Effects of Slopes on Chinese Pine Growth in Mountain Areas of Northern Hebei

doi:10.13466/j.cnki.lyzygl.2019.04.004

Abstract

Abstract:

In order to understand the influence of slope position on the growth of Chinese pine(Pinus tabuliformis),the Chinese pine forests located in the slope and slope top were investigated,in the northern mountain area of Hebei province.The results showed that the annual growth,average growth and total growth of Chinese pine on the slope were significantly higher than that on the slope top,and the difference between them was about 9cm for average growth,but the topography had no significant effect on the growth of DBH.Under the two topographic conditions,the annual growth of tree height was relatively stable with the increase of age,while the annual growth of DBH increased ten years ago,then decreased,and dropped to the lowest around 20 years.The interannual variability for growth of height and DBH of Chinese pine showed obvious synchronicity under two topographic conditions,indicating that the growth of height and DBH of Chinese pine was sensitive to interannual climate change.There was a higher correlation between the annual height growth of Chinese pine and the DBH growth of the previous year,indicating that the climatic conditions of the previous year had a significant influence on the annual height growth of Chinese pine.The height growth of Chinese pine was mainly affected by topography and climate,while the DBH growth was affected by stand factor and climate.The slope topography is more suitable for the growth of Chinese pine,and Chinese pine forest located on the slope can be used to cultivate high-quality wood,and Chinese pine forests distributed on the top of the slope should be used as ecological forests for protection and management.

Key words: mountain area in northern Hebei Province, slope position, Chinese pine, growth, climate

CLC Number:

S718.5

LI Xiao, JIANG Lingling, XU Zhongqi, JIA Yanlong, MA Rong. Effects of Slopes on Chinese Pine Growth in Mountain Areas of Northern Hebei[J]. FOREST RESOURCES WANAGEMENT, 2019, 0(4): 24-30.

Figures/Tables 14

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标准地号	地点	海拔/m	坡向	坡度	年龄/a	林分密度/(株/hm²)
1	北泉沟坡面	1149.5	NW55°	15°	58	583
2	北泉沟坡顶	1245.0	SE40°	17°	37	400
3	水泉沟坡面	1106.0	NE43°	16°	52	367
4	水泉沟坡顶	1231.0	SW17°	18°	37	500
5	东大坡坡面	1016.7	NW79°	24°	40	1367
6	东大坡坡顶	1075.5	NW80°	13°	39	1117

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