A basic ingredient analysis of flora and geographic elements of plant genera and families in Daqi Mountain Nature Reserve was conducted through the field survey and specimen collection,based on the system investigatio...A basic ingredient analysis of flora and geographic elements of plant genera and families in Daqi Mountain Nature Reserve was conducted through the field survey and specimen collection,based on the system investigation of plant flora,and an R/T ratio comparison between the flora in Daqi Mountain and adjacent mountain floras was made.Plant taxonomy identification indicates that spermatophytes in the nature reserve comprises 1035 species of 534 genera,falling in 140families,of which 10 gymnosperm species of 8 genera fall in 5 families,while 1025angiosperm species of 526 genera in 135 families.The analysis of flora demonstrates that the region harbors 15 flora distribution types,with high complexity,paleo-flora origin,distinct trait of temperate zone,abundant ingredient of tropical zone,and close connection with the flora of East China.展开更多
The evolution of spermatophytes(seed plants)is relatively well known in their evolutionary relationships over temporal changes,but their spatial evolution is another critical yet often neglected lens,especially using ...The evolution of spermatophytes(seed plants)is relatively well known in their evolutionary relationships over temporal changes,but their spatial evolution is another critical yet often neglected lens,especially using a taxon-based approach.Here,by integrating geographic distributions and origin locations across 429 spermatophyte families worldwide with unsupervised machine learning approaches,we constructed a Spermatophyte Spatial Evolutionary System(SSES)that classifies global spermatophytes into 18 distribution types and six distribution supertypes within three primary floristic elements:cosmopolitan,tropical,and temperate.We found that the three elements all primarily originated from Gondwana,with the cosmopolitan element being the youngest and the temperate element being the oldest in terms of origin.They primarily formed during the Tertiary,particularly between the Eocene and Miocene,driven mainly by climate,long-distance dispersal,and tectonic movement,while each exhibited distinct migration routes and formation models.Our results provide novel insights into the spatial evolution of global spermatophytes and highlight that similar distribution patterns of spermatophytes were driven by their comparable formation processes and mechanisms at the levels of floristic element,distribution supertype,and type.展开更多
Henan province, located between 110°21＇E-116°39＇E and 31°23＇N-36°22＇N, stretches from warm-temperate to subtropical transitional zone. Its special position and resultant varied physical conditi...Henan province, located between 110°21＇E-116°39＇E and 31°23＇N-36°22＇N, stretches from warm-temperate to subtropical transitional zone. Its special position and resultant varied physical conditions, in its long geologic history, give rise to not only a rich but also complex and prominently transitional flora. Therefore, in-depth study of the floristic areal differentiation is of importance to Chinese florilization and in accurately drawing the boundary of warm-temperate and subtropic zones in China. Based on the recent floristic data, this paper conducts comparison and analysis of the floristic difference and resemblance among the Dabie, Tongbai, Funiu and Taihang Mts. in Henan province. The result shows that the Dabie and the Tongbai Mts. have the similar flora components, the northern and the southern slopes of the Funiu Mts. have identical flora, but the Taihang Mts. stand alone in their floristic character. Therefore these mountainous areas should be grouped into three floral regions in China： the Dabie and the Tongbai Mts. belong to East China Floral Region, the Taihang Mts. to North China Floral Region, and the two slopes of the Funiu Mts.to Central China region.展开更多
Based on the latest data, the features of spermatophytic flora of Henan Province located in Central China Plain (the heart region of China) are summarized and demonstrated in this paper. They are as follows: 1) Plant ...Based on the latest data, the features of spermatophytic flora of Henan Province located in Central China Plain (the heart region of China) are summarized and demonstrated in this paper. They are as follows: 1) Plant species are rich, with 2953 wild species in 896 genera of 152 families, putting Henan in front rank in the northern areas of China. 2) Its origin is from far ancientry, and there exist many primitive families and genera as well as many relic species. 3) The character of transition is very conspicuous with complex and varied geographical elements, but the temperate type being the dominant. There are 15 types and 18 variants of distribution types at the genera level, the typical Temperate, Tropic and East Asia elements respectively make up 47.9%, 29.5% and 14.5%. 4) It is rich in species endemic to China, with 1514 species, ranking first in the northern areas in China. 5) The floristic spatial differentia is obvious. The southeastern Henan belongs to East China plant region, the southwestern to Central China, the northern and the central to North China.展开更多
基金Supported by Hubei Forestry Science and Technology Research Project
文摘A basic ingredient analysis of flora and geographic elements of plant genera and families in Daqi Mountain Nature Reserve was conducted through the field survey and specimen collection,based on the system investigation of plant flora,and an R/T ratio comparison between the flora in Daqi Mountain and adjacent mountain floras was made.Plant taxonomy identification indicates that spermatophytes in the nature reserve comprises 1035 species of 534 genera,falling in 140families,of which 10 gymnosperm species of 8 genera fall in 5 families,while 1025angiosperm species of 526 genera in 135 families.The analysis of flora demonstrates that the region harbors 15 flora distribution types,with high complexity,paleo-flora origin,distinct trait of temperate zone,abundant ingredient of tropical zone,and close connection with the flora of East China.
