Effect of vegetation coverage change on soil erosion control efficiency in Guishui River Basin
LÜ Kexin1, WANG Ziye2, JIANG Qun'ou1,3,4, GAO Feng1, QIAO Zhi1
1. School of Soil and Water Conservation, Beijing Forestry University, 100083, Beijing, China;
2. Youyan Resources and Environment Research Institute(Beijing) Co. Ltd, 101407, Beijing, China;
3. Key Laboratory of Soil & Water Conservation and Desertification Combating, Ministry of Education, Beijing Forestry University, 100083, Beijing, China;
4. Jinyun Forest Ecosystem Research Station, School of Soil and Water Conservation, Beijing Forestry University, 100083, Beijing, China
Abstract：[Background] Guishui River Basin is an important water conservation area and significant ecological barrier in Beijing, and it is also one of the host sites of the 2022 Winter Olympics. Therefore, it is of great practical significance to explore the influence of vegetation cover on soil erosion in the Guishui River Basin for effective soil erosion control and ecological environment improvement to ensure the smooth preparation of the Winter Olympics.[Methods] In this study, the soil erosion intensity and soil erosion control index in the Guishui River Basin from 2000 to 2018 were estimated based on RUSLE model. The influence law of vegetation cover change on soil erosion control efficiency in the Guishui River Basin was revealed.[Results] 1) The soil erosion intensity in Guishui River Basin showed a downward trend from 2000 to 2008, and increased significantly in 2013, then decreased slightly in 2018, which was not only related to the ecological restoration policies in the basin, but also affected by the inter-annual difference of rainfall intensity. It showed that the spatial variation of vegetation cover in the Guishui River Basin was obvious. The area with high coverage was mainly the natural forestland in the northwest and the eastern edge of the basin, while the coverage in the middle part of the basin was low. What is more, the vegetation coverage improved significantly from 2000 to 2018. 2) Analysis on the efficiency of soil erosion control showed that it was high in Guishui River Basin, and the average value of soil erosion control index from 2000 to 2018 was over than 0.92. It firstly showed a rising trend from 2000 to 2013, reaching the maximum in 2013, but there was a downward trend in 2018. Among them, the control efficiency was high in the northwest mountain area and the central plain area, and low in other areas. 3) The vegetation coverage had a significant impact on the efficiency of soil erosion control, which had negative relationship in few areas with cropland converted into forestland and grassland, but positive in most other areas. When the coverage of forestland was 30%-70%, that of grassland 20%-50%, and that of cropland and orchard 25%-50%, the quadratic function can better represent the relationship between the soil erosion control index and vegetation coverage. In addition, the control efficiency increased with the increase of vegetation coverage.[Conclusions] These results can provide an important reference for soil and water conservation, ecological environment construction and vegetation restoration in Guishui River Basin. Vegetation coverage improvement is an effective way to control soil erosion. In the process of land use type conversion, attention should be paid for the environmental protection so as to avoid intense soil erosion in the short term.
ZHANG Shanghong, FAN Weiwei, LI Yueqiang, et al. The influence of changes in land use and landscape patterns on soil erosion in a watershed[J]. Science of the Total Environment, 2017, 574(1):34.
[2]
秦伟,曹文洪,郭乾坤,等.植被格局对侵蚀产沙影响的研究评述[J].生态学报,2017,37(14):4905. QIN Wei, CAO Wenhong, GUO Qiankun, et al. Review of the effects of vegetation patterns on soil erosion and sediment yield[J]. Acta Ecologica Sinica, 2017, 37(14):4905.
[3]
白雪莲,郑海颖,王理想,等.砒砂岩黄土区植被盖度对土壤侵蚀的影响[J].生态学报,2020,40(11):3776. BAI Xuelian, ZHENG Haiying, WANG Lixiang, et al. The influence of vegetation coverage on soil erosion in sandstone loess area[J]. Acta Ecologica Sinica, 2020, 40(11):3776.
[4]
李国庆,温仲明,杜盛.延安麻塔流域植被对土壤侵蚀的控制效率研究[J].国土与自然资源研究,2019,41(6):64. LI Guoqing, WEN Zhongming, DU Sheng. Study on the control efficiency of vegetation on soil erosion in Mata watershed of Yanan city[J]. Territory & Natural Resources Study, 2019,41(6):64.
[5]
鲁克新,李占斌,张霞,等.室内模拟降雨条件下径流侵蚀产沙试验研究[J].水土保持学报,2011,25(2):6. LU Kexin, LI Zhanbin, ZHANG Xia, et al. Experimental study on law of runoff-erosion-sediment yield under indoor simulated rainfall condition[J]. Journal of Soil and Water Conservation, 2011, 25(2):6.
