conditions of plant evolution, and allelopathy characteristics are the result of the long-term plant evolution. The purpose of this application foundation item is to have a systematic research to allelopathy of Cyclobalanopsis glaucoides, in order to 1) study allelopathic effects of Cyclobalanopsis glaucoides on other dominants and alien invasive plants in semi-humid evergreen broad-leaved forest, and then develop bioherbicide, 2) discuss its geographical distribution of ecological causes and historical causes with the evidence from vegetation ecology, plant geography, plant chemical ecology data, 3) reveal the spatial and temporal distribution pattern of Cyclobalanopsis glaucoides community, and causes of the distribution pattern and mechanism of community succession, 4) lay a solid foundation to understand this plant, resources of Yunnan province and its chemical ecology characteristics.

作为常绿阔叶林的优势种，滇青冈（Cyclobalanopsis glaucoides）以云南高原为分布中心，具有较广的生态适应幅度，生长于半湿润常绿阔叶林的各种类型中，物种间化学关系比较复杂，是一个适合进行化感作用研究的类群。植物对环境的适应是植物进化的必要条件，而植物的化感作用特性是植物长期进化的结果。本申请项目拟对滇青冈化感作用进行系统的研究，着重探究滇青冈对半湿润常绿阔叶林中其它优势种和外来入侵植物的化感作用,在此基础上进行生物除草剂的研制，以期能结合植被生态学、植物地理学与植物化学生态学证据，探讨滇青冈地理分布的生态成因和历史成因，揭示该植物群落的时空分布格局及其形成和演替的原因和机制，为充分了解云南该种植物资源及其化学生态学特性打下坚实的基础。

为了探究作为常绿阔叶林优势种的滇青冈（Cyclobalanopsis glaucoides）对半湿润常绿阔叶林中其它优势种（包括元江栲（Castanopsis orthacantha）、滇玉兰（Magnolia delavayi）、云南樟(Cinnamomum glanduliferum)、滇野山茶（Camellia pitardii var.yunnanica）、凤尾蕨（Pteris cretica var.nervosa）、浆果苔草（Carex baccans））和外来入侵植物（包括紫茎泽兰（Eupatorium adenophorum）和三叶鬼针草（Bidens pilosa））及次生植被的优势种（云南松（Pinus yunnanensis））的化感作用和作用机理,并在此基础上进行生物除草剂的研制，对滇青冈化感作用进行了系统的研究，揭示了该植物群落的时空分布格局及其形成和演替的化学生态学原因和机制，为充分了解云南该种植物资源及其化学生态学特性打下了坚实的基础，并对基于植物化感作用基础上的生物除草剂研制进行了积极的探索与实践。