Effects of Different Disturbance Degree on the Plant Characteristic Values and  Community Species Diversity in Closure Area

MENG Li-meng; ZHANG Ke-bin; LIU Jian; CHEN Ming

In order to study the effects of different disturbance degree on the plant characteristic values and species diversity, quadrat method was used to investigate plant growth during the growing season (Jun. and Aug. ) from 2007 to 2009 in three sample plots with different disturbance degree in the fencing area of Yanchi County, Ningxia Hui Autonomous Region. The result shows that the plant characteristic values in the external fencing area with light disturbance are high but the community species diversity is relatively low, whereas in the non-fencing area with the highest disturbance degree, the species diversity is high and plant characteristic values are low. In the core zone of the fencing area with no disturbance, the species diversity is high and the plant characteristic values are between the other two areas, but the species diversity in this community is gradually decreased with prolonging the enclosure time.

Effects of Different Disturbance Degree on the Plant Characteristic Values and Community Species Diversity in Closure Area

1. College of Soil and Water Conservation, Beijing Forestry University, Key Laboratory of Soil and Water Conservation & Desertification, Ministry of Education, Beijing 100083, China

Received Date: 2010-03-06

Abstract: In order to study the effects of different disturbance degree on the plant characteristic values and species diversity, quadrat method was used to investigate plant growth during the growing season (Jun. and Aug. ) from 2007 to 2009 in three sample plots with different disturbance degree in the fencing area of Yanchi County, Ningxia Hui Autonomous Region. The result shows that the plant characteristic values in the external fencing area with light disturbance are high but the community species diversity is relatively low, whereas in the non-fencing area with the highest disturbance degree, the species diversity is high and plant characteristic values are low. In the core zone of the fencing area with no disturbance, the species diversity is high and the plant characteristic values are between the other two areas, but the species diversity in this community is gradually decreased with prolonging the enclosure time.

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Effects of Different Disturbance Degree on the Plant Characteristic Values and Community Species Diversity in Closure Area

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