模拟降雨条件下喀斯特坡耕地氮磷元素地下漏失特征

doi:10.16843/j.sswc.2018.03.008

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Abstract [Background]As a unique landscape, karst slope is characterized by a "double-layer hydrologic structure" consisting of surface and underground. The karst slope farmland with such special structure leads to serious soil and water loss in two types, surface loss and underground leakage loss. The serious water and soil and nutrient loss not only did cause land productivity reduction and ecological deterioration, but result in underground water pollution. The soil nutrient loss process on the karst slope farmlands is complicate, which is affected by many factors (e.g., precipitation, topography and soil properties).There is no doubt that rainfall intensity and underground pore fissure are the two of the most important factors influencing water and soil loss on karst slopes.[Methods]Taking karst slope farmlands as the research object, several rainfall simulation tests were conducted. In addition, a steel tank (length of 4.0 m, width of 1.5 m and depth of 0.35 m), in which the underground pore fissure degree could be adjusted, was used to stimulate the surface micro topography and underground fissure structure of karst slopes. The first step was to adjust the slope degree and underground fissure degree of the steel tank to the designed levels. The second step was to carry out artificial rainfalls and collect the runoff and sediment samples at 10 minutes interval. The final step was to determine the total nitrogen and total phosphorus concentration of samples collected.[Results]1) The underground runoff was positively correlated with the rainfall intensity and the underground pore fissure degree. 2) Rainfall intensity showed certain effects on nutrients concentration in underground runoff, in which the total phosphorus concentration showed a wavy change with the increase of rainfall intensity while the total nitrogen concentration increased with the increasing of rainfall intensity. Underground pore fissure degree had a significant effect on the total nitrogen concentration and the correlation coefficient was 0.906, but had no obvious effect on the total phosphorus. 3) The amount of total phosphorus loss was fitted by a linearly equation with the rainfall intensity, and fitted by a polynomial with the underground pore fissure degree. 4) The cumulative runoff was significantly related to the cumulative loss of total nitrogen and total phosphorus in the underground runoff, and the correlation coefficient was 0.986 3 and 0.997 4 respectively.[Conclusions]In summary, the underground pore fissure degree has little effect on soil nutrient loss, however the rainfall intensity is a key factor influencing soil nutrient loss on karst slope farmlands. These results of this study may provide a theoretical basis for solving the effect of soil and nutrient loss on social economy, ecological environment and human life development.

Key words： karst slope farmland rainfall intensity underground pore fissure degree runoff nitrogen and phosphorus loss

Received: 17 July 2017

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S158.1

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	YANG Yuqiong
	DAI Quanhou
	LI Changlan
	PENG Xudong
	YAN Youjin

Cite this article:

YANG Yuqiong,DAI Quanhou,LI Changlan, et al. Characteristics of nitrogen and phosphorus underground loss in karst slope farmlands under simulated rainfall[J]. SSWC, 2018, 16(3): 59-67.

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http://journal12.magtechjournal.com/Jweb_stbc/EN/10.16843/j.sswc.2018.03.008 OR http://journal12.magtechjournal.com/Jweb_stbc/EN/Y2018/V16/I3/59

