[1]Zhao Yanbo,Zhao Guangju,Mu Xingmin,et al.Influence and Threshold of Vegetation Change on Sediment Load in the Weihe River Basin[J].Research of Soil and Water Conservation,2024,31(06):96-102,108.[doi:10.13869/j.cnki.rswc.2024.06.008]
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Influence and Threshold of Vegetation Change on Sediment Load in the Weihe River Basin
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
31
Number of periods:
2024 06
Page number:
96-102,108
Column:
Public date:
2024-12-10
- Title:
- Influence and Threshold of Vegetation Change on Sediment Load in the Weihe River Basin
- Keywords:
- Weihe River Basin; NDVI; vegetation threshold; sediment loads
- CLC:
- S157.2
- DOI:
- 10.13869/j.cnki.rswc.2024.06.008
- Abstract:
- [Objective]The aims of this study are to analyze the spatiotemporal variation characteristics of vegetation coverage in the Weihe River Basin, to explore the correlation between vegetation coverage and sediment yield at the watershed scale, and to reveal the threshold of vegetation coverage based on sediment reduction benefits under the background of sediment load changes in the Weihe River. [Methods]The Weihe River Basin, a first-level tributary of the Yellow River, was selected. The vegetation change was analyzed, and the regulation effect of vegetation on sediment transport in the Weihe River Basin was quantified by using linear regression, F-test and piecewise linear regression. [Results]The vegetation coverage of Weihe River Basin showed a significant increasing trend from 2000 to 2019, and the average annual vegetation coverage growth rate was 0.005 5/a. The average annual sediment yield in the study area was higher in the north and lower in the south, and showed a decreasing trend except Juhe River. The main sediment source area was located in the upper reaches of Malian River and Beiluo River in the loess hilly and gully region. The sediment yield decreased with the increase of vegetation coverage, showing a negative exponential correlation, when the vegetation coverage reached to 45%, it could effectively control sediment load in the watershed. Vegetation coverage in Weihe River Basin could be divided into four coverage zones: low coverage zone(0～20%), transition coverage zone(20%～45%), high coverage zone(45%～70%)and very high coverage zone(70%～100%). The vegetation sediment reduction efficiency decreased stepwise with the increase of the coverage zone, and the vegetation sediment reduction efficiency in the very high coverage zone was only 1.9% and 6.0% of that in the low coverage zone and transition coverage zone. [Conclusion]The future vegetation restoration of the Loess Plateau should not only consider the difference of threshold of vegetation coverage in different regions, but also take into account the structure and function of vegetation restoration, so as to improve the diversity and stability of regional vegetation ecosystem.
- References:
-
[1]穆兴民,李朋飞,刘斌涛,等.1901—2016年黄土高原土壤侵蚀格局演变及其驱动机制[J].人民黄河,2022,44(9):36-45.
Mu X M, Li P F, Liu B T, et al. Spatial-temporal development and driving mechanisms of erosion on the Chinese Loess Plateau between 1901 and 2016[J]. Yellow River, 2022,44(9):36-45.
[2]霍云霈,朱冰冰.坡面草被覆盖对侵蚀产沙影响的模拟试验[J].水土保持研究,2022,29(5):14-20.
Huo Y P, Zhu B B. Experimental study on impacts of vegetation patterns on sediment yield of slope[J]. Research of Soil and Water Conservation, 2022,29(5):14-20.
[3]Wang Y X, Ran L S, Fang N F, et al. Aggregate stability and associated organic carbon and nitrogen as affected by soil erosion and vegetation rehabilitation on the Loess Plateau[J]. Catena, 2018,167:257-265.
[4]Tian X J, Zhao G J, Mu X M, et al. Decoupling effects of driving factors on sediment yield in the Chinese Loess Plateau[J]. International Soil and Water Conservation Research, 2023,11(1):60-74.
