Forest nutrient input from rainfall in southern Sichuan

JIANG Jun-ming; FEI Shi-min; WEI Shi-jun; ZHUWei-shuang; WANG Shuai

Volume 24 Issue 1

Feb. 2017

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JIANG Jun-ming, FEI Shi-min, WEI Shi-jun, ZHUWei-shuang, WANG Shuai. Forest nutrient input from rainfall in southern Sichuan[J]. Journal of Zhejiang A&F University, 2007, 24(1): 22-27.

Citation:

JIANG Jun-ming, FEI Shi-min, WEI Shi-jun, ZHUWei-shuang, WANG Shuai. Forest nutrient input from rainfall in southern Sichuan[J]. Journal of Zhejiang A&F University, 2007, 24(1): 22-27.

Forest nutrient input from rainfall in southern Sichuan

1.
Sichuan Academy of Forestry, Chengdu 610081, Sichuan, China;
2.
Forest Enterprise of Changning County,Changning 614000, Sichuan, China

Funds:

十五国家科学技术攻关专题(2002BA516A17-08)

Received Date: 2006-01-13
Rev Recd Date: 2006-06-05
Publish Date: 2007-02-20

Abstract

In silviculture, timber cutting(nutrient output) has been studied extensively, whereas nutrient input (fertilization) has been ignored. This has led to unbalanced nutrient concentrations in soil ecosystems as well as acidic and barren soils. In southern Sichuan, an important tree plantation base in China, rainfall is the main nutrientinput source for the forest system. Results of a rainfall input analysis indicated that pH increased with rainfall, was slightly acidic with light rain, and was neutral with medium and heavy rain. Also, N, P, K, Mg and Si decreased with rainfall in the order of: Ca N K Mg P Si. The 52.26 kghm- 2a- 1 of nutrient input from rainfall in the forestsof southernSichuanwas partitioned as: N12.39 kghm- 2a- 1, P0.84 kghm- 2a- 1, K 12.27 kghm- 2a- 1, Ca 23.90 kghm- 2a- 1, Mg 2.53 kghm- 2a- 1, and Si 0.33 kghm- 2a- 1 with nutrients higher than average. In addition, the annual Si input from rainwas 1.2%- 5.5% of the Si output of timber.[Ch, 4 tab. 16 ref.]
- forest ecology,
- rainfall,
- nutrient input,
- southern Sichuan

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

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Forest nutrient input from rainfall in southern Sichuan

1. Sichuan Academy of Forestry, Chengdu 610081, Sichuan, China;

2. Forest Enterprise of Changning County,Changning 614000, Sichuan, China

Funds:

十五国家科学技术攻关专题(2002BA516A17-08)

Received Date: 2006-01-13

Rev Recd Date: 2006-06-05

Publish Date: 2007-02-20

Key words:

Abstract: In silviculture, timber cutting(nutrient output) has been studied extensively, whereas nutrient input (fertilization) has been ignored. This has led to unbalanced nutrient concentrations in soil ecosystems as well as acidic and barren soils. In southern Sichuan, an important tree plantation base in China, rainfall is the main nutrientinput source for the forest system. Results of a rainfall input analysis indicated that pH increased with rainfall, was slightly acidic with light rain, and was neutral with medium and heavy rain. Also, N, P, K, Mg and Si decreased with rainfall in the order of: Ca N K Mg P Si. The 52.26 kghm- 2a- 1 of nutrient input from rainfall in the forestsof southernSichuanwas partitioned as: N12.39 kghm- 2a- 1, P0.84 kghm- 2a- 1, K 12.27 kghm- 2a- 1, Ca 23.90 kghm- 2a- 1, Mg 2.53 kghm- 2a- 1, and Si 0.33 kghm- 2a- 1 with nutrients higher than average. In addition, the annual Si input from rainwas 1.2%- 5.5% of the Si output of timber.[Ch, 4 tab. 16 ref.]

Forest nutrient input from rainfall in southern Sichuan

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Related

Proportional views