[1]	黄秋昊,蔡运龙,王秀春. 我国西南部喀斯特地区石漠化研究进展[J].自然灾害学报,2007,16(2):106. HUANG Qiuhao,CAI Yunlong,WANG Xiuchun,Progress of research on rocky desertification in karst areas of southwestern China[J]. Journal of Natural Disasters,2007,16(2):106.
[2]	袁道先. 中国岩溶学[M].北京:地质出版社,1993:133. YUAN Daoxian. Karstification in China[M]. Beijing:Geological Publishing House,1993:133.
[3]	张殿发,王世杰,李瑞玲. 贵州省喀斯特山区生态环境脆弱性研究[J].地理与地理信息科学,2002,18(1):77. ZHANG Dianfa,WANG Shijie,LI Ruiling. Study on the eco-environmental vulnerability in Guizhou Karst Mountains[J]. Geography and Territorial research,2002, 18(1):77.
[4]	李宗发. 贵州喀斯特地貌分区[J].贵州地质,2011,28(3):177. LI Zongfa. Division of Karst landform in Guizhou[J]. Guizhou Geology,2011,28(3):1771.
[5]	邱光胜,胡圣,叶丹,等. 三峡库区支流富营养化及水华现状研究[J].长江流域资源与环境,2011,20(3):311. QIU Guangsheng,HU Sheng,YE Dan,et al. Investigation on the present situation of eutrophication and water bloom in the branches of three gorges reservoir[J]. Resources and Environment in the Yangtze Basin,2011,20(3):311.
[6]	马经安,李红清. 浅谈国内外江河湖库水体富营养化状况[J].长江流域资源与环境,2002,11(6):576. MA Jingan,LI Hongqing. Preliminary discussion on eutrophication status of lakes,reservoirs and rivers in China and overseas[J]. Resources and Environment in the Yangtze Basin,2002,11(6):576.
[7]	王帅兵,刘华,朱朝辉,等. 坡地养分流失研究现状及控制技术[J].绿色科技,2012(6):143. WANG Shuaibing, LIU Hua, ZHU Chaohui, et al. Research status of soil nutrient loss in slope land and control technology[J]. 2012(6):143.
[8]	刘丛强,蒋颖魁,陶发祥,等. 西南喀斯特流域碳酸盐岩的硫酸侵蚀与碳循环[J].地球化学,2008,37(4):404. LIU Congqiang,JIANG Yingkui,TAO Faxiang, et al. Chemical weathering of carbonate rocks by sulfuric acid and the carbon cycling in Southwest China[J]. GEOCHIMICA,2008,37(4):404.
[9]	杨智,戴全厚,黄启鸿,等. 典型喀斯特坡面产流过程试验研究[J].水土保持学报,2010,24(4):81. YANG Zhi,DAI Quanhou,HUANG Qihong,et al. Experimental study of runoff processes on typical Karst slope[J]. Journal of Soil and Water Conservation,2010,24(4):81.
[10]	王恒松,熊康宁,刘云. 喀斯特区地下水土流失机理研究[J].中国水土保持,2009(8):11. WANG Hengsong,XIONG Kangning,LIU Yun. Mechanism research of soil and water loss underground in Karst region[J]. Journal of Soil and Water Conservation,2009(8):11.
[11]	周念清,李彩霞,江思珉,等. 普定岩溶区水土流失与土壤漏失模式研究[J].水土保持通报,2009,29(1):7. ZHOU Nianqing,LI Caixia,JIANG Simin,et al. Models of soil and water loss and soil leakage in Puding Karst area[J]. Bulletin of Soil and Water Conservation,2009,29(1):7.
[12]	张信宝,王世杰,曹建华. 西南喀斯特山地的土壤硅酸盐矿物物质平衡与土壤流失[J].地球与环境,2009,37(2):97. ZHANG Xinbao,WANG Shijie,CAO Jianhua. Mass balance of silicate minerals in soils and soil losses in the Karst mountainous regions of southwest China[J]. Earth and Environment,2009,37(2):97.
[13]	WANG J X,ZOU B P,LIU Y,et al. Erosion-creep-collapse mechanism of underground soil loss for the karst rocky desertification in Chenqi village, Puding County, Guizhou, China[J]. Environmental Earth Sciences,2014,72(8):2751.
[14]	ZHOU J,TANG Y,YANG P,et al. Inference of creep mechanism in underground soil loss of karst conduits I. Conceptual model[J]. Natural Hazards,2012,62(3):1191.
[15]	DAI Quanhou,PENG Xudong,ZHAO Longshan,et al. Effects of underground pore fissures on soil erosion and sediment yield on karst slopes[J]. Land Degradation & Development,2017,28(7):1922.
[16]	彭旭东,戴全厚,杨智,等. 喀斯特山地石漠化过程中地表地下侵蚀产沙特征[J]. 土壤学报,2016,53(5):1237. PENG Xudong,DAI Quanhou,YANG Zhi,et al. Sediment yield of surface and underground erosion in the process of rocky desertification of Karst area[J]. Journal of Soil,2016,53(5):1237.
[17]	刘秉正,李光录,吴发启,等. 黄土高原南部土壤养分流失规律[J]. 水土保持学报,1995,9(2):95. LIU Bingzheng,LI Guanglu,WU Faqi,et al. The regular patterns of the loss of soil nutrients on the southern Loess Plateau[J]. Journal of Soil and Water Conservation,1995,9(2):95.
