青藏高原坡度坡长因子(

黎恩丹; 杨勤科; 庞国伟; 王春梅; 杨丽娟; 乔冰洁

doi:10.13870/j.cnki.stbcxb.2023.01.019

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青藏高原坡度坡长因子(

更新时间：2025-03-12

- 青藏高原坡度坡长因子(
- Spatial Pattern and Influencing Factors of Slope Length and Steepness Factors (
- 水土保持学报 2023年37卷第1期页码：133-139
- 作者机构：
  
  1. 西北大学城市与环境学院,西安,710127
  2. 陕西省地表系统与环境承载力重点实验室,西安,710127
  3. 旱区生态水文与灾害防治国家林业和草原局重点实验室,西安,710127
- 作者简介：
  
  [ "黎恩丹(1997-),女,硕士研究生,主要从事区域土壤侵蚀调查与定量评价研究。E-mail:endan_@stumail.nwu.edu.cn" ]
- 基金信息：
  
  中国科学院战略性先导科技专项(XDA20040202)
- DOI：10.13870/j.cnki.stbcxb.2023.01.019
  中图分类号： S157.1
- 纸质出版：2023
- 稿件说明：
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黎恩丹, 杨勤科, 庞国伟, 等. 青藏高原坡度坡长因子([J]. 水土保持学报, 2023,37(1):133-139.

LI Endan, YANG Qinke, PANG Guowei, et al. Spatial Pattern and Influencing Factors of Slope Length and Steepness Factors ([J]. 2023, 37(1): 133-139.
黎恩丹, 杨勤科, 庞国伟, 等. 青藏高原坡度坡长因子([J]. 水土保持学报, 2023,37(1):133-139. DOI： 10.13870/j.cnki.stbcxb.2023.01.019.

LI Endan, YANG Qinke, PANG Guowei, et al. Spatial Pattern and Influencing Factors of Slope Length and Steepness Factors ([J]. 2023, 37(1): 133-139. DOI： 10.13870/j.cnki.stbcxb.2023.01.019.

摘要

地形是影响土壤侵蚀的主要因素

但目前关于青藏高原地形因子的分布格局和影响因素有待研究。基于1弧秒分辨率的SRTM(shuttle radar topography mission)高程数据

计算坡度、坡长、LS因子(slope length and steepness factors

LS)

结合高程积分和Hack剖面等

对青藏高原LS因子的分布格局、统计分布特征和影响因素进行研究

结果表明:(1)坡度、坡长和LS因子这3个地形指标

均表现出高原内部小、四周高山大的格局

内流区与外流区的坡度均值分别为6.55°和14.3°

坡长均值分别为122.9

172.2 m

LS均值分别为4.8和12.7;(2)青藏高原LS因子整体受坡度影响

但高原边缘陡峭地区LS因子主要受坡长影响;(3)青藏高原6条主要河流的Hack剖面都呈上凸形态

该地区地貌演化整体上处于幼年期;(4)青藏高原LS因子的分布特征与土壤侵蚀类型及其组合有对应关系:周边地区的高值对应冰川侵蚀—水蚀

西北部的低值对应水力—冻融侵蚀和风蚀

东南部边缘向高原内部过渡地区的较高值对应水力—重力侵蚀。通过分析LS因子的分布格局和统计特征

可为土壤侵蚀学评价提供理论和数据支撑

对于青藏高原地球系统物质迁移转换研究具有重要意义。

Abstract

Topography is the main factor influencing soil erosion

but the distribution pattern and influencing factors of topographic factors on the Qinghai-Tibet Plateau (QTP) need to be studied. Based on the 1 arc resolution SRTM (Shuttle Radar Topography Mission) elevation data

we calculated the slope

slope length and LS factor (slope length and steepness factors

LS)

and studied the distribution pattern

statistical distribution characteristics and influencing factors of LS factors on the QTP in combination with area-elevation integration and Hack profile. The results show that: (1) The three topographic indexes of slope

slope length and LS factors all showed the pattern of that small in the center of the plateau and large in the around high mountains

and the average slope gradient of the inner flow area and the outer flow area was 6.55° and 14.3°

the average of slope length was 122.9 and 172.2 m

the mean LS factor was 4.8 and 12.7

respectively. (2) On the whole

the LS factor on the QTP was mainly affected by slope steepness

but the LS factor in the steep areas on the edge of the plateau was mainly affected by slope length. (3) The Hack profiles of the six main rivers in the QTP were convex

and the geomorphic evolution of the region was in its youth stage as a whole. (4) The distribution characteristics of LS factor on the QTP were consistent with soil erosion types and their combinations. The high value in the surrounding area corresponded to Glacier erosion-water erosion

the low value in the northwest corresponded to hydraulic freeze-thaw erosion and wind erosion

and the high value in the transition area from the southeast edge to the interior of the plateau corresponded to hydraulic gravity erosion. The distribution pattern and statistical characteristics of LS factor analyzed in this paper could provide theoretical and data support for the evaluation of soil erosion

and also had great significance for the study of material migration and transformation in the earth system of the QTP.

