Distribution characteristics of soil total organic carbon in typical Karst area and its response to different planting and management modes of slope farmland
HUANG Kai1,2, LI Rui1,2, YANG Pingping1,2, PAN Lidong1,2, ZHANG Linqing1,2
1. Guizhou Normal University, School of Karst Science, 550001, Guiyang, China; 2. State Engineering Technology Institute for Karst Desertification Control, 550001, Guiyang, China
Abstract：[Background] Karst landforms are concentrated in the southwest of China. Under the influence of both natural and human factors, rocky desertification is serious in this area. The total organic carbon (TOC) content is an important index to reflect the soil quality. Compared with traditional planting mode, compound planting mode may reduce soil erosion and improve TOC. The purpose of this paper is to explore the distribution characteristics of TOC in typical Karst rocky desertification areas and the change patterns of TOC under different planting and management modes.[Methods] Qianxi Jinlan demonstration area and Guanling-Zhenfeng Huajiang demonstration area were taken as study areas. The two study areas are of strong typicality in rocky desertification degree and slope farmland planting modes. Based on the field sampling and laboratory analysis, the intrinsic mechanism of TOC changing with the degree of rocky desertification and the response mechanism to different planting and management modes were discussed.[Results] 1) The average TOC of Qianxi Jinlan demonstration area was 29.06 g/kg. The average TOC of Guanling-Zhenfeng Huajiang demonstration area was 33.02 g/kg. There was no significant difference in TOC content between the two study areas. 2) The TOC of intensive rocky desertification was the highest, which was 38.96 g/kg. There was a significant difference in TOC content between moderate rocky desertification and intensive rocky desertification (P<0.05). 3) The TOC content in different planting modes showed the following pattern:silvopasture (34.38 g/kg) > agroforestry (33.35 g/kg) > economic fruit forest (32.23 g/kg) > cultivated pastures (30.91 g/kg) > monoculture of other crops (27.20 g/kg) > maize (17.67 g/kg). 4) There was a significant difference in TOC content among 3 field management modes (refined management, general management, and extensive management) in slope farmland. With the increase in the delicacy of field management mode, TOC content showed a trend of increasing gradually.[Conclusions] Compared with non-karst areas, the TOC content of topsoil in Karst area is not low. With the aggravation of rocky desertification, the TOC of soil will not always decrease. Planting and management modes have a great impact on TOC. In general, compound planting, grass planting, afforestation, and refined management may significantly improve the content of TOC in slope farmland. The results of this paper may provide a theoretical basis for the adjustment of the planting structure in the Karst slope farmland, and the comprehensive control of regional soil erosion and rocky desertification.
黄凯, 李瑞, 杨坪坪, 盘礼东, 张琳卿. 喀斯特地区土壤有机碳分布及其对种植管理模式的响应[J]. 中国水土保持科学, 2021, 19(3): 37-46.
HUANG Kai, LI Rui, YANG Pingping, PAN Lidong, ZHANG Linqing. Distribution characteristics of soil total organic carbon in typical Karst area and its response to different planting and management modes of slope farmland. SSWC, 2021, 19(3): 37-46.
ZHANG J Y, DAI M H, WANG L C, et al. The challenge and future of rocky desertification control in karst areas in southwest China[J]. Solid Earth,2016,7(1):83.
[2]
熊康宁,李晋,龙明忠.典型喀斯特石漠化治理区水土流失特征与关键问题[J].地理学报,2012,67(7):16. XIONG Kangning, LI Jin, LONG Mingzhong. Features of soil and water loss and key issues in demonstration areas for combating karst rocky desertification[J].Acta Geographica Sinica,2012,67(7):16.
[3]
戴全厚,严友进.西南喀斯特石漠化与水土流失研究进展[J].水土保持学报,2018,32(2):4. DAI Quanhou, YAN Youjin. Research progress of karst rocky desertification and soil erosion in Southwest China[J].Journal of Soil and Water Conservation,2018,32(2):1.
[4]
王绍强,周成虎,李克让,等.中国土壤有机碳库及空间分布特征分析[J].地理学报,2000,67(5):533. WANG Shaoqiang, ZHOU Chenghu, LI Kerang, et al. Analysis on spatial distribution characteristics of soil organic carbon reservoir in China[J]. Acta Geographica Sinica,2000,67(5):533.