[18]	李昌兰,戴全厚,彭旭东,等. 喀斯特坡耕地浅层地下孔(裂)隙发育过程中径流产污特征[J].环境科学学报,2016,36(12):4437. LI Changlan,DAI Quanhou,PENG Xudong,et al. Characteristics of nitrogen,phosphorus and potassium losses in underground runoff of Karst slope farmlands during the developing process of shallow Karst fissure[J]. Acta Scientiae Circumstantiae,2016,36(12):4437.
[19]	彭旭东,戴全厚,李昌兰,等. 模拟雨强和地下裂隙对喀斯特地区坡耕地养分流失的影响[J].农业工程学报,2017,33(2):133. PENG Xudong,DAI Quanhou,LI Changlan,et al. Effect of simulated rainfall intensities and underground pore fissure degrees on soil nutrient loss from slope farmlands in Karst Region[J]. Transactions of the Chinese Society of Agricultural Engineering,2017,33(2):133.
[20]	戴全厚,喻理飞,杨智,等. 一种用于研究坡面径流和地下孔裂隙流的模拟试验装置:201210391855.2[P]. 2013-01-02. DAI Quanhou,YU Lifei,YANG Zhi,et al. A simulation test device for the study of slope runoff and fracture flow in the underground hole:201210391855.2[P]. 2013-01-02.
[21]	鲁如坤. 土壤农业化学分析方法[M].北京:中国农业科技出版社,1999:125. LU Rukun. Soil agrochemical analysis method[M]. Beijing:China Agricultural Science and Technology Press,1999:125.
[22]	贾洪文. 降雨与土壤养分流失关系分析[J].水土保持应用技术,2007(1):23. JIA Hongwen. Analysis of relationship between rainfall and soil nutrient loss[J]. Technology of Soil and Water Conversation,2007(1):23.
[23]	邬伦,李佩武. 降雨-产流过程与氮、磷流失特征研究[J].环境科学学报,1996,16(1):116. WU Lun,LI Peiwu. Studies on rainfall process,flow-making and nitrogen and phosphorus losses[J]. Acta Scientiae Circumstantiae,1996,16(1):116.
[24]	潘瑞炽,童愚得. 植物生理学[M].北京:高等教育出版社,1984:35. PAN Ruichi,TONG Yude. Plant physiology[M]. Beijing:Higher Education Press,1984:35.
[25]	穆天亮,王全九,王辉. 黄土坡面定雨强入渗产流物理基础模型研究[J].西北农林科技大学学报(自然科学版),2009, 37(10):199. MU Tianliang,WANG Quanjiu,WANG Hui. Study on physical base model of infiltration and runoff formation on loess slope land for a fixed rainfall intensity during rainfall[J]. Journal of Northwest A&F University (Nat. Sci. Ed.),2009,37(10):199.
[26]	黄满湘,章申,张国梁,等. 北京地区农田氮素养分随地表径流流失机理[J].地理学报,2003,58(1):147. HUANG Manxiang,ZHANG Shen,ZHANG Guoliang,et al. Losses of nitrogen nutrient in overland flow from farmland in Beijing under simulated rainfall conditions[J]. Acta Geographica Sinica,2003,58(1):147.
[27]	罗春燕,涂仕华,庞良玉,等. 降雨强度对紫色土坡耕地养分流失的影响[J].水土保持学报,2009,23(4):24. LUO Chunyan,TU Shihua,PANG Liangyu,et al. Effect of rain intensity on nutrient losses from sloping land of purple soil[J]. Journal of Soil and Water Conservation,2009,23(4):24.
[28]	张亚丽,张兴昌,邵明安,等. 降雨强度对黄土坡面矿质氮素流失的影响[J].农业工程学报,2004,20(3):55. ZHANG Yali,ZHANG Xingchang,SHAO Mingan,et al. Impact of rainfall intensity on soil mineral nitrogen loss by runoff on loess slope[J]. Transactions of the Chinese Society of Agricultural Engineering, 2004,20(3):55.
[29]	高建平,吴桂武,黄震,等. 浅析黔东地区岩溶地下水水化学特征[J].地下水,2015,37(6):22. GAO Jianping,WU Guiwu,HUANG Zhen,et al. Hydro chemical characteristics' of Karst groundwater in eastern Guizhou[J]. Underground water,2015,37(6):22.
[30]	陈玲,刘德富,宋林旭,等. 不同雨强下黄棕壤坡耕地径流养分输出机制研究[J].环境科学,2013,34(6):2152. CHEN Ling,LIU Defu,SONG Linxu,et al. Characteristics of nutrient loss by runoff in sloping arable land of yellow-brown under different rainfall intensities[J]. Environmental Science,2013,34(6):2152.
[31]	陈洪松,邵明安,张兴昌,等. 野外模拟降雨条件下坡面降雨入渗、产流试验研究[J]. 水土保持学报,2005,19(2):5. CHEN Hongsong, SHAO Mingan, ZHANG Xingchang, et al. Field experiment on hillslope rainfall infiltration and runoff under simulated rainfall conditions[J]. Journal of Soil and Water Conservation, 2015,19(2):5.
[32]	陈磊,李占斌,李鹏,等. 野外模拟降雨条件下水土流失与养分流失耦合研究[J].应用基础与工程科学学报,2011(S1):171. CHEN Lei,LI Zhanbin,LI Peng, et al. The coupling effect on soil erosion and nutrient lost under simulated rainfall[J]. Journal of Basic Science and Engineering,2011(S1):171.