Forest characteristics, population structure and growth trends of threatened relict Pseudotsuga forrestii in China

doi:10.1016/j.pld.2022.10.005

Plant Diversity ›› 2023, Vol. 45 ›› Issue (04): 422-433.DOI: 10.1016/j.pld.2022.10.005

Forest characteristics, population structure and growth trends of threatened relict Pseudotsuga forrestii in China

Cindy Q. Tang^a, Shi-Qian Yao^a, Peng-Bin Han^b, Jian-Ran Wen^a, Shuaifeng Li^c, Ming-Chun Peng^a, Chong-Yun Wang^a, Tetsuya Matsui^d,e, Yong-Ping Li^f, Shan Lu^g, Yuan He^h

a. Institute of Ecology and Geobotany, College of Ecology and Environmental Science, Yunnan University, Building Shixun, Chenggong Campus, Dongwaihuan South Road, University Town, Chenggong New District, Kunming, Yunnan 650504, China;
b. College of Life Sciences, Yunnan University, Shengming Kexueyuan Building #2, Chenggong Campus, Dongwaihuan South Road, University Town, Chenggong New District, Kunming, Yunnan 650504, China;
c. Institute of Highland Forest Science, Chinese Academy of Forestry, Kunming, Yunnan 650224, China;
d. Forestry and Forest Products Research Institute, Forest Research and Management Organization, Matsunosato 1, Tsukuba-shi, Ibaraki-ken, 305-8687, Japan;
e. Faculty of Life & Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8572, Japan;
f. College of Natural Resources, Yunnan University, Chenggong Campus, Dongwaihuan South Road, University Town, Chenggong New District, Kunming, Yunnan 650504, China;
g. Forestry and Grassland Bureau of Diqing Tibetan Autonomous Prefecture, 1st Floor of Government Building, Shengping Town, Deqing County, Yunnan 674500, China;
h. Forestry and Grassland Bureau of Weixi Lisu Autonomous County, Nanjian Dao #7, Baohe Town, Weixi Lisu Autonomous County, Yunnan 674600, China

收稿日期:2022-06-12 修回日期:2022-10-25 出版日期:2023-07-25 发布日期:2023-08-21
通讯作者: Cindy Q. Tang,E-mail:cindytang@ynu.edu.cn;Ming-Chun Peng,E-mail:mchpeng@ynu.edu.cn
基金资助:
This study received financial support from the Science and Technology Department of Yunnan University, China (2019YNU002), Major Program for Basic Research Project of Yunnan Province, China (202101BC070002), the Special Foundation for National Science and Technology Basic Resources Investigation of China (2019FY202300).

Forest characteristics, population structure and growth trends of threatened relict Pseudotsuga forrestii in China

Cindy Q. Tang^a, Shi-Qian Yao^a, Peng-Bin Han^b, Jian-Ran Wen^a, Shuaifeng Li^c, Ming-Chun Peng^a, Chong-Yun Wang^a, Tetsuya Matsui^d,e, Yong-Ping Li^f, Shan Lu^g, Yuan He^h

a. Institute of Ecology and Geobotany, College of Ecology and Environmental Science, Yunnan University, Building Shixun, Chenggong Campus, Dongwaihuan South Road, University Town, Chenggong New District, Kunming, Yunnan 650504, China;
b. College of Life Sciences, Yunnan University, Shengming Kexueyuan Building #2, Chenggong Campus, Dongwaihuan South Road, University Town, Chenggong New District, Kunming, Yunnan 650504, China;
c. Institute of Highland Forest Science, Chinese Academy of Forestry, Kunming, Yunnan 650224, China;
d. Forestry and Forest Products Research Institute, Forest Research and Management Organization, Matsunosato 1, Tsukuba-shi, Ibaraki-ken, 305-8687, Japan;
e. Faculty of Life & Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8572, Japan;
f. College of Natural Resources, Yunnan University, Chenggong Campus, Dongwaihuan South Road, University Town, Chenggong New District, Kunming, Yunnan 650504, China;
g. Forestry and Grassland Bureau of Diqing Tibetan Autonomous Prefecture, 1st Floor of Government Building, Shengping Town, Deqing County, Yunnan 674500, China;
h. Forestry and Grassland Bureau of Weixi Lisu Autonomous County, Nanjian Dao #7, Baohe Town, Weixi Lisu Autonomous County, Yunnan 674600, China

Received:2022-06-12 Revised:2022-10-25 Online:2023-07-25 Published:2023-08-21
Contact: Cindy Q. Tang,E-mail:cindytang@ynu.edu.cn;Ming-Chun Peng,E-mail:mchpeng@ynu.edu.cn
Supported by:
This study received financial support from the Science and Technology Department of Yunnan University, China (2019YNU002), Major Program for Basic Research Project of Yunnan Province, China (202101BC070002), the Special Foundation for National Science and Technology Basic Resources Investigation of China (2019FY202300).

