中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 青藏高原东北缘3种灌木数量性状、 龄级结构及自疏特征 草业科学 2019,36 (5) 1207-1214
Position: Home > Articles > Quantitative traits, age structure and self-thining rule of three shrubs on northest edge of Qinghai-Tibet plateau Pratacultural Science 2019,36 (5) 1207-1214

青藏高原东北缘3种灌木数量性状、 龄级结构及自疏特征

作  者：
徐文兵;赵敏;瓦勒塔;施颖;胡廷花;于应文
单  位：
兰州大学草地农业生态系统国家重点实验室/兰州大学农业农村部草牧业创新重点实验室/兰州大学草地农业科技学院
关键词：
金露梅;高山柳;头花杜鹃;生物量估测模型;年龄结构;自疏
摘  要：
以青藏高原东北缘高寒灌丛优势种金露梅(Potentilla fruticosa)、高山柳(Salix cupularis)和头花杜鹃(Rhododendron capitatum)为对象,通过对其数量性状(株高、冠幅直径、分枝数、单株重、个体分枝重)与年龄结构及自疏特征分析,构建3种灌木株丛生物量估测模型,明确其年龄结构模式,确定3种灌木分枝数和分枝重之间是否存在自疏特征.结果表明:1)植物种群数量性状对其地上部分单株重影响为金露梅>高山柳>头花杜鹃;2)冠幅直径可作为3种灌木单株重估测模型适宜指标,基于冠幅直径(CD,cm)构建的灌木单株重(PW,kg)估测模型PW金露梅=–0.310+0.014CD,PW高山柳=–1.688+0.033CD和PW头花杜鹃=–0.203+0.013CD;3)头花杜鹃和高山柳属于增长型种群,具一定稳定性,金露梅属于稳定型种群;4)头花杜鹃株丛分枝数和分枝重之间存在明显自疏特征.研究认为,3种灌木的数量性状、年龄结构和自疏特征存在分异特征,是其对高寒生境的长期适应性结果.
译  名：
Quantitative traits, age structure and self-thining rule of three shrubs on northest edge of Qinghai-Tibet plateau
作  者：
XU Wenbing;ZHAO Min;Waleta;SHI Ying;HU Tinghua;YU Yingwen;State Key Laboratory of Grassland Agro-ecosystems/Key Laboratory of Grassland Livestock Industry Innovation/Ministry of Agriculture and Rural Affairs/College of Pastoral Agriculture Science and Technology,Lanzhou University;
关键词：
Potentilla fruticosa;;Salix cupularis;;Rhododendron capitatum;;biomass estimation model;;age structure;;self-thinning law
摘  要：
The quantitative traits(plant height, crown diameter, number of branches, plant weight and branch weight), age structure and self-thinning rule of Potentilla fruticosa, Salix cupularis and Rhododendron capitatum on the northeast margin of the Qinghai-Tibet Plateau were studied. We constructed the estimation model of plant biomass of this three shrubs,determined their age structures, and clarified the self-thinning relationship between the number of branches and branch weight for each shrub. The results showed that: 1) The impact on the plant weight by the quantitative characteristics of each species was Potentilla fruticosa > Salix cupularis > Rhododendron capitatum; 2) The crown diameter could be used as a suitable index for estimating the shrub plant weight, the estimation models of plant weight(PW, kg) basing on the crown diameters(CD, cm) were PW = –0.310 + 0.014 CD for P. fruticosa, PW = –1.688 + 0.033 CD for S. cupularis and PW =–0.203 + 0.013 CD for R. capitatum, respectively; 3) S. cupularis and R. capitatum was a growing population and had a certain stability, while the P. fruticosa belonged to a stable population; 4) There was an obvious self-thinning law between branch weight and number of branches of R. capitatum. This research shows that the quantitative traits, age structure and self-thinning law for each species is different, which suggests that it is an adaptive result to different habitats and nutrient resources.

相似文章

导出引用
计量
文章访问数: 12
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46