基于地形因子的千米尺度景观生态廊道布局研究
Kilometer-scale layout of ecological landscape corridors based on terrain factors
查看参考文献26篇
|
文摘
|
土地利用类型并不是景观类型唯一的描述方式,生态服务价值的估算和地形指标的纳入更有助于反映景观的空间差异性。应用地形因子与生态价值两类指标,对关中-天水经济区1km栅格尺度下生态廊道空间布局形式进行研究,结果如下:①相关性分析表明地形因子对生态价值分布有重要影响,经过统一阈值的脊线谷线提取发现,对生态价值提取出的高值或低值区域几乎同时也是地形上的山脊线或山谷线,过渡带基本重合;②提取山脊生态高值区域作为生境斑块,通过最大生态阻力进行方向选择,可得出研究区生态廊道空间布局,由于廊道宽度可根据物种类型调整,同时距离较短导致实现难度低,增删节点与斑块不影响周边网络的拓扑关系,因此结果应用性相对更强;③采用地形和生态服务价值作为衡量指标,更能体现以像元为单位的景观功能一致性与差异性,从而也避免了土地利用分类较粗、生境判断难度较大、相同阻力路径过多等一系列问题。本文结果是对千米尺度廊道布局的有效补充。 |
|
其他语种文摘
|
Landscape ecological corridor planning is an important method to protect biodiversity. Land use type is not the only index to describe landscape forms. Taking the estimation of ecological service value as well as terrain index into account helps better reflect the spatial variations of landscapes. In this paper, based on ecological service value and terrain factors, the layout of ecological landscape corridors in Guan-Tian economic region is analyzed with a grid resolution of 1 km. The results are shown as follows: (1) Correlation analysis shows that terrain factors have a significant impact on the distribution of ecological value. When the ridges and valleys are extracted using the unified threshold, it is found that the areas with high or low ecological values are ridges or valleys of the terrain as well; the transition zones superimpose very well. (2) The ridges with high ecological value are extracted as habitat patches, then the layout of ecological corridors is modeled in space by choosing the direction through the areas with the biggest ecological resistance. Since the corridor width can be adjusted based on the species types, the relatively short length of the corridors makes it easier to construct, and adding or removing nodes and patches doesn’t affect the topological relationship between each corridor and the surrounding network, the applicability of the modeling results is relatively high. (3) As mentioned above, using ecological service value and terrain factors help better reflect the similarities and differences of the landscape functions of the pixel unit, and also helps avoid the problems such as land use classifications being too broadly defined, identifications of habitat patches being too difficult, and the paths with similar ecological resistance being too many, etc. All in all, the work presented in this paper is an effective supplement to the design of ecological corridors in a kilometer scale, and at the same time, demonstrates the necessity to develop the methods for the studies of ecological aspects of the landscapes in specific regions, under the background of dramatic differences of the geographic features between the east and the west of China. |
|
来源
|
地理科学进展
,2013,32(2):298-307 【核心库】
|
|
关键词
|
景观
;
廊道
;
地形
;
生态服务价值
;
关中—天水经济区
|
|
地址
|
1.
西北大学城市与环境学院, 西安, 710127
2.
陕西师范大学旅游与环境学院, 西安, 710062
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
1007-6301 |
|
学科
|
自然地理学 |
|
基金
|
国家自然科学基金项目
|
|
文献收藏号
|
CSCD:4763834
|
参考文献 共
26
共2页
|
|
1.
Adriaensen F. The application of 'least-cost' modeling as a functional landscape model.
Landscape and Urban Planning,2003,64(4):233-247
|
CSCD被引
101
次
|
|
|
|
|
2.
Andreassen H P. Optimal width of movement corridor for root voles: Not to narrow and not too wide.
Journal of Applied Ecology,1996,33(1):63-70
|
CSCD被引
6
次
|
|
|
|
|
3.
蔡婵静. 武汉市绿色廊道景观格局.
生态学报,2006,26(9):2996-3004
|
CSCD被引
13
次
|
|
|
|
|
4.
陈东立. 中国森林生态系统水源涵养功能分析.
世界林业研究,2005,18(1):49-54
|
CSCD被引
54
次
|
|
|
|
|
5.
陈利顶. “源”“汇”景观理论及其生态学意义.
生态学报,2006,26(5):1444-1449
|
CSCD被引
217
次
|
|
|
|
|
6.
陈利顶. 景观生态学中的格局分析：现状、困境与未来.
生态学报,2008,28(11):5521-5531
|
CSCD被引
155
次
|
|
|
|
|
7.
董治宝. 建立小流域风蚀量统计模型初探.
水土保持通报,1998,18(5):55-62
|
CSCD被引
37
次
|
|
|
|
|
8.
封志明. 中国地形起伏度及其与人口分布的相关性.
地理学报,2007,62(10):1073-1082
|
CSCD被引
172
次
|
|
|
|
|
9.
Forman R T T.
Landscape ecology,1986:121-155
|
CSCD被引
14
次
|
|
|
|
|
10.
靳芳. 中国森林生态系统服务功能及其价值评价.
应用生态学报,2005,16(8):1531-1536
|
CSCD被引
115
次
|
|
|
|
|
11.
孔繁花. 济南城市绿地生态网络构建.
生态学报,2008,28(4):1711-1719
|
CSCD被引
107
次
|
|
|
|
|
12.
李晶.
3S支持下土地利用生态效益时空差异与生态安全评价:以陕北黄土高原为例,2006
|
CSCD被引
1
次
|
|
|
|
|
13.
李晶. 基于GIS的陕北黄土高原土地生态系统固碳释氧价值评价.
中国农业科学,2011,44(14):2943-2950
|
CSCD被引
32
次
|
|
|
|
|
14.
罗坤. 崇明岛绿色河流廊道景观格局.
长江流域资源与环境,2009,18(10):908-913
|
CSCD被引
7
次
|
|
|
|
|
15.
Ockinger E. Do corridors promote dispersal in grass land butterflies and other insects.
Landscape Ecology,2008,23(1):27-40
|
CSCD被引
2
次
|
|
|
|
|
16.
欧阳志云. 生态系统服务功能及其生态经济价值评价.
应用生态学报,1999,10(5):635-640
|
CSCD被引
612
次
|
|
|
|
|
17.
欧阳志云. 海南岛生态系统生态调节功能及其生态经济价值研究.
应用生态学报,2004,15(8):1395-1402
|
CSCD被引
109
次
|
|
|
|
|
18.
秦嘉励. 岷江上游典型生态系统水源涵养量及价值评估.
应用与环境生物学报,2009,5(4):453-458
|
CSCD被引
26
次
|
|
|
|
|
19.
汤国安.
ArcGIS地理信息系统空间分析实验教程,2007
|
CSCD被引
11
次
|
|
|
|
|
20.
谢高地. 青藏高原生态资产的价值评估.
自然资源学报,2003,18(2):189-196
|
CSCD被引
1395
次
|
|
|
|
|
了解气象卫星更多信息，请访问