典型地貌景观指数的多尺度效应分析 ——以山西省运城市为例
收稿日期: 2011-12-01
修回日期: 2012-05-27
网络出版日期: 2012-06-25
基金资助
山西省自然科学基金项目"山西省涑水河流域土地覆盖与生态环境演变过程研究"(2008011061-1)。
Analysis of Multi-scale Effect of Landscape Indices of Classical Landforms in Yuncheng City,Shanxi Province
Received date: 2011-12-01
Revised date: 2012-05-27
Online published: 2012-06-25
景观指数作为定量描述景观特征的指数,具有明显的尺度效应。进行景观指数的尺度效应研究,对进一步理解格局与尺度之间的关系具有重要意义。本文以TM影像为基础,选择山西省运城市平原、丘陵、山地及综合地貌4种不同地貌类型,对7个常用景观指数进行了多尺度效应分析。结果表明:不同地形上斑块密度(PD)、景观形状指数(LSI)、结合度(COHESION)3个指数有明显的粒度效应,随粒度的增加呈现逐渐减少的变化趋势;最大斑块指数(LPI)、周长面积比分维数(PAFRAC)、景观聚集度(CONTAG)和Shannon多样性指数(SHDI)4个指数随粒度的增加几乎不发生变化。不同地貌的景观指数随幅度的变化规律比较复杂,景观形状指数(LSI)随幅度的增加呈现逐渐增加的趋势,其余6个指数在较小幅度范围内变化比较复杂,但随着幅度的增大有逐渐趋于平稳的趋势。针对研究区不同地貌类型,其景观指数在不同粒度和幅度下有较大区别,可以根据景观指数值的大小来区分地貌的复杂程度。
毕如田, 高艳 . 典型地貌景观指数的多尺度效应分析 ——以山西省运城市为例[J]. 地球信息科学学报, 2012 , 14(3) : 338 -343 . DOI: 10.3724/SP.J.1047.2012.00338
Landscape indices,as quantitative description to landform characteristics,have obvious scale effect and have being used widely. Researches on the scale effect of landscape indices have important significance in understanding the relationship between pattern and scale of landforms. Based on TM images,we choose four different geomorphologic types,i.e. plain,hill,mountain and complex landform in Yuncheng City,Shanxi Province,and seven landscape indices to analyze the multi-scale effects. Firstly,we did the resample from landform images to get ten grain sizes and twelve extent sizes; secondly,according to the response curves of landscape indices of different grain and extent sizes to the four landforms,we analyzed the grain effect and extent effect of seven common landscape indices. The result showed that: patch density (PD),landscape shape index (LSI),patch cohesion index (COHESION) show a gradual downward trend with increasing of grain size with different geomorphologic types,largest patch index (LPI),perimeter-area fractal dimension (PAFRAC),landscape contagion (CONTAG) and Shannon diversity index (SHDI) have no significant changes. All landscape indices showed complicate changes with the changed spatial extent in different geomorphologic types. Landscape shape index (LSI) gradually declined with the increasing spatial extent,the other landscape indices curve changed rather complicatedly in the smaller spatial extent and showed no significant changes in the larger spatial extent. In addition,according to the different landforms,the landscape indices have obvious distinction in different grain and extent sizes,so we can distinct the complexity of different landforms by landscape indices.
Key words： landscape indices; grain size; landform; extent; scale effect
[1] 岳文泽,徐建华,谈文琦,等. 城市景观多样性的空间尺度分析[J]. 生态学报,2005,25(1): 122-128.
[2] Wu J. Scale and scaling: A cross-disciplinary perspective[M]. In: Wu J and Hobbs R (eds). Key Topics in Landscape Ecology. Cambridge: Cambridge University Press,2007,115-118.
[3] 申卫军,邬建国,林永标,等. 空间粒度变化对景观格局分析的影响[J]. 生态学报,2003,23(12):2506-2519.
[4] Wu J,SHEN W,SUN W,et al. Empirical patterns of the effects of changing scale on landscape metrics[J]. Landscape Ecology,2002,17(8): 761-782.
[5] Wu J. Effects of changing scale on landscape pattern analysis: scaling relations [J]. Landscape Ecology,2004,19(2): 125-138.
[6] 李明杰,钱乐祥,夏丽华,等. 汕头市土地利用景观指数粒度效应初探[J]. 地理与地理信息科学,2008,24(6): 93-96.
[7] 时嘉凯,陈东辉,陈亮. 上海市青浦区景观格局的粒度效应分析[J]. 长江流域资源与环境,2007,16(Z2): 26-32.
[8] 杨丽,甄霖,谢高地,等. 泾河流域景观指数的粒度效应分析[J]. 资源科学,2007,29(2): 183-187.
[9] 李小马,刘常富. 景观格局指数的粒度效应——以沈阳城市森林为例[J]. 西北林学院学报,2009,24(2): 166-170.
[10] 赵文武,傅伯杰,陈利顶. 景观指数的粒度变化效应[J]. 第四纪研究,2003,23(3): 326-333.
[11] 游丽平,林广发,杨陈照,等. 景观指数的空间尺度效应分析[J]. 地球信息科学,2008,10(1): 74-79.
[12] 申卫军,邬建国,任海,等. 空间幅度变化对景观格局分析的影响[J]. 生态学报,2003,23(11): 2219-2231.
[13] 龚建周,夏北成. 区域土地覆被景观特征的幅度效应及其变异规律[J]. 资源科学,2007,29(4): 97-102.
[14] 沈泽昊,张新时,金义兴. 地形对亚热带山地景观尺度植被格局影响的梯度分析[J]. 植物生态学报,2000,24(4): 430-435.
[15] 朱明,徐建刚,李建龙,等. 上海市景观格局梯度分析的空间幅度效应[J]. 生态学杂志,2006,25(10): 1214-1217.
[16] 高艳,毕如田. 涑水河流域景观指数的粒度效应[J]. 中国农学通报,2010,26(13): 396-400.
[17] 高艳,毕如田,曹毅. 空间粒度变化及土地利用分类对景观指数的影响[J]. 中国生态农业学报,2010,18(5): 1076-1080.
[18] 陈文波,肖笃宁,李秀珍. 景观指数分类、应用及构建研究[J]. 应用生态学报,2002,13(1): 121-125.
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