摘要/Abstract

摘要： Pseudotsuga forrestii is a relict evergreen coniferous tree species in Pinaceae endemic to China. P. forrestii tree numbers have greatly decreased due to deforestation, over-utilization and habitat degradation. Here we clarify P. forrestii community types, structure, species diversity, seedling recruitments and growth trends. We identified four P. forrestii community types: (1) Pseudotsuga forrestii - Quercus guyavifolia - Acer davidii evergreen coniferous and broad-leaved mixed forest; (2) Pseudotsuga forrestii - Pinus yunnanensis - Quercus guyavifolia evergreen coniferous and broad-leaved mixed forest; (3) Pseudotsuga forrestii evergreen coniferous forest; (4) Pseudotsuga forrestii - Abies georgei var. smithii evergreen coniferous forest. P. forrestii forests are characterized by both warm temperate and temperate affinities. Simpson diversity, Pielou evenness, Shannon–Wiener diversity indices ranged from 0.75 to 0.76, 0.74–0.81, and 1.62–1.93, respectively, with no significant differences among the four forest types. The forest stratification was multilayered. The canopy layer was generally 10–25 m tall, with the emergent layer reached 25–42 m. DBH and age structures of P. forrestii showed multimodal distributions. Its maximum age P. forrestii was 570 years with a DBH of 143 cm. The growth of annual ring width of P. forrestii was slow, and generally decreased with age, whereas the basal area at the breast height increased with age. Established seedlings/saplings were mainly found in unstable micro-habitats. Regeneration of P. forrestii depends on moderate natural disturbances. Finally, we provide recommendations for P. forrestii conservation.

关键词: Pseudotsuga forrestii, Community structure, Species diversity, Population structure, Regeneration, Growth trend

Abstract: Pseudotsuga forrestii is a relict evergreen coniferous tree species in Pinaceae endemic to China. P. forrestii tree numbers have greatly decreased due to deforestation, over-utilization and habitat degradation. Here we clarify P. forrestii community types, structure, species diversity, seedling recruitments and growth trends. We identified four P. forrestii community types: (1) Pseudotsuga forrestii - Quercus guyavifolia - Acer davidii evergreen coniferous and broad-leaved mixed forest; (2) Pseudotsuga forrestii - Pinus yunnanensis - Quercus guyavifolia evergreen coniferous and broad-leaved mixed forest; (3) Pseudotsuga forrestii evergreen coniferous forest; (4) Pseudotsuga forrestii - Abies georgei var. smithii evergreen coniferous forest. P. forrestii forests are characterized by both warm temperate and temperate affinities. Simpson diversity, Pielou evenness, Shannon–Wiener diversity indices ranged from 0.75 to 0.76, 0.74–0.81, and 1.62–1.93, respectively, with no significant differences among the four forest types. The forest stratification was multilayered. The canopy layer was generally 10–25 m tall, with the emergent layer reached 25–42 m. DBH and age structures of P. forrestii showed multimodal distributions. Its maximum age P. forrestii was 570 years with a DBH of 143 cm. The growth of annual ring width of P. forrestii was slow, and generally decreased with age, whereas the basal area at the breast height increased with age. Established seedlings/saplings were mainly found in unstable micro-habitats. Regeneration of P. forrestii depends on moderate natural disturbances. Finally, we provide recommendations for P. forrestii conservation.

Key words: Pseudotsuga forrestii, Community structure, Species diversity, Population structure, Regeneration, Growth trend

Cindy Q. Tang, Shi-Qian Yao, Peng-Bin Han, Jian-Ran Wen, Shuaifeng Li, Ming-Chun Peng, Chong-Yun Wang, Tetsuya Matsui, Yong-Ping Li, Shan Lu, Yuan He. Forest characteristics, population structure and growth trends of threatened relict Pseudotsuga forrestii in China[J]. Plant Diversity, 2023, 45(04): 422-433.

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Forest characteristics, population structure and growth trends of threatened relict Pseudotsuga forrestii in China

Forest characteristics, population structure and growth trends of threatened relict Pseudotsuga forrestii in China

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