基金supported by the Second Tibetan Plateau Scientific Expedition and Research(STEP)program(2024QZKK0200)the National Natural Science Foundation of China(32322006 and 32100187)+2 种基金the Key Projects of the Joint Fund of the National Natural Science Foundation of China(U23A20149)the Key R&D Program of Yunnan Province(202103AF140005 and 202101BC070002)the Strategic Biological Resources Capacity Building Project of Chinese Academy of Sciences(KFJBRP-017-08)。
文摘The evolution of spermatophytes(seed plants)is relatively well known in their evolutionary relationships over temporal changes,but their spatial evolution is another critical yet often neglected lens,especially using a taxon-based approach.Here,by integrating geographic distributions and origin locations across 429 spermatophyte families worldwide with unsupervised machine learning approaches,we constructed a Spermatophyte Spatial Evolutionary System(SSES)that classifies global spermatophytes into 18 distribution types and six distribution supertypes within three primary floristic elements:cosmopolitan,tropical,and temperate.We found that the three elements all primarily originated from Gondwana,with the cosmopolitan element being the youngest and the temperate element being the oldest in terms of origin.They primarily formed during the Tertiary,particularly between the Eocene and Miocene,driven mainly by climate,long-distance dispersal,and tectonic movement,while each exhibited distinct migration routes and formation models.Our results provide novel insights into the spatial evolution of global spermatophytes and highlight that similar distribution patterns of spermatophytes were driven by their comparable formation processes and mechanisms at the levels of floristic element,distribution supertype,and type.
文摘Henan province, located between 110°21＇E-116°39＇E and 31°23＇N-36°22＇N, stretches from warm-temperate to subtropical transitional zone. Its special position and resultant varied physical conditions, in its long geologic history, give rise to not only a rich but also complex and prominently transitional flora. Therefore, in-depth study of the floristic areal differentiation is of importance to Chinese florilization and in accurately drawing the boundary of warm-temperate and subtropic zones in China. Based on the recent floristic data, this paper conducts comparison and analysis of the floristic difference and resemblance among the Dabie, Tongbai, Funiu and Taihang Mts. in Henan province. The result shows that the Dabie and the Tongbai Mts. have the similar flora components, the northern and the southern slopes of the Funiu Mts. have identical flora, but the Taihang Mts. stand alone in their floristic character. Therefore these mountainous areas should be grouped into three floral regions in China： the Dabie and the Tongbai Mts. belong to East China Floral Region, the Taihang Mts. to North China Floral Region, and the two slopes of the Funiu Mts.to Central China region.
文摘Based on the latest data, the features of spermatophytic flora of Henan Province located in Central China Plain (the heart region of China) are summarized and demonstrated in this paper. They are as follows: 1) Plant species are rich, with 2953 wild species in 896 genera of 152 families, putting Henan in front rank in the northern areas of China. 2) Its origin is from far ancientry, and there exist many primitive families and genera as well as many relic species. 3) The character of transition is very conspicuous with complex and varied geographical elements, but the temperate type being the dominant. There are 15 types and 18 variants of distribution types at the genera level, the typical Temperate, Tropic and East Asia elements respectively make up 47.9%, 29.5% and 14.5%. 4) It is rich in species endemic to China, with 1514 species, ranking first in the northern areas in China. 5) The floristic spatial differentia is obvious. The southeastern Henan belongs to East China plant region, the southwestern to Central China, the northern and the central to North China.