关键词

Keywords

references

孙鸿烈,郑度,姚檀栋,等.青藏高原国家生态安全屏障保护与建设[J].地理学报,2012,67(1):3-12.

姚檀栋.青藏高原水-生态-人类活动考察研究揭示"亚洲水塔"的失衡及其各种潜在风险[J].科学通报,2019,64(27):2761-2762.

Li D F, Lu X X, Overeem I, et al. Exceptional increases in fluvial sediment fluxes in a warmer and wetter High Mountain Asia[J].Science,2021,374(8867):599-603.

崔鹏,贾洋,苏凤环,等.青藏高原自然灾害发育现状与未来关注的科学问题[J].中国科学院院刊,2017,32(9):985-992.

吴志广,徐平,赵良元.长江源区综合科学考察报告2019[M].武汉:长江出版社,2020.

Tarolli P M, Mudd S M. Remote sensing of geomorphology[M].Amsterdam:Elsevier,2020:317-338.

Yang Q K, Mc Vicar T R, Van Niel T G, et al. Improving a digital elevation model by reducing source data errors and optimising interpolation algorithm parameters:An example in the Loess Plateau, China[J].International Journal of Applied Earth Observation and Geoinformation,2007,9(3):235-246.

封志明,李文君,李鹏,等.青藏高原地形起伏度及其地理意义[J].地理学报,2020,75(7):1359-1372.

Mc Cool D K, Foster G R, Weesies G A. Slope length and steepness factors (

)[M].Washington District of Columbia:United States Department of Agriculture,1997:101-104.

Wilson J P. Digital terrain modeling[J].Geomorphology,2012,137(1):107-121.

刘静,张金玉,葛玉魁,等.构造地貌学:构造-气候-地表过程相互作用的交叉研究[J].科学通报,2018,63(30):3070-3088.

Morgan R P C, Nearing M. Handbook of erosion modelling[M].New Jersey:John Wiley and Sons,2016.

Wischmeier W H, Smith D D. Predicting rainfall erosion losses:A guide to conservation planning[M].Washington District of Columbia:United States Department of Agriculture,1978:12-15.

杨勤科.区域水土流失监测与评价[M].郑州:黄河水利出版社,2015.

Liu B Y, Hearing M A, Risse L M. Slope gradient effects on soil loss for steep slopes[J].Transactions of the ASAE,1994,37 (6):1835-1840.

Liu B Y, Nearing M A, Shi P J, et al. Slope length effects on soil loss for steep slopes[J].Soil Science Society of America Journal, 2000,64(5):1759-1763.

Zhang H M, Wei J C, Yang Q K. An improved method for calculating slope length (λ) and the

parameters of the Revised Universal Soil Loss Equation for large watersheds[J].Geoderma,2017,308:36-45.

符素华,刘宝元,周贵云,等.坡长坡度因子计算工具[J].中国水土保持科学,2015,13(5):105-110.

郭明航,杨勤科,王春梅.中国主要水蚀典型区侵蚀地形特征分析[J].农业工程学报,2013,29(13):81-89.

杨勤科,郭明航,李智广,等.全国土壤侵蚀地形因子提取与初步分析[J].中国水土保持,2013(10):17-21.

Burbank D W. Characteristic size of relief[J].Nature,1992,359(6395):483-484.

杜朝正,杨勤科,王春梅,等.青藏高原典型样区2种土壤侵蚀评价与制图方法的对比[J].西北农林科技大学学报(自然科学版),2021,49(7):95-104.

Duncan C, Masek J, Fielding E. How steep are the Himalaya? Characteristics and implications of along-strike topographic variations[J].Geology,2003,31(1):75-78.

Fielding E, Isacks B. How flat is Tibet?[J].Geology,1994,22(2):163-167.

张镱锂,李炳元,刘林山,等.再论青藏高原范围[J].地理研究,2021,40(6):1543-1553.

Immerzeel W W, Lutz A F, Andrade M, et al. Importance and vulnerability of the world's water towers[J].Nature,2020,577(7790):364-369.