[5]
周莉,李保国,周广胜.土壤有机碳的主导影响因子及其研究进展[J].地球科学进展,2005,20(1):99. ZHOU Li, LI Baoguo, ZHOU Guangsheng. Advances in controlling factors of soil organic carbon[J].Advances in Earth Sciences,2005,20(1):99.
[6]
DOLLINGER J, JOSE S. Agroforestry for soil health[J]. Agroforestry Systems,2018,92(2):213.
[7]
许华森,毕华兴,高路博,等.晋西黄土区苹果+大豆间作系统小气候及其对作物生产力的影响[J].中国水土保持科学,2014,12(2):9. XU Huasen, BI Huaxing, GAO Lubo, et al. Microclimate and its effects on crop productivity in the Malus pumila and Glycine max intercropping systems on the Loess Plateau of West Shanxi province[J].Science of Soil and Water Conservation,2014,12(2):9.
[8]
高路博,毕华兴,云雷,等.黄土半干旱区林草复合优化配置与结构调控研究进展[J].水土保持研究, 2011,18(3):260. GAO Lubo, BI Huaxing, YUN Lei, et al. Review on structure and optimal allocation of forest-grass strip-intercropping system in semi-arid area of loess plateau[J].Research of Soil and Water Conservation,2011,18(3):260.
[9]
孙飞达,于洪波,陈文业.安家沟流域农林草复合生态系统类型及模式优化设计[J].草业科学,2009,26(9):190. SUN Feida, YU Hongbo, CHEN Wenye. Agroforestry and grass combined ecosystem types and optimized model design in Anjiagou river basin[J].Pratacultultural Sciences,2009,26(9):190.
[10]
唐夫凯,齐丹卉,卢琦,等.中国西北地区农林复合经营的保护与发展[J].自然资源学报,2016,31(9):1429. TANG Fukai, QI Danhui, LU Qi, et al. Strategies of conservation and development of agroforestry ecosystem in Northwest China[J].Journal of Natural Resource,2016,31(9):1429.
[11]
赵斯,赵雨森,王林,等.东北黑土区农林复合土壤效应[J].东北林业大学学报,2010,38(5):68. ZHAO Si, ZHAO Yusen, WANG Lin, et al. Complex effect of agroforestry in black soil region of Northeast China[J].Journal of Northeast Forestry University,2010,38(5):68.
[12]
贾树海,李明,邢兆凯,等.不同农林复合模式对土壤理化性质及酶活性的影响[J].土壤通报,2014,45(3):648. JIA Shuhai, LI Ming, XING Zhaokai, et al. Effect of different agroforestry patterns on soil phys-ichemical properties and enzyme activities[J].Chinese Journal of Soil Science,2014,45(3):648.
[13]
王娇.辽西北地区典型农林复合模式下土壤特性研究[J].防护林科技,2014,7(7):1. WANG Jiao. Soil characteristics under typical agroforestry model in northwestern areas[J].Protection Forest Science and Technology,2014,7(7):1.
[14]
许峰,蔡强国,吴淑安,等.坡地农林复合系统土壤养分时间过程初步研究[J].水土保持学报,2000,14(3):46. XU Feng, CAI Qiangguo, WU Shuan, et al. Study on temporal processes of sloping agroforestry system[J].Journal of Soil and Water Conservation,2000,14(3):46.
[15]
夏青,何丙辉,谢洲,等.紫色土农林复合经营土壤理化性状研究[J].水土保持学报,2006,20(2):86. XIA Qing, HE Binghui, XIE Zhou, et al. Study on soil physical and chemical properties of agroforestry of purple soil[J].Journal of Soil and Water Conservation,2006,20(2):86.
[16]
徐波,朱雪梅,刘倩,等.川中丘陵区不同土地利用方式下土壤养分特征研究:以中国科学院盐亭紫色土农业生态试验站小流域为例[J].西南农业学报,2011,24(2):663. XU Bo, ZHU Xuemei, LIU Qian, et al. Study on nutrient characteristics of soils under different land utilization types in hilly area of central Sichuan basin:A case study in the small river valley of Yanting purple soil agricultural ecosystem experiment station[J].Southwest China Journal of Agricultural Sciences,2011,24(2):663.
