干旱区研究

干旱区研究 >

2023 , Vol. 40 >Issue 2: 292 - 302

DOI: https://doi.org/10.13866/j.azr.2023.02.13

生态与环境

藏北高原砾石粒径空间异质性研究

  • 徐涛 ,
  • 于欢 ,
  • 孔博 ,
  • 邱霞 ,
  • 胡孟珂 ,
  • 凌鹏飞
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  • 1.成都理工大学地球科学学院，四川 成都 610059
    2.中国科学院水利部成都山地与灾害研究所，四川 成都 610041
    3.四川省不动产登记中心，四川 成都 610014
徐涛（1996-），男，硕士研究生，生态地理信息系统. E-mail: 1509371533@qq.com
于欢. E-mail:yuhuan0622@126.com

收稿日期: 2022-07-09

  修回日期: 2022-11-27

  网络出版日期: 2023-03-08

基金资助

国家自然科学基金项目(41971226);国家自然科学基金项目(41871357);中国科学院战略性先导科技专项(XDA19030303);中国科学院战略性先导科技专项(XDA28110503);国家重点基础研究发展规划项目：矿山环境地质灾害协同监测预警技术与装备(2017YFC1503103)

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Spatial heterogeneity of gravel size in Northern Tibetan Plateau

  • Tao XU ,
  • Huan YU ,
  • Bo KONG ,
  • Xia QIU ,
  • Mengke HU ,
  • Pengfei LING
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  • 1. School of Earth Sciences, Chengdu University of Technology, Chengdu 610059, Sichuan, China
    2. Chengdu Institute of Mountain Land and Disasters, Ministry of Water Resources, Chinese Academy of Sciences, Chengdu 610041, Sichuan, China
    3. Sichuan Real Estate Registration Center, Chengdu 610014, Sichuan, China

Received date: 2022-07-09

  Revised date: 2022-11-27

  Online published: 2023-03-08

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摘要

砾石是各种水文和侵蚀等过程综合作用的产物，是草地和土壤退化、生态系统恶化的一个标志，反过来这些砾石也影响到侵蚀的各个过程。研究藏北高原地表砾石的空间分异对区域生态环境恢复具有重要意义。本文以地表砾石粒径大小和空间位置为研究对象，通过Moran’s I指数、空间变异函数、地理探测器、回归分析等方法对其空间异质性进行系统性分析。结果表明：（1） 全局Moran’s I指数值为0.481，呈显著的正相关，局部Moran’s I指数显示，研究区东部砾石聚集模式为高-高聚集，中部为低-低聚集，其余区域多呈随机分布。（2） 砾石空间异质性由结构因素主导，但是变异函数最佳拟合模型与特征参数值均存在一定差异性，即存在一定的各向异性特征。（3） 地理探测器结果显示，NDVI、土地利用类型为影响研究区砾石粒径空间异质性的主要因素，人口密度、植被类型、年均降水为次要因素。（4） 回归分析结果显示，最优尺度回归为最佳回归模型，NDVI对砾石粒径影响最大，其后依次为土地利用类型、年均降水、植被类型。

关键词： 藏北高原; 砾石粒径; 空间异质性; 地理探测器; 回归分析

本文引用格式

徐涛 , 于欢 , 孔博 , 邱霞 , 胡孟珂 , 凌鹏飞 . 藏北高原砾石粒径空间异质性研究[J]. 干旱区研究, 2023 , 40(2) : 292 -302 . DOI: 10.13866/j.azr.2023.02.13

Abstract

Gravel is the product of various hydrological and erosion processes and is a symbol of grassland and soil degradation and ecosystem deterioration. Consequently, gravel also affects various erosion processes. Studying the spatial differentiation of gravel in the Northern Tibetan Plateau is of considerable importance for the restoration of regional ecological environments. In this paper, the size and spatial location of surface gravel were studied, and the spatial heterogeneity was systematically analyzed by Moran’s I index, spatial variogram, geographic detector, and regression analysis. The following results are presented. (1) The global Moran’s I index is 0.481, which shows a significant positive correlation. Meanwhile, the local Moran’s I index shows a high-high gravel accumulation pattern in the eastern part of the study area, low-low in the middle part, and mostly random distribution in the rest of the study area. (2) Gravel spatial heterogeneity is dominated by structural factors. However, some differences are found between the best fitting model of the variogram and the values of characteristic parameters; that is, certain anisotropy characteristics exist. (3) The geographic detector results showed that NDVI and land-use type were the main factors affecting the spatial heterogeneity of gravel size in the study area, while population density, vegetation type, and annual average precipitation were the secondary factors. (4) The results of regression analysis revealed that the optimal scale regression was the best regression model, and NDVI had the largest influence on gravel size, followed by land-use type, annual mean precipitation, and vegetation type.

