摘要
在 Ａ Ｒ Ｃ／ Ｉ Ｎ Ｆ Ｏ 支持下，应用 Ｇ Ｉ Ｓ技术结合景观生态学原理，从一个侧面对关帝山林区森林景观空间分布格局进行了分析研究，提出了一套适用于森林景观空间格局分析的方法和指标，揭示了研究地区森林景观空间分布动态的一些基本规律。研究结果表明，在 Ｇ Ｉ Ｓ支持下，通过网格样方全景观取样，采用基准面积样方取值法确定样方观测值，分别景观要素计算 Ｍ ｏｒｉｓｉｔａ 指数或 Ｅ指标，可以对研究对象的空间分布特征做出客观的分析，并可通过对多期景观图层的分析比较揭示景观格局动态规律。样方大小对分析结果有显著影响，原则上应尽量小，可用景观要素斑块平均面积和标准差控制。概率分布模型拟合的方法不适用于森林景观空间格局分析。关帝山森林景观自 ５０ 年代末以来处于恢复演替进程中，森林分布范围扩大，景观质量逐步提高，３ 个时期表现出显著不同的动态特征。
Supported by ARC/INFO software,and using GIS technique and landscape ecological principles,and analyzed the forest landscape spatial pattern in Guandishan Forest Region of Shanxi Province,China.A serial method and two indices are provided to fit forest landscape pattern analysis.Some basic dynamic features of forest landscape pattern in study area are explored and explained in an aspect.Research results showed that,supported by GIS,with network grid sampling in total landscape,using Standard Area Measurement Method for the determination of investigation value in plots,landscape distribution characteristics and spatial pattern can be objectively analyzed by Morisita Index or Executive Index in study area.Landscape pattern dynamic laws can also be explored and expounded by comparing these two indices which come from multiple stages of digital landscape maps.It was also indicated that the size of network grid plot significantly affects result of landscape pattern analysis.So,it should be as small as possible in principle,but it can be controlled by mean and standard difference of studied landscape element patch size in practice.It was proved that Fitness Test of probability distribution models are not effective to analyze forest landscape spatial pattern.It was presented that,since the end of 1950s,the landscape in study area has been in a restoring succession process,forest distribution range has being expanded gradually,and landscape quality has being grow up,zonal distribution pattern of forest types gradually set up.The dynamic of forest type distribution pattern in three stages presented significant different characteristics.
出处
《生态学报》
CAS
CSCD
北大核心
1999年第4期468-473,共6页
Acta Ecologica Sinica
基金
国家自然科学基金
关键词
森林景观
空间格局
景观动态
关帝山林区
forest landscape
spatial pattern
landscape dynamic
measurement of sample plot
distribution pattern index
Guandishan forest region.