[17]
谢刚,谢元贵,廖小锋,等.喀斯特地貌不同海拔坡耕地水土流失及防治模式[J].贵州农业科学,2018,46(5):131. XIE Gang, XIE Yuangui,LIAO Xiaofeng,et al. Soil erosion of slope farmland with different altitudes and control modes in karst area[J].Guizhou Agricultural Sciences,2018,46(5):131.
[18]
于晨曦,熊康宁,陈浒.喀斯特峡谷区干灾害成因初探与对策:以花江顶坛小流域为例[J].贵州师范大学学报(自然科学版),2013,31(1):1. YU Chenxi,XIONG Kangning,CHEN Hu. Sustainable utilization of water resources under the drought disaster in karst valley area:A case study of Dingtan watershed in the Huajiang demonstration zone[J].Journal of Guizhou Normal University (Natural Sciences),2013,31(1):1.
[19]
张信宝,王世杰,孟天友.石漠化坡耕地治理模式[J].中国水土保持,2012(9):41. ZHANG Xinbao, WANG Shijie, MENG Tianyou. Management model of rocky desertification sloping land[J].Soil and Water Conservation in China,2012(9):41.
[20]
陈群利,姚建陆,孟天友.喀斯特山区坡耕地整治工程效益分析[J].中国水土保持,2007(7):27. CHEN Qunli,YAO Jianlu,MENG Tianyou. Benefit analysis of slope land improvement project in karst mountain area[J].Soil and Water Conservation in China,2007(7):27.
[21]
熊康宁.喀斯特石漠化的遥感-GIS典型研究——以贵州省为例[M].北京:地质出版社,2002:23. XIONG Kangning. A typical study of remote sensing GIS on karst rocky desertification:A case study of Guizhou Province[M].Beijing:Geological Publishing House,2002:23.
[22]
王霖娇,李瑞,盛茂银.典型喀斯特石漠化生态系统土壤有机碳时空分布格局及其与环境的相关性[J]. 生态学报,2017,37(5):1367. WANG Linjiao,LI Rui,SHENG Maoyin. Distribution of soil organic carbon related to environmental factors in typical rocky desertification ecosystems[J].Acta Ecologica Sinica,2017,37(5):1367.
[23]
鲍士旦.土壤农化分析(第三版)[M].北京:中国农业出版社,2000:30. BAO Shidan. Soil agro-chemistrical analysis(3rd Edition)[M]. Beijing:China Agriculture Press,2000:30.
[24]
宋希娟,王克林,刘淑娟,等.桂西北喀斯特地区不同土地利用方式土壤的有机碳含量及养分特征[J].湖南农业大学学报(自然科学版),2013,39(6):655. SONG Xijuan,WANG Kelin,LIU Shujuan,et al. Soil organic carbon and nutrients content at different land use types in the karst region of Northwest Guangxi[J].Journal of Hunan Agricultural University(Natural Sciences),2013,39(6):655.
[25]
王丽丽,宋长春,葛瑞娟,等.三江平原湿地不同土地利用方式下土壤有机碳储量研究[J].中国环境科学,2009,29(6):656. WANG Lili,SONG Changchun,GE Ruijuan,et al. Soil organic carbon storage under different landuse types in Sanjiang Plain[J].China Environmental Science,2009,29(6):656.
[26]
薛志婧,侯晓瑞,程曼,等.黄土丘陵区小流域尺度上土壤有机碳空间异质性[J].水土保持学报,2011,25(3):160. XUE Zhijing,HOU Xiaorui,CHENG Man,et al. Spatial variability of soil organic carbon in catchment scale of loess hilly area[J].Journal of Soil and Water Conservation,2011,25(3):160.
[27]
薛志婧,马露莎,安韶山,等.黄土丘陵区小流域尺度土壤有机碳密度及储量[J].生态学报,2015,35(9):2917. XUE Zhijing,MA Lusha,AN Shaoshan,et al. Soil organic carbon density and stock at the catchment scale of a hilly region of the Loess Plateau[J].Acta Ecologica Sinica,2015,35(9):2917.