[6]
李斌,张金屯.不同植被盖度下的黄土高原土壤侵蚀特征分析[J].中国生态农业学报,2010,18(2):241. LI Bin, ZHANG Jintun. Soil erosion characteristics under different vegetation coverage in the Loess Plateau[J]. Chinese Journal of Eco-Agriculture, 2010, 18(2):241.
[7]
陈锐银,严冬春,文安邦,等.基于GIS/CSLE的四川省水土流失重点防治区土壤侵蚀研究[J].水土保持学报,2020,34(1):17. CHEN Ruiyin, YAN Dongchun, WEN Anbang, et al. Research on soil erosion in key prevention and control region of soil and water loss based on GIS/CS in Sichuan province[J]. Journal of Soil and Water Conservation, 2020, 34(1):17.
[8]
肖培青,姚文艺,刘希胜,等.植被固土减蚀作用的力学效应[J].水土保持学报,2013,27(3):59. XIAO Peiqing, YAO Wenyi, LIU Xisheng, et al. Mechanical effects of vegetation in soil conservation and soil erosion reduction[J]. Journal of Soil and Water Conservation, 2013, 27(3):59.
[9]
WISCHMEIER W H, SMITH D D. A universal soil-loss equation to guide conservation farm planning[J]. Transactions in International Congress on Soil Science, 1960(2):418.
[10]
WILLIIAMS J R. The erosion-productivity impact calculator (EPIC) model:A case history[J]. Philosophical Transactions of the Royal Society of London B, 1990, 329(1255):421.
[11]
傅伯杰,赵文武,陈利顶,等.多尺度土壤侵蚀评价指数[J].科学通报,2006,57(16):1936. FU Bojie, ZHAO Wenwu, CHEN Liding, et al. Multiscale soil erosion evaluation index[J]. Chinese Science Bulletin, 2006, 57(16):1936.
[12]
赵文武,傅伯杰,郭旭东.多尺度土壤侵蚀评价指数的技术与方法[J].地理科学进展,2008,27(2):47. ZHAO Wenwu, FU Bojie, GUO Xvdong. The methods and GIS techniques for calculating multiscale soil loss evaluation index[J]. Progress in Geography, 2008,27(2):47.
[13]
CHEN J M, RICH P M, GOWER S T, et al. Leaf area index of boreal forests:Theory, techniques and measurements[J]. Geophys Res, 1997, 102(24):29429.
[14]
KUUSK A, LANG M, NILSON T. Simulation of the reflectance of ground vegetation in sub-boreal forests[J]. Agricultural and Forest Meteorology, 2004, 126(1/2):33.
[15]
林杰,张金池,顾哲衍,等.基于叶面积指数的植被覆盖管理措施因子C的遥感定量估算[J].林业科学,2013,49(2):86. LIN Jie, ZHANG Jinchi, GU Zheyan, et al. Quantitative assessment of vegetation cover and management factor based on leaf area index and remote sensing[J]. Scientia Silvae Sinicae, 2013, 49(2):86.
[16]
蔡崇法,丁树文,史志华,等.应用USLE模型与地理信息系统IDRISI预测小流域土壤侵蚀量的研究[J].水土保持学报,2000,14(2):19. CAI Chongfa, DING Shuwen, SHI Zhihua, et al. Study of applying USLE and geographical information system IDRISI to predict soil erosion in small watershed[J]. Journal of Soil and Water Conservation, 2000,14(2):19.
[17]
刘晓娜,裴厦,陈龙,等.基于InVEST模型的门头沟区生态系统土壤保持功能研究[J].水土保持研究,2018,25(6):168. LIU Xiaona, PEI Xia, CHEN Long, et al. Study on soil conservation service of ecosystem based on InVEST model in Mentougou district of Beijing[J]. Research of Soil and Water Conservation, 2018, 25(6):168.
[18]
陈龙,谢高地,裴厦,等.澜沧江流域生态系统土壤保持功能及其空间分布[J].应用生态学报,2012,23(8):2249. CHEN Long, XIE Gaodi, PEI Xia, et al. Ecosystem's soil conservation function and its spatial distribution in Lancang River Basin, Southwest China[J]. Chinese Journal of Applied Ecology, 2012, 23(8):2249.
[19]
王雅琼,刘彦,阿彦,等.三江源植被保持土壤能力的时空变化[J].环境科学研究,2016,29(7):1023. WANG Yaqiong, LIU Yan, A Yan, et al. Spatial and temporal variation of soil conservation capability of vegetation in Three-Rivers headwaters region[J]. Research of Environmental Sciences, 2016, 29(7):1023.
2021, Vol. 19 