[5]Xin Z B, Yu X X, Lu X X. Factors controlling sediment yield in China's Loess Plateau[J]. Earth Surface Processes and Landforms, 2011,36(6):816-826.
[6]赵广举,穆兴民,田鹏,等.黄土高原植被变化与恢复潜力预测[J].水土保持学报,2021,35(1):205-212.
Zhao G J, Mu X M, Tian P, et al. Prediction of vegetation variation and vegetation restoration potential in the Loess Plateau[J]. Journal of Soil and Water Conservation, 2021,35(1):205-212.
[7]白云鹏,赵广举,张丽梅,等.近55年来渭河流域输沙变化及驱动因子分析[J].水土保持学报,2020,34(4):91-97.
Bai Y P, Zhao G J, Zhang L M, et al. Spatiotemporal variation of sediment load in the Weihe River Basin in recent 55 years and the driving factors[J]. Journal of Soil and Water Conservation, 2020,34(4):91-97.
[8]徐瑞瑞,高鹏,穆兴民,等.渭河流域水沙时空变化及其对人类活动的响应[J].人民黄河,2020,42(3):17-24.
Xu R R, Gao P, Mu X M, et al. Dynamic of streamflow and sediment load and its response to human activities in the Weihe River Basin[J]. Yellow River, 2020,42(3):17-24.
[9]Zhang R H, Sun R. Evapotranspiration estimation and influence on water change in the Weihe River Basin, China[J]. Remote Sensing Science, 2015,3(4):42-52.
[10]Hu J F, Li P F, Zhao G J, et al. Effects of climate variability and anthropogenic factors on sediment load reduction in the Weihe River Basin, China[J]. Hydrological Processes, 2022,36(4):14562.
[11]刘晓燕,李晓宇,高云飞,等.黄土丘陵沟壑区典型流域产沙的降雨阈值变化[J].水利学报,2019,50(10):1177-1188.
Liu X Y, Li X Y, Gao Y F, et al. Changes of rainfall threshold for sediment producing in the loess hilly and gully region of the Loess Plateau[J]. Journal of Hydraulic Engineering, 2019,50(10):1177-1188.
[12]Toms J D, Lesperance M L. Piecewise regression: A tool for identifying ecological thresholds[J]. Ecology, 2003,84(8):2034-2041.
[13]李鑫浩,曹文华,牛勇,等.黄泛平原区风沙土物理结皮硬度和厚度特征及其影响因素[J].水土保持通报,2022,42(1):63-68,76.
Li X H, Cao W H, Niu Y, et al. Characteristics and influencing factors of hardness and thickness of aeolian sandy soil crust at sandy area of Yellow River floodplain[J]. Bulletin of Soil and Water Conservation, 2022,42(1):63-68,76.
[14]朱方方,秦建淼,朱美菲,等.模拟降雨下林下覆被结构对产流产沙过程的影响[J].水土保持学报,2023,37(3):10-18.
Zhu F F, Qin J M, Zhu M F, et al. Effect of mulch structure on runoff and sediment yield under simulation rainfall[J]. Journal of Soil and Water Conservation, 2023,37(3):10-18.
[15]郭帅,裴艳茜,胡胜,等.黄河流域植被指数对气候变化的响应及其与水沙变化的关系[J].水土保持通报,2020,40(3):1-7,13.
Guo S, Pei Y Q, Hu S, et al. Response of vegetation index to climate change and their relationship with runoff-sediment change in Yellow River Basin[J]. Bulletin of Soil and Water Conservation, 2020,40(3):1-7,13.
[16]Liu X Y, Yang S T, Dang S Z, et al. Response of sediment yield to vegetation restoration at a large spatial scale in the Loess Plateau[J]. Science China Technological Sciences, 2014,57(8):1482-1489.
[17]侯喜禄,曹清玉.陕北黄土丘陵沟壑区植被减沙效益研究[J].水土保持通报,1990,10(2):33-40.