Key words： Northern Tibetan Plateau; gravel size; spatial heterogeneity; geographic detector; regression analysis

参考文献

[1] 王景升, 姚帅臣, 普穷, 等. 藏北高原草地群落的数量分类与排序[J]. 生态学报, 2016, 36(21): 6889-6896.
[1] [Wang Jingsheng, Yao Shuaichen, Pu Qiong, et al. Quantitative classification and ordination of grassland communities in northern Tibetan Plateau[J]. Acta Ecologica Sinica, 2016, 36(21): 6889-6896.]
[2] 王景升, 张宪洲, 赵玉萍, 等. 羌塘高原高寒草地生态系统生产力动态[J]. 应用生态学报, 2010, 21(6): 1400-1404.
[2] [Wang Jingsheng, Zhang Xianzhou, Zhao Yuping, et al. Productivity dynamics of alpine grassland ecosystem on the Qiangtang Plateau[J]. Chinese Journal of Applied Ecology, 2010, 21(6): 1400-1404.]
[3] 水宏伟, 干珠扎布, 吴红宝, 等. 禁牧对藏北高原狼毒型退化草地群落特征及生产力的影响[J]. 草业学报, 2020, 29(10): 14-21.
[3] [Shui Hongwei, Gan Zhuzhabu, Wu Hongbao, et al. Effects of grazing prohibition on community characteristics and productivity of degraded grassland with wolfsbane in northern Tibetan Plateau[J]. Acta Prataculturae Sinica, 2020, 29(10): 14-21.]
[4] 张宪洲, 王小丹, 高清竹, 等. 开展高寒退化生态系统恢复与重建技术研究, 助力西藏生态安全屏障保护与建设[J]. 生态学报, 2016, 36(22): 7083-7087.
[4] [Zhang Xianzhou, Wang Xiaodan, Gao Qingzhu, et al. Research on the restoration and reconstruction of degraded alpine ecosystems has been carried out to help protect and build an ecological safety barrier in Tibet[J]. Acta Ecologica Sinica, 2016, 36(22): 7083-7087.]
[5] 郝爱华, 薛娴, 彭飞, 等. 青藏高原典型草地植被退化与土壤退化研究[J]. 生态学报, 2020, 40(3): 964-975.
[5] [Hao Aihua, Xue Xian, Peng Fei, et al. Study on vegetation degradation and soil degradation of typical grassland on the Qinghai-Tibet Plateau[J]. Acta Ecologica Sinica, 2020, 40(3): 964-975.]
[6] Li G Y, Mu J P, Liu Y Z, et al. Effect of microtopography on soil respiration in an alpine meadow of the Qinghai-Tibetan plateau[J]. Plant and Soil, 2017, 421: 10.1007/s11104-017-3448-x.
[7] 孙建, 王毅, 刘国华. 青藏高原高寒草地地上植物碳积累速率对生态系统多功能性的影响机制[J]. 植物生态学报, 2021, 45(5): 496-506.
[7] [Sun Jian, Wang Yi, Liu Guohua. The effect mechanism of carbon accumulation rate of above-ground plants on the multifunctionality of ecosystem in alpine grassland of Qinghai-Tibet Plateau[J]. Chinese Journal of Plant Ecology, 2021, 45(5): 496-506.]
[8] 魏宁, 于文竹, 安克俭, 等. 青藏高原高寒草原与草甸土壤可蚀性的关键因子[J]. 水土保持通报, 2021, 41(3): 87-93, 102.
[8] [Wei Ning, Yu Wenzhu, An Kejian, et al. The key factors of soil erodibility of alpine grasslands and meadows on the Qinghai-Tibet Plateau[J]. Bulletin of Soil and Water Conservation, 2021, 41(3): 87-93, 102.]
[9] Wang Q F, Jin H J, Zhang T J, et al. Hydro-thermal processes and thermal offsets of peat soils in the active layer in an alpine permafrost region, NE Qinghai-Tibet plateau[J]. Elsevier, 2017, 156(56): 1-12.
[10] Xiao P P, Zheng G G. Plateau pika disturbances alter plant productivity and soil nutrients in alpine meadows of the Qinghai-Tibetan Plateau, China[J]. The Rangeland Journal, 2017, 39(2): 133-144.
[11] 高杨, 符素华, 罗来军, 等. 砾石覆盖度测量方法研究[J]. 水土保持通报, 2013, 33(4): 264-267, 270.
[11] [Gao Yang, Fu Suhua, Luo Laijun, et al. Study on measuring method of gravel coverage[J]. Bulletin of Soil and Water Conservation, 2013, 33(4): 264-267, 270.]
[12] Okin G S, Painter T H. Effect of grain size on remotely sensed spectral reflectance of sandy desert surfaces[J]. Remote Sensing of Environment, 2004, 89(3): 272-280.
[13] 董玉祥, Namikas S L, Hesp P A. 海岸风沙流中不同粒径组沙粒的垂向分布模式[J]. 地理研究, 2009, 28(5): 1179-1187.
[13] [Dong Yuxiang, Namikas S L, Hesp P A. Vertical distribution patterns of sand particles of different particle sizes in the coastal sand flow[J]. Geographical Research, 2009, 28(5): 1179-1187.]
