区域种子植物物种数目估计方法的研究
项目介绍
AI项目解读
基本信息
- 批准号:39900018
- 项目类别:青年科学基金项目
- 资助金额:15.0万
- 负责人:
- 依托单位:
- 学科分类:C0305.群落生态学
- 结题年份:2002
- 批准年份:1999
- 项目状态:已结题
- 起止时间:2000-01-01 至2002-12-31
- 项目参与者:陈灵芝; 于顺利; 郑豫; 王巍; 李庆康;
- 关键词:
项目摘要
Many theoretical problems of Ecology came down to the number of species in ecosystems and regions. And the understanding of species number in an ecosystem or region was necessary information for conservation and sustainable utilization. In the last years, there had been some development in different scales (community, regional and global) and the estimating methods of species number. But the estimating methods of species number at regional or global scale was immature and the error resulted from different methods was significant. And these methods were mostly used in animal species such as insects. A little research had been done in the estimation of species number at regional or global scale. Compared with other vegetation data, Remote Sensing had distinct advantages. The vegetation of Donglingshan District, Beijing, Was typical, with pretty good research basis, which made it a suitable region for the research of species number estimation. We planed to compare the influence of vegetation map made based on different Remote Sensing data(TM and MSS), different sampling methods (random and MWNP) and different species-area relationship model to the number estimation of regional species, in order to find out the methods to estimate the number of regional species. The research was important for the research of the relationship of species-area relationship, the gradient of species with latitude and altitude, species number and biomass, productivity, rainfall and other environmental factors and the survey, evaluation of biodiversity.Long term plot(250m×200m), temporary transect(200m×40m) and quadrat were adopted in the research and all the plots were divided into small quadrat(5m×5m) in order to compare the influence of different sampling methods and species-area relationship model to the estimation of number of regional seed plant species. And the communities were classified and the species diversity in the communities and ecotones was studied.The result showed that the property of high species diversity in the ecotones was not significant. Different species diversity(richness and evenness) was different in different communities, different levels(trees, shrubs and grass) and different spatial scales(5m×5m and 25m×25m). Only at the scale from 5m×5m to 10m×10m in the ecotone of Quercus liaotungensis and Juglans mandshurica ,the scale of 20m×30m in the ecotone of Quercus liaotungensis and Betula dahurica, the scale from 5m×5m to 10m×10m in the ecotone of mixed shrubs and mixed deciduous broadleaved forest, the species richness was more than that of the corresponding levels in the typical communities.The powers of all the five statistics increase as distance order j increase against inhomogeneous random pattern. They decrease for Pi and Ce and increase for Po,Jz and Eb against regular and Poisson cluster patterns. Po,Jz and Eb can reach high powers with the third or higher order distances in most cases..Nestedness had been suggested to have implications for biological conservation, particularly in relation to SLOSS. It was suggested that Patil and Taillie's right-tail-sum diversity should be the first choice and Hurlbert-Smith-Grasssle's expected diversity be the second in diversity ordering.
考察不同分辨率的卫星遥感数据、不同的植被抽样方法以及不同的种-面积关系模型对区域肿又参镂镏质抗兰频挠跋欤佣范ê鲜实墓兰品椒āU舛灾?面积关系、物种数目的纬度梯度和海拔高度梯度、物种数目与生物量、生产力以及降水量和其他环境变量之间的关系等理论问题的深入研究、以及生物多样性的检测与评价都具有重要意义。
结项摘要
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
数据更新时间:{{ journalArticles.updateTime }}
{{
item.title }}
{{ item.translation_title }}
- DOI:{{ item.doi || "--"}}
- 发表时间:{{ item.publish_year || "--" }}
- 期刊:{{ item.journal_name }}
- 影响因子:{{ item.factor || "--"}}
- 作者:{{ item.authors }}
- 通讯作者:{{ item.author }}
数据更新时间:{{ journalArticles.updateTime }}
{{ item.title }}
- 作者:{{ item.authors }}
数据更新时间:{{ monograph.updateTime }}
{{ item.title }}
- 作者:{{ item.authors }}
数据更新时间:{{ sciAawards.updateTime }}
{{ item.title }}
- 作者:{{ item.authors }}
数据更新时间:{{ conferencePapers.updateTime }}
{{ item.title }}
- 作者:{{ item.authors }}
数据更新时间:{{ patent.updateTime }}
其他文献
其他文献
{{
item.title }}
{{ item.translation_title }}
- DOI:{{ item.doi || "--" }}
- 发表时间:{{ item.publish_year || "--"}}
- 期刊:{{ item.journal_name }}
- 影响因子:{{ item.factor || "--" }}
- 作者:{{ item.authors }}
- 通讯作者:{{ item.author }}

内容获取失败,请点击重试

查看分析示例
此项目为已结题,我已根据课题信息分析并撰写以下内容,帮您拓宽课题思路:
AI项目摘要
AI项目思路
AI技术路线图

请为本次AI项目解读的内容对您的实用性打分
非常不实用
非常实用
1
2
3
4
5
6
7
8
9
10
您认为此功能如何分析更能满足您的需求,请填写您的反馈:
刘灿然的其他基金
利用3S技术研究北京山区植物群落多样性的空间分布格局
- 批准号:39770131
- 批准年份:1997
- 资助金额:12.0 万元
- 项目类别:面上项目
相似国自然基金
{{ item.name }}
- 批准号:{{ item.ratify_no }}
- 批准年份:{{ item.approval_year }}
- 资助金额:{{ item.support_num }}
- 项目类别:{{ item.project_type }}
相似海外基金
{{
item.name }}
{{ item.translate_name }}
- 批准号:{{ item.ratify_no }}
- 财政年份:{{ item.approval_year }}
- 资助金额:{{ item.support_num }}
- 项目类别:{{ item.project_type }}