A quantitative study on “threaten land effect” of shelterbelt

Bao Qing; Ren Qingshan

doi:10.1007/BF02874896

Journal of Forestry Research ›› 1992, Vol. 3 ›› Issue (1) : 106 -112. DOI: 10.1007/BF02874896

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A quantitative study on “threaten land effect” of shelterbelt

Bao Qing ¹
, Ren Qingshan ²

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Abstract

The paper studied and analyzed the threaten land effect of shelterbelt using a quantitative method. A series of effect indices and their calculative methods were put forward. These indices included threaten land height, threaten land angle, useful distance of threaten land or implanting (unsowing) distance, and rate of threaten land, etc.

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Bao Qing, Ren Qingshan. A quantitative study on “threaten land effect” of shelterbelt. Journal of Forestry Research, 1992, 3(1): 106-112 DOI:10.1007/BF02874896

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References

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[1]	Cao Xinsun. A Research Survey about Farmland Protective Plantation in External. 1981, Beijing: Science Press, 1 1

[2]	Cao Xinsun. Farmland Protective Plantation. 1985, Beijing: Chinese Forestry Press

[3]	Xiang Kaifu. Protective Plantation Research. 1989, Harbin: Northeast Forestry University Press, 1 1

[4]	Xiang Kaifu. Protective Plantation Technology. 1990, Harbin: Northeast Forestry University Press

[5]	Zhang Zhenyuan, A Research on Threaten Land Problems of Farmland Protective Plantation, 1982, Forestry Science and Technology in Liaoning Province (total 309).