2) metapopulation
异质种群
1.
Stable Patchy Distribution of a Metapopulation;
异质种群的稳定缀块分布
2.
This paper reviews the studies of several popu lar concepts in the intellectual froniter fields of modern ecology, including li miting factors, niche, metapopulation and clonal plant population.
对现代生态学前沿领域中的流行概念 :限制因子、生态因子、生态位、异质种群和克隆种群进行了评介 ,对概念的范式变迁 ,理论和实践的应用进行了探
3) population variability
种群变异性
1.
The patterns and underlying mechanisms of the relationship between species diversity and population variability in alpine meadow plant communities;
高寒草甸植物群落中物种多样性与种群变异性关系及其机制初探
2.
By analyzing the plant community data from a natural alpine meadow,effects of the similarity in species composition,statistical averaging,net covariance,and population variability on the relationships of species diversity with the variability of aboveground biomass in alpine meadow plant community were investigated.
通过对高寒草甸植物群落中采集的群落数据进行分析,探讨了物种构成的相似性、统计平均、种群变异性和净协方差等机制对形成高寒草甸植物群落中多样性与群落地上生物量变异性之间关系的影响。
4) metapopulation model
异质种群模型
1.
On the basis of spatial structure analysis of the whole watershed and the Quercus liaotungensis patches, and through the DBH area dynamic relationship between dominance tree and companion tree modeling using BP-artificial neural networks, a spatial realistic metapopulation model was develop.
本研究以小流域景观中破碎化的辽东栎林为研究对象，在对小流域森林景观破碎化及辽东栎斑块空间结构现状分析的基础上，通过BP神经网络模型对优势树种与伴生物种之间胸高断面积关系的描述，建立描述辽东栎种群动态的空间现实的异质种群模型。
5) heterogeneity of communities
群落异质性
6) germplasm diversity
种质差异性
1.
Studies on germplasm diversity of Arthrospira exDNAThe exDNA of seven Arthrospira strains were detected by the improved method, and the results showed that all the strains contained exDNA, moreover, exDNA from different strains differed in their types.
一、节旋藻exDNA的种质差异性研究 在完善已有节旋藻exDNA提取技术方法的基础上,考察了7株钝顶节旋藻的exDNA。
补充资料：卵巢混合性生殖细胞-性索间质性肿瘤
卵巢混合性生殖细胞-性索间质性肿瘤
本瘤1921年首次由Masson描述，直到1972年由Telerman首次命名为本瘤，并沿用至今，本瘤病因尚不明了。发生年龄自新生儿到67岁妇女均可发生，少数为男性。临床表现：患者为正常女性及男性外表，女性病人可有下腹包块，发生蒂扭转时有下腹痛，并有急腹症症状，可有内分泌紊乱，性早熟表现，男性有睾丸增大。染色体核型分析均正常。内分泌检查与临床表现符合，肿瘤为单侧，圆形或卵圆形。表面光滑，直径2.5～30cm，实性肿瘤内有囊性区。切面灰白、灰红或淡黄至淡褐色。镜下有梭形细胞及生殖细胞。治疗：视情况采取单纯手术，或手术加放疗及化疗。需长期随访。预后：单纯本病者良好。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条