Determining Large Trees and Population Structures of Typical Tree Species in Northeast China
Specialized research on large trees in Northeast China is rare. To strengthen the understanding of local large trees, a survey of 4055 tree individuals from 75 plots in southeastern Jilin Province was conducted. The individual number and species composition of large trees in the community, as well a...
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MDPI AG
2025-07-01
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| author | Yutong Yang Zhiyuan Jia Shusen Ge Yutang Li Dongwei Kang Junqing Li |
| author_facet | Yutong Yang Zhiyuan Jia Shusen Ge Yutang Li Dongwei Kang Junqing Li |
| author_sort | Yutong Yang |
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| description | Specialized research on large trees in Northeast China is rare. To strengthen the understanding of local large trees, a survey of 4055 tree individuals from 75 plots in southeastern Jilin Province was conducted. The individual number and species composition of large trees in the community, as well as large individual standards in diameter at breast height (DBH) and population structures of typical tree species, were analyzed. By setting a DBH ≥ 50 cm as the threshold, 155 individuals across all the recorded trees were determined as large trees in the community, and 32.9% (51/155) of them were national second-class protected plant species in China. By setting the top 5% in DBH of a certain tree species as the threshold of large individuals of that tree species, the large individual criteria of six typical tree species were determined. The proportion of basal area of large trees to all trees was 30.4%, and the mean proportion of basal area of large individuals across the six typical tree species was 23.9% (±4.0%). As for the population characteristics, <i>Abies nephrolepis</i> and <i>Picea jezoensis</i> had large population sizes but relatively thin individuals, <i>Tilia amurensis</i> and <i>Pinus koraiensis</i> had small population sizes but relatively thick individuals, while <i>Betula costata</i> and <i>Larix olgensis</i> had medium population sizes and medium-sized individuals. |
| format | Article |
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| institution | DOAJ |
| issn | 1424-2818 |
| language | English |
| publishDate | 2025-07-01 |
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| spelling | doaj-art-5ce0cbf3b6534d9b9f1ab56f704c8c792025-08-20T03:08:09ZengMDPI AGDiversity1424-28182025-07-0117749110.3390/d17070491Determining Large Trees and Population Structures of Typical Tree Species in Northeast ChinaYutong Yang0Zhiyuan Jia1Shusen Ge2Yutang Li3Dongwei Kang4Junqing Li5School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, ChinaSchool of Tourism, Xinyang Normal University, Xinyang 464000, ChinaForest Inventory and Planning Institute of Jilin Province, Changchun 130022, ChinaForest Inventory and Planning Institute of Jilin Province, Changchun 130022, ChinaSchool of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, ChinaSchool of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, ChinaSpecialized research on large trees in Northeast China is rare. To strengthen the understanding of local large trees, a survey of 4055 tree individuals from 75 plots in southeastern Jilin Province was conducted. The individual number and species composition of large trees in the community, as well as large individual standards in diameter at breast height (DBH) and population structures of typical tree species, were analyzed. By setting a DBH ≥ 50 cm as the threshold, 155 individuals across all the recorded trees were determined as large trees in the community, and 32.9% (51/155) of them were national second-class protected plant species in China. By setting the top 5% in DBH of a certain tree species as the threshold of large individuals of that tree species, the large individual criteria of six typical tree species were determined. The proportion of basal area of large trees to all trees was 30.4%, and the mean proportion of basal area of large individuals across the six typical tree species was 23.9% (±4.0%). As for the population characteristics, <i>Abies nephrolepis</i> and <i>Picea jezoensis</i> had large population sizes but relatively thin individuals, <i>Tilia amurensis</i> and <i>Pinus koraiensis</i> had small population sizes but relatively thick individuals, while <i>Betula costata</i> and <i>Larix olgensis</i> had medium population sizes and medium-sized individuals.https://www.mdpi.com/1424-2818/17/7/491diameter class structureprotected plantspecies compositionforest protection |
| spellingShingle | Yutong Yang Zhiyuan Jia Shusen Ge Yutang Li Dongwei Kang Junqing Li Determining Large Trees and Population Structures of Typical Tree Species in Northeast China Diversity diameter class structure protected plant species composition forest protection |
| title | Determining Large Trees and Population Structures of Typical Tree Species in Northeast China |
| title_full | Determining Large Trees and Population Structures of Typical Tree Species in Northeast China |
| title_fullStr | Determining Large Trees and Population Structures of Typical Tree Species in Northeast China |
| title_full_unstemmed | Determining Large Trees and Population Structures of Typical Tree Species in Northeast China |
| title_short | Determining Large Trees and Population Structures of Typical Tree Species in Northeast China |
| title_sort | determining large trees and population structures of typical tree species in northeast china |
| topic | diameter class structure protected plant species composition forest protection |
| url | https://www.mdpi.com/1424-2818/17/7/491 |
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