[14] 陈西庆, 严以新, 童朝锋, 等. 长江输入河口段床沙粒径的变化及机制研究[J]. 自然科学进展, 2007, 17(2): 233-239.
[14] [Chen Xiqing, Yan Yixin, Tong Chaofeng, et al. Study on the change and mechanism of bed sand particle size in the estuary section of the Yangtze River[J]. Progress in Natural Science, 2007, 17(2): 233-239.]
[15] Quade J. Desert pavements and associated rock varnish in the Mojave Desert: How old can they be?[J]. Geology, 2015, 29(9): 855-858.
[16] 曹晓阳, 冯益明. 噶顺戈壁地表砾石粒度特征分析[J]. 中国水土保持科学, 2016, 14(1): 46-52.
[16] [Cao Xiaoyang, Feng Yiming. Analysis of surface gravel grain size characteristics in Gaishun Gobi[J]. Science of Soil and Water Conservation, 2016, 14(1): 46-52.]
[17] 王利兵, 胡小龙, 余伟莅, 等. 沙粒粒径组成的空间异质性及其与灌丛大小和土壤风蚀相关性分析[J]. 干旱区地理, 2006, 29(5): 688-693.
[17] [Wang Libing, Hu Xiaolong, Yu Weili, et al. Spatial heterogeneity of sand particle size composition and its correlation with shrub size and soil wind erosion[J]. Arid Land Geography, 2006, 29(5): 688-693.]
[18] Shrestha A, Luo W. Analysis of groundwater nitrate contamina-tion in the Central Valley: Comparison of the geodetector method, principal component analysis and geographically weighted regres-sion[J]. International Journal of Geo-Information, 2017, 6(10): 297.
[19] 邱霞. 那曲南部地区砾石特征参数空间分布规律研究[D]. 成都: 成都理工大学, 2021.
[19] [Qiu Xia. Research on the Spatial Distribution Law of Gravel Characteristic Parameters in Southern Naqu. Master Thesis[D]. Chengdu: Chengdu University of Technology, 2021.]
[20] Wentworth C K. A Scale of Grade and Class Terms for Clastic Sediments[J]. The Journal of Geology, 1922, 30(5): 377-392.
[21] 裴志林, 杨勤科, 王春梅, 等. 黄河上游植被覆盖度空间分布特征及其影响因素[J]. 干旱区研究, 2019, 36(3): 546-555.
[21] [Pei Zhilin, Yang Qinke, Wang Chunmei, et al. Spatial distribution characteristics and influencing factors of vegetation coverage in the upper reaches of the Yellow River[J]. Arid Zone Research, 2019, 36(3): 546-555.]
[22] 文琦, 施琳娜, 马彩虹, 等. 黄土高原村域多维贫困空间异质性研究——以宁夏彭阳县为例[J]. 地理学报, 2018, 73(10): 1850-1864.
[22] [Wen Qi, Shi Linna, Ma Caihong, et al. Research on the spatial heterogeneity of multidimensional poverty in the villages of the Loess Plateau: A case study of Pengyang County, Ningxia[J]. Acta Geographica Sinica, 2018, 73(10): 1850-1864.]
[23] 鲁迪, 钱宏胜, 赵鹏飞, 等. 河南省区域城市化与生态环境效应空间关系分析[J]. 信阳师范学院学报(自然科学版), 2015, 28(3): 377-381.
[23] [Lu Di, Qian Hongsheng, Zhao Pengfei, et al. Analysis of spatial relationship between regional urbanization and ecological environment effects in Henan Province[J]. Journal of Xinyang Normal University (Natural Science Edition), 2015, 28(3): 377-381.]
[24] 孙志虎, 牟长城, 孙龙. 采用地统计学方法对落叶松人工纯林表层细根生物量的估计[J]. 植物生态学报, 2006, 30(5): 771-779.
[24] [Sun Zhihu, Mou Changcheng, Sun Long. Estimation of surface fine root biomass of pure larch plantations using geostatistics methods[J]. Chinese Journal of Plant Ecology, 2006, 30(5): 771-779.]
[25] 杨忍, 刘彦随, 龙花楼, 等. 基于格网的农村居民点用地时空特征及空间指向性的地理要素识别: 以环渤海地区为例[J]. 地理研究, 2015, 34(6): 1077-1087.
[25] [Yang Ren, Liu Yansui, Long Hualou, et al. Recognition of geographic elements based on grid-based spatial and temporal characteristics and spatial directivity of rural residential land use: A case study of the Bohai Rim region[J]. Geographical Research, 2015, 34(6): 1077-1087.]
[26] Wang J F, Zhang T L, Fu B J. A measure of spatial stratified heterogeneity[J]. Ecological Indicators, 2016, 67: 250-256.
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