Yao T D, Bolch T, Chen D L, et al. The imbalance of the Asian water tower[J].Nature Reviews Earth and Environment,2022,3:618-632.

NASA JPL. NASA Shuttle Radar Topography Mission Global 1 arc second[Z].NASA EOSDIS Land Processes DAAC,2013.

Renard K G, Foster G R, Weesies G A, et al. Prediction rainfall erosion by water:A guide to conservation planning with the Revised Universal Soil Loss Equation (RUSLE)[M].Washington District of Columbia:United States Department of Agriculture,1997.

Evans I S, Young M. Statistical characterizat??畮漠????婬桴潩畴?奤??婭桡畴??????敢瑹?慣汯???湴?敲獛瑒楝洮慄瑵楲潨湡?洠敕瑮桩潶摥?潳晩?獹漨楕汮?晴牥敤攠穋敩?瑧桤慯睭?攺牔潥獲楲潡湩?椠湡?瑡桬敹?兩楳測杰桲慯楧?呡業戠敤瑯?偵汭慥瑮整慡畴孩?嵮?丱愹琷甸爮愼汢??慛稳愱牝搠獓??㈠い????????????????????戠牕?季??嵴?呩敮湴杩?女????娠桥慲湲???夠???楡畬?坯??整瑨?慳氠??卲瀠慥瑬楥潶瑡整浩灯潮爠慧汲?摤祩湥慮浴楳捛獊?愮渠摉?摴牥楲癮敡牴獩?潮晡?眠楊湯摵?敮牡潬猠楯潦渠?潥湯?瑲桡数?兩楣湡杬栠慉楮?呯楲扭敡瑴?偯汮愠瑓散慩略???栬椲渰愲嬱?崳???挩漺氲漹朶椭挳愲氰??湢摲椾捛愳琲潝爠猠?㈣????????敉?ぁ???』??扦牡?宄??嶹?夔慶湛杊??????匬甲渰?刲?????椩渺朴″夷?????氼潢扲愾汛″愳獝猠攴猩珨洴攟滝琁?潋昭?眮椲渰搲‰整犦漴猟楁漱溨?拀態玀支搇?潛湚?愮?玬瀺愴琩槨愴氟泝礁?摋椭珃琬爲椰戲田琮攼摢?刾坛?儴?洠潈摡敲汰孥?崠?倠牂漬朠牓整獥獬?楡渠?倠桃礬猠楆捲慥汭??敲漠杁爠態瀮栠祇??慢牡瑬栠?慥湮摳??湩癶楩牴潹渠浡敮湡瑮???ど?㈠???????????㈠?cological models:A case study of riparian cottonwood population dynamics[J].Ecological Applications,2011,21(4):1225-1240.

Pearson E S, Barbara A S. Tests for rank correlation coefficients III. Distribution of the transformed kendall coefficient[J]. Biometrika,1962,49(1/2):185-191.

Strahler A N. Hypsometric (Area-Altitude) analysis of erosional topography[J].Geological Society of America Bulletin,1952,63(11):1117-1142.

Hack J T. Stream-profile analysis and stream-gradient index[J].Jourmal of Research of the U.S. Geological Survey,1973,1(4):421-429.

Zhang J J, Zhu W B, Zhao F, et al. Spatial variations of terrain and their impacts on landscape patterns in the transition zone from mountains to plains-A case study of Qihe River Basin in the Taihang Mountains[J].Science China (Earth Sciences),2018,61(4):450-461.

尤联元,杨景春.中国地貌[M].北京:科学出版社,2013:27-28.

Teng H F, Liang Z Z, Chen S C, et al. Current and future assessments of soil erosion by water on the Tibetan Plateau based on RUSLE and CMIP5 climate models[J].Science of the Total Environment,2018,635:673-686.

白永健,倪化勇,葛华.青藏高原东南缘活动断裂地质灾害效应研究现状[J].地质力学学报,2019,25(6):1116-1128.

马波,张加琼,税军锋,等.西藏中东部地区土壤侵蚀野外调查报告[J].水土保持通报,2018,38(5):1-8.

张建国,刘淑珍,杨思全.西藏冻融侵蚀分级评价[J].地理学报,2006,61(9):911-918.

朱显谟.1:1,500万中国土壤侵蚀图,中华人民共和国自然地图集[M].北京:科学出版社,1965.

Huggett R J. Fundamentals of geomorphology[M].Third Edition.London and New York:Routledge,2011:207-208.

李吉均.青藏高原的地貌轮廓及形成机制[J].山地研究,1983,1(1):7-15.

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