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白鹤中途停歇地主要食物藨草球茎密度的空间插值方法研究
引用本文:刘春悦,江红星,孙效维,邹畅林,王波,钱法文,吕宪国.白鹤中途停歇地主要食物藨草球茎密度的空间插值方法研究[J].动物学杂志,2013,48(3):382-390.
作者姓名:刘春悦  江红星  孙效维  邹畅林  王波  钱法文  吕宪国
作者单位:1. 中国科学院东北地理与农业生态研究所 长春 130012
2. 中国科学院东北地理与农业生态研究所 长春 130012;中国林业科学研究院森林生态环境与保护研究所国家林业局森林保护学重点实验室 北京 100091
3. 吉林莫莫格国家级自然保护区管理局 镇赉137000
4. 中国林业科学研究院森林生态环境与保护研究所国家林业局森林保护学重点实验室 北京 100091
基金项目:中国林业科学研究院森林生态环境与保护研究所所长基金项目(No.CAFRIFEEP201001)
摘    要:扁杆藨草(Scirpus planiculmis)和三江藨草(S.nipponicus)的球茎是迁徙白鹤(Grus leucogeranus)在莫莫格中途停歇地的主要食物。2010年9月15~25日,对莫莫格白鹤集中停歇地鹅头泡湿地的20条样线上100 m等间隔470个取样点进行了地下0~20 cm的藨草球茎的取样工作。基于此,采用反距离权重、4种径向基函数和普通克里格共6种空间插值方法模拟了该区域藨草球茎密度。交叉验证和插值结果的空间分布图对比,径向基函数中的张力样条插值效果最佳,是最适于该区域挺水植物藨草球茎密度的空间插值方法。张力样条插值结果表明:研究区内藨草球茎密度均值为(46.0±44.3)个/m2。其中,<25个/m2的面积占研究区的41.7%,25~100个/m2的面积占45.9%,而>100个/m2的面积仅占12.4%。研究结果为下一步分析白鹤迁徙种群与环境因子的生态关系、预测该地区白鹤的环境容纳量提供十分重要的基础数据。

关 键 词:莫莫格鹅头泡湿地  白鹤  藨草球茎  空间插值  张力样条
收稿时间:2012/10/23 0:00:00
修稿时间:1/5/2013 12:00:00 AM

Comparison of the spatial interpolation methods for the tuber density of two Scirpus species: main food of Siberian cranes at the stopover site
LIU Chun-Yue,JIANG Hong-Xing,SUN Xiao-Wei,ZHOU Chang-Lin,WANG Bo,QIAN Fa-Wen and L&#; Xian-Guo.Comparison of the spatial interpolation methods for the tuber density of two Scirpus species: main food of Siberian cranes at the stopover site[J].Chinese Journal of Zoology,2013,48(3):382-390.
Authors:LIU Chun-Yue  JIANG Hong-Xing  SUN Xiao-Wei  ZHOU Chang-Lin  WANG Bo  QIAN Fa-Wen and L&#; Xian-Guo
Institution:Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Sciences, Changchun 130012;Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Sciences, Changchun 130012;Research Institute of Forest Ecology, Environment and Protection, Key Laboratory of Forest Protection of State Forestry Administration, Chinese Academy of Forestry, Beijing 100091;Momoge National Nature Reserve of Jilin, Zhenlai 137000, China;Momoge National Nature Reserve of Jilin, Zhenlai 137000, China;Momoge National Nature Reserve of Jilin, Zhenlai 137000, China;Research Institute of Forest Ecology, Environment and Protection, Key Laboratory of Forest Protection of State Forestry Administration, Chinese Academy of Forestry, Beijing 100091;Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Sciences, Changchun 130012
Abstract:The tubers of Scirpus planiculmis and S.nipponicus are the main food for migratory Siberian Cranes Grus leucogeranus at the Momoge National Natural Reserve (MNNR) of Jilin Province, Northeastern China. During 15-25 September 2010, we sampled tubers of these two species at 470 points evenly distributed at 100 m intervals along 20 transect lines at Etoupao wetland, the area of the highest concentration of migratory Siberian cranes at MNNR. Six different methods of spatial interpolation including inverse distance weighting (IDW), four radial basis functions (RBF) and ordinary kriging (OK) were employed to simulate the Scirpus tuber density in the study area based on the field sampling data. According to the results of the cross-validation and spatial distribution, the spline with tension of RBF is the most optimized method with the highest accuracy. The results of this method showed that the mean tuber density was 46.0±44.3 no./m2. Areas with tuber densities < 25, 25-100, and > 100 /m2 occupied 41.7%, 45.9% and 12.4% of the study area, respectively. The results provide basic, yet critical, data for determining the relationship between Siberian cranes and tuber availability, and predicting the environmental capacity of Etoupao wetland for supporting migratory Siberian cranes.
Keywords:Etoupao wetland of Momoge  Siberian Crane (Grus leucogeranus)  Scirpus tuber  Spatial interpolation  Spline with tension
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