祁连山北坡青海云杉林生境特征分析
收稿日期: 2009-04-19
修回日期: 2009-09-16
网络出版日期: 2010-01-25
基金资助
国家自然科学基金项目(30770387; 40671067); 国家环境保护公益性资助项目(200809098)
Analysis of the Niche Space of Picea crassifolia on the Northern Slope of Qilian Mountains
Received date: 2009-04-19
Revised date: 2009-09-16
Online published: 2010-01-25
Supported by
Nation Natural Science Foundation of China, No.30770387; No.40671067; National Environmental Protection Commonweal Project of China (NEPCP), No.200809098
青海云杉林分布格局深受环境影响,量化其分布与环境之间的关系对该种群管理、恢复与重建具有重要的意义,但目前仍然缺乏量化研究成果。本研究选择祁连山北坡青海云杉林为研究对象,以数字高程模型(digital elevation model,DEM)和青海云杉林分布图为基础数据,利用地理信息系统(GIS)空间分析方法,着重量化分析祁连山青海云杉林的生态幅度和地形特征,得出祁连山北坡青海云杉生境的气候边界函数,并界定青海云杉林分布的海拔、坡度以及坡向范围。该项研究目的在于数量化表达青海云杉林空间分布的气候和地形幅度,为退耕退牧还林提供科学支撑,为气候变化条件下青海云杉林的响应研究奠定基础。
赵传燕; 别强; 彭焕华 . 祁连山北坡青海云杉林生境特征分析[J]. 地理学报, 2010 , 65(1) : 113 -121 . DOI: 10.11821/xb201001012
The distribution of Picea crassifolia is affected by environmental conditions.Quantifying evaluation of the relationship between the distribution of Picea crassifolia and its habitat is significant for managing and restoring the damaged forest ecosystem,but there has been a lack of effective methods for quantitative evaluation.The northern slope of Qilian Mountains in Northwest China was selected as the study area and Picea crassifolia,the dominant species in the study area,was the core of the study.Based on digital elevation model(DEM) and inventory data of Picea crassifolia distribution,the niche space of Picea crassifolia has quantitatively been defined by the spatial analysis of geographic information system.Results show that the borders of the niche space are delineated by border functions.Generally,the niche space is July mean temperature:8.5 oC < TJuly < 14 oC,and the annual precipitation is 300 mm < Pannual < 620 mm.The range of elevation of the forest is from 2576 to 3344 m and its aspect is NNW and NNE.The range of slope of the forest is from 6o to 39o.The relationship between the slope and distribution frequency of Picea crassifolia is fit for Gauss function.
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