Growth Status of Artificial Black Locust Forest with Different Densities in the Hilly and Gully Area of Western Shanxi Province

GUO Jian-bin; ZHAO Zhi-feng; LUO Han

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Growth Status of Artificial Black Locust Forest with Different Densities in the Hilly and Gully Area of Western Shanxi Province

- Growth Status of Artificial Black Locust Forest with Different Densities in the Hilly and Gully Area of Western Shanxi Province
- Bulletin of Soiland Water Conservation Vol. 29, Issue 1, Pages: 80-84(2010)
- 作者机构：
  
  1. 水土保持与荒漠化防治教育部重点实验室北京林业大学水土保持学院,北京,100083
  2. 甘肃省水土保持科学研究所,甘肃,兰州,730020
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- Published：2010
- 稿件说明：
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GUO Jian-bin, ZHAO Zhi-feng, LUO Han. Growth Status of Artificial Black Locust Forest with Different Densities in the Hilly and Gully Area of Western Shanxi Province[J]. Bulletin of Soiland Water Conservation, 2010, 29(1): 80-84.
DOI：

GUO Jian-bin, ZHAO Zhi-feng, LUO Han. Growth Status of Artificial Black Locust Forest with Different Densities in the Hilly and Gully Area of Western Shanxi Province[J]. Bulletin of Soiland Water Conservation, 2010, 29(1): 80-84. DOI：

摘要

通过对山西省方山县土桥沟流域刺槐人工林植被生长指标的比较研究

分析了不同密度刺槐人工林的生长状况

以期为该区刺槐人工林的经营管理提供理论依据和技术支持。研究结果表明

同是林龄为20a的刺槐人工林

高密度林分内林木的树高、冠幅等生长指标值

均比低密度林分内的低

但郁闭度要比低密度林分高;密度大的林分胸径普遍较小

随着林分密度的降低

胸径逐渐增大。刺槐林下灌木层和草本层植被的平均高度、盖度、生物量、物种丰富度都随着林分密度的降低而升高;各林分林下植被层的含水量也存在着随林分密度的降低而升高的趋势。从人工林的生长状况来看

晋西半干旱黄土丘陵沟壑区刺槐人工林的适宜密度为1667株/hm

。

Abstract

The growth indexes of artificial black locust forest with different densities in the hilly and gully area of Western Shanxi Province are studied.The purpose is to provide theory and practice evidences for plantation management in the area.Results show that in the same stand age (20a)

the values of various growth indexes in higher density forest is lower than those in lower density forest

such as tree height and crown width.However

the value of canopy density is higher than that in lower density forest.The DBH (diameter at breast height) of higher density forest is generally smaller and the DBH increases gradually with the decreased forest density.In the shrub layer and herb layer under different stand densities

plant average height

vegetation coverage

biomass

and species richness all decrease as the stand density increases.Soil water content in the undergrowth vegetation is higher in lower density than that in higher density.In the hilly and gully area of the loess plateau in Western Shanxi Province

the suitable stand density of artificial black locust forest is 1 667 stands/hm2.

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