Hou X L, Cao Q Y. Study on the benefits of plants to reduce sediment in the loess rolling gullied region of North Shaanxi[J]. Bulletin of Soil and Water Conservation, 1990,10(2):33-40.
[18]张宽地,王光谦,孙晓敏,等.模拟植被覆盖条件下坡面流水动力学特性[J].水科学进展,2014,25(6):825-834.
Zhang K D, Wang G Q, Sun X M, et al. Hydraulic characteristic of overland flow under different vegetation coverage[J]. Advances in Water Science, 2014,25(6):825-834.
[19]Muradian R. Ecological thresholds: A survey[J]. Ecological Economics, 2001,38(1):7-24.
[20]Chen J, Xiao H B, Li Z W, et al. Threshold effects of vegetation coverage on soil erosion control in small watersheds of the red soil hilly region in China[J]. Ecological Engineering, 2019,132:109-114.
[21]Huggett A J. The concept and utility of ‘ecological thresholds' in biodiversity conservation[J]. Biological Conservation, 2005,124(3):301-310.
[22]孙一,刘晓燕,田勇,等.坡面植被覆盖度对泥沙输移的影响特性[J].工程科学与技术,2022,54(5):12-18.
Sun Y, Liu X Y, Tian Y, et al. Effects of slope vegetation coverage on sediment transport[J]. Advanced Engineering Sciences, 2022,54(5):12-18.
[23]滕佳昆,刘宇.坡面径流冲刷侵蚀的植被覆盖阈值现象研究[J].中国水土保持,2018(4):42-45,69.
Teng J K, Liu Y. Study on the phenomenon of vegetation coverage threshold of slope runoff erosion[J]. Soil and Water Conservation in China, 2018(4):42-45,69.
[24]Zhang K D, Wang Z G, Wang G Q, et al. Overland-flow resistance characteristics of nonsubmerged vegetation[J]. Journal of Irrigation and Drainage Engineering, 2017,143(8):04017021.
[25]刘晓燕,党素珍,高云飞,等.黄土丘陵沟壑区林草变化对流域产沙影响的规律及阈值[J].水利学报,2020,51(5):505-518.
Liu X Y, Dang S Z, Gao Y F, et al. The rule and threshold of the effect of vegetation change on sediment yield in the loess hilly region, China[J]. Journal of Hydraulic Engineering, 2020,51(5):505-518.
[26]张旭,孙一,潘淼,等.植被覆盖度对坡面水流的影响分析[J].水电能源科学,2018,36(6):22-24.
Zhang X, Sun Y, Pan M, et al. Influence of vegetation coverage on overland flow[J]. Water Resources and Power, 2018,36(6):22-24.
[27]Wei Z Z, Wan X Y. Spatial and temporal characteristics of NDVI in the Weihe River Basin and its correlation with terrestrial water storage[J]. Remote Sensing, 2022,14(21):5532.
[28]李艳忠,刘昌明,刘小莽,等.植被恢复工程对黄河中游土地利用/覆被变化的影响[J].自然资源学报,2016,31(12):2005-2020.
Li Y Z, Liu C M, Liu X M, et al. Impact of the grain for green project on the land use/cover change in the middle Yellow River[J]. Journal of Natural Resources, 2016,31(12):2005-2020.
[29]黄晨璐,杨勤科.渭河与泾河流域水沙变化规律及其差异性分析[J].干旱区地理,2021,44(2):327-336.
Huang C L, Yang Q K. Runoff and sediment variation rules and differences in Wei River and Jing River Basins[J]. Arid Land Geography, 2021,44(2):327-336.
[30]中华人民共和国水利部.SL 190—2007 土壤侵蚀分类分级标准[S].北京:中国水利水电出版社,2008.
Ministry of Water Resources of the People's Republic of China. SL 190—2007 Standards for Classification and Gradation of Soil Erosion[S]. Beijing: China Water & Power Press, 2008.
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Last Update:
2024-12-10