为揭示浏阳河流域的景观稳定性时空变化特征,在RS和GIS技术支持下,利用1985年、2000年和2015年遥感影像获取流域内3期土地利用/覆盖类型数据,运用景观分析方法定量分析了1985—2015年间浏阳河流域景观结构变异特征、稳定性变化特征及景观稳定性与景观类型的相关关系。结果表明:①在1985—2015年间,浏阳河流域景观总体结构的时间变化特征为破碎化度、斑块边缘复杂度和景观多样性先增加后降低,人类干扰强度和景观团聚程度先降低后增加,反映出研究区景观稳定性呈先降低后增加的变化;②该流域的稳定性分布具有明显的空间分异特征,流域东部和南部稳定性较高,中部和西部稳定性较低;③不同景观类型的稳定性高值关联度从大到小的顺序为林地>耕地>人工表面>水体,低值关联度从大到小的顺序为人工表面>耕地>水体>林地;④林地是维持流域景观稳定性的关键景观;⑤社会经济和政策因素是该流域景观稳定性最重要的驱动因素,通过有效的政策调控,可以遏制和改善景观稳定性恶化的状况,为流域的管理和规划提供理论基础和决策依据。
Abstract
The aim of this study is to reveal the spatial and temporal changes of landscape stability in Liuyang River Basin. Remote sensing images of 1985, 2000, and 2015 were used to obtain the land use/cover types of three periods in the basin with the support of remote sensing and GIS technology. Hence, the landscape structure change, landscape stability, as well as the relation between them from 1985 to 2015 were analyzed by landscape analysis method. Research manifested that: 1) From 1985 to 2015, the overall landscape structure of Liuyang River Basin was characterized by increased-and-then-decreased fragmentation, patch edge complexity and landscape diversity, as well as human disturbance intensity and landscape aggregation degree in an opposite trend, implying that the landscape stability in the study area weakened but then improved. 2) The landscape stability is spatially heterogeneous, high in the east and south of the study area, while low in the middle and west. 3) The high-value correlation degree of forest land is the largest, followed by that of cultivated land, artificial surface, and water body in sequence, whereas the low-value correlation degree of artificial surface was the largest, followed by that of cultivated land, water body, and forest land in sequence. 4) Forest land is the key landscape to maintain the landscape stability of the basin. 5) Social economy and policy are the most important driving factors of landscape stability. The deterioration of landscape stability can be alleviated by effective policy regulation.
关键词
景观格局 /
景观稳定性 /
时空变化特征 /
遥感(RS) /
地理信息系统(GIS) /
浏阳河流域 /
人类活动
Key words
landscape pattern /
landscape stability /
spatial and temporal characteristics /
remote sensing /
GIS /
Liuyang River Basin /
human activities
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参考文献
[1] 许 妍,高俊峰,郭建科.太湖流域生态风险评价[J].生态学报,2013,33(9):2896-2906.
[2] 彭保发,陈端吕,李文军,等.土地利用景观格局的稳定性研究[J].地理科学,2013,33(12):1484-1488.
[3] 谢高地,甄 霖,杨 丽,等.泾河流域景观稳定性与类型转换机制[J].应用生态学报,2005,16(9):1693-1698.
[4] O'NEILL R V, RIITTERS K H, WICKHAM J D, et al. Landscape Pattern Metrics and Regional Assessment[J]. Ecosystem Health, 1999, 5(4): 225-233.
[5] 秦钰莉,颜七笙,蔡建辉.鄱阳湖湿地南部区域景观格局演变与动态模拟[J].长江科学院院报,2020,37(6):171-178.
[6] 黄 犁,徐丽萍.玛纳斯河流域绿洲时空演变及其景观格局变化[J].干旱区研究,2019,36(5):1261-1269.
[7] 吕乐婷,张 杰,彭秋志,等.东江流域景观格局演变分析及变化预测[J].生态学报,2019,39(18):6850-6859.
[8] 刘怡娜,孔令桥,肖 燚,等.长江流域景观格局与生态系统水质净化服务的关系[J].生态学报,2019,39(3):844-852.
[9] 王明宽,莫宏伟.浏阳河流域空间异质性对生态系统服务价值影响研究(英文)[J]. Journal of Resources and Ecology,2018,9(2):209-217.
[10] YACHONGTOU B,梁 婕,曾光明,等.基于SWAT模型的浏阳河流域径流对土地利用和气候变化的协同响应[J].水资源与水工程学报,2019,30(2):88-94.
[11] 于泽兴,胡国华,陈 肖,等. 近45年来浏阳河流域极端降水变化[J].水土保持研究,2017,24(5):139-143.
[12] WU J. Effects of Changing Scale on Landscape Pattern Analysis: Scaling Relations[J]. Landscape Ecology, 2004, 19(2):125-138.
[13] 布仁仓,李秀珍,胡远满,等. 尺度分析对景观格局指标的影响[J].应用生态学报,2003,14(12):2181-2186.
[14] 邬建国.景观生态学:格局、过程、尺度与等级[M]. 2版. 北京:高等教育出版社,2007.
[15] JAEGER J A G. Landscape Division, Splitting Index, and Effective Mesh Size: New Measures of Landscape Fragmentation[J]. Landscape Ecology, 2000, 15(2):115-130.
[16] 何 鹏,张会儒.常用景观指数的因子分析和筛选方法研究[J].林业科学研究,2009,22(4):470-474.
[17] RAO K S, REKHA P. Land Use Dynamics and Landscape Change Pattern in a Typical Micro Watershed in the Mid Elevation Zone of Central Himalaya, India[J]. Agriculture, Ecosystems and Environment, 2001, 86(2): 113-123.
[18] 刘吉平,马长迪.1985—2015年向海沼泽湿地斑块稳定性的空间变化[J].生态学报,2017,37(4):1261-1269.
[19] 宫兆宁,张翼然,宫辉力,等.北京湿地景观格局演变特征与驱动机制分析[J].地理学报,2011,66(1):77-88.
[20] 朱 颖,林静雅,胡义涛,等.天目湖流域景观格局时空变化及生态系统服务价值分析[J].西北林学院学报,2018,33(4):239-245.
[21] 刘延国,王 青,王 军.官司河流域土地覆被景观稳定性及其环境效应[J].水土保持研究,2012,19(3):166-169,174.
[22] 徐秋阳,王巍巍,莫 罹.京津冀地区景观稳定性评价[J].生态学报,2018,38(12):4226-4233.
[23] 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.
[24] 陈利顶,徐建英,傅伯杰,等.斑块边缘效应的定量评价及其生态学意义[J].生态学报,2004,24(9):1827-1832.
基金
国家社会科学基金项目(17BGL138);湖南省水利科技项目(湘水科计[2017]230-12);湖南省社会科学基金项目(2018YBA151)
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