LIN Yiling,MA Changdi,LIU Jiping.Landscape Naturality and Dynamic Change in the Western Songnen Plain[J].Research of Soil and Water Conservation,2020,27(01):227-232,239.
松嫩平原西部景观自然性评价及动态变化
- Title:
- Landscape Naturality and Dynamic Change in the Western Songnen Plain
- 文章编号:
- 1005-3409(2020)01-0227-06
- 分类号:
- P901
- 文献标志码:
- A
- 摘要:
- 为探究松嫩平原西部未受人类干扰的程度,以松嫩平原西部为研究区域,基于“3S”技术,在PSR模型的基础上构建了包括13个指标的评价体系,结合层次分析法和信息熵模型定量评价了松嫩平原西部1985—2015年的景观自然性特征,并分析其动态变化规律及空间聚集性特征。结果表明:1985—2015年,松嫩平原西部整体的景观自然性下降了14%,呈先快后慢的下降趋势,造成景观自然性下降的主要原因是压力指标上升了56%和响应指标下降了9.07%。自然景观比例是对景观自然性影响最大的因子,其权重为0.176。自然保护区的景观自然性高于城市地区,且以扎龙国家级保护区为代表的部分保护区景观自然性呈不断上升状态。松嫩平原西部景观自然性的空间自相关结果南北差异较大,高—高自相关类型主要集中在研究区北部,低—低自相关类型主要集中在研究区南部。
- Abstract:
- In order to explore the extent undisturbed by human in the Western Songnen Plain, this paper took the Western Songnen Plain as research area, and constructed an evaluation system of including 13 indexes on the basis of the PSR model based on 3S technology, combined with AHP and Shannon’s Entropy model to quantitatively evaluate the feature of landscape naturality in the Western Songnen Plain from 1985 to 2015, and analyzed the dynamic change and feature of spatial aggregation. The results showed that from 1985 to 2015, the landscape naturality in the Western Songnen Plain decreased by 14% and presented the tendency of fast decline at first and then slow decrease, the two main reasons for the decline of landscape naturality were that pressure indicators increased by 56% and response indicator decreased by 9.07%. The proportion of nature landscape was the most important factor on landscape naturality and its weight was 0.176. The landscape naturality of the nature reserve was higher than urban area. Moreover, the landscape naturality in some natural reserves represented by Zhalong National Natural Reserve presented the constant increasing tendency. The spatial autocorrelation of landscape naturality in research area had a big difference between north and south, that is, the high-high autocorrelation mainly concentrated in the north of the research area, while the low-low autocorrelation mainly concentrated in the south of the research area.
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备注/Memo
收稿日期:2019-01-25 修回日期:2019-04-04
资助项目:吉林省科技发展计划项目(20180101085JC);吉林省社会科学资助项目(2018B175);吉林师范大学研究生科研创新计划项目(研创新201924)
第一作者:林奕伶(1996—),女,吉林双辽人,硕士研究生,主要研究方向为资源环境信息系统。E-mail:xdldg010@163.com
通信作者:刘吉平(1972—),男,山东省菏泽市人,教授,硕士生导师,主要研究方向为资源环境信息系统。E-mail:ljp@jlnu.edu.cn