[28]
李龙,吴丽芝,姚云峰,等.小流域土壤有机碳含量的空间变异特征研究:以内蒙古赤峰市黄花甸子流域为例[J].水土保持研究,2013,20(5):18. LI Long,WU Lizhi,YAO Yunfeng,et al. Study on spatial variations of soil organic carbon in small watershed:Taking Huanghuadianzi watershed as an example[J].Research of Soil and Water Conservation,2013,20(5):18.
[29]
王玉刚,肖笃宁,李彦,等.三工河流域绿洲土壤有机碳的空间分布[J].中国沙漠,2011,31(1):101. WANG Yugang,XIAO Duning,LI Yan,et al. Spatial distribution of oasis soil organic carbon in the Sangong river catchment, Xinjiang, China[J].Journal of Desert Research,2011,31(1):101.
[30]
熊康宁,周文龙,龙健,等.喀斯特石漠化综合治理区表层土壤有机碳时空动态特征与趋势探讨[J].中国岩溶,2011,30(4):383. XIONG Kangning,ZHOU Wenlong,LONG Jian,et al. Spatial-temporal dynamic features and tendency of the topsoil organic carbon in integrated rehabilitating karst rocky desert[J].Carsologica Sinica,2011,30(4):383.
[31]
盛茂银,刘洋,熊康宁.中国南方喀斯特石漠化演替过程中土壤理化性质的响应[J].生态学报,2013,33(19):6303. SHENG Maoyin,LIU Yang,XIONG Kangning. Response of soil physical-chemical properties to rocky desertification succession in South China Karst[J].Acta Ecologica Sinica,2013,33(19):6303.
[32]
魏兴琥,徐喜珍,雷俐,等.石漠化对峰丛洼地土壤有机碳储量的影响:以广东英德市岩背镇为例[J]. 中国岩溶,2013,32(4):371. WEI Xinghu,XU Xizhen,LEI Li,et al. The effect of rocky desertification on the soils organic carbon storage in Karst peak-cluster:A case study in Yanbei town, Yingde city, Guangdong province[J].Carsologica Sinica,2013,32(4):371.
[33]
吴清林,梁虹,熊康宁,等.石漠化环境水土综合整治与山地混农林业前沿理论与对策[J].水土保持学报,2018,32(2):11. WU Qinglin, LIANG Hong, XIONG Kangning, et al. Frontier theories and countermeasures for integrated regulation of soil and water loss and mountainous agroforestry in rocky desertification environment[J].Journal of Soil and Water Conservation,2018,32(2):11.
[34]
颜萍,熊康宁,檀迪,等.喀斯特石漠化治理不同水土保持模式的生态效应研究[J].贵州师范大学学报(自然科学版),2016,34(1):1. YAN Ping, XIONG Kangning, TAN Di, et al. Ecological effects of different soil and water conservation modes in Karst rocky desertification control[J].Journal of Guizhou Normal University(NaturalSciences),2016,34(1):1.
[35]
赵昌平,王景燕,龚伟,等.四川盆北地震重灾区农林复合模式的土壤培肥改土效果[J].中国农业科学,2016,49(15):2999. ZHAO Changping, WANG Jingyan, GONG Wei, et al. Soil amendment and enrichment efficiency of Agro-Forestry models in serious earthquake region of northern Sichuan basin[J].Scientia Agricultura Sinica,2016,49(15):2999.
[36]
徐海,朴河春,洪业汤.喀斯特地区土壤表层CO2释放通量的影响因素Ⅰ:规律[J].生态学杂志,2003,22(2):12. XU Hai, PIAO Hechun, HONG Yetang. Factors influencing CO2 flux of soil surface in karst area[J].Chinese Journal of Ecology,2003,22(2):12.
[37]
但文红.喀斯特峡谷农业可持续发展模式研究:以贵州省花江峡谷为例[J].中国岩溶,1999,18(3):56. DAN Wenhong. The study on the sustainable agriculture development pattern in karst gorge region:Taking the Huajiang gorge as an example[J].Carsologica Sinica,1999,18(3):56.
[38]
龙健,李娟,汪境仁.贵州中部岩溶丘陵区不同土地利用和管理方式对土壤肥力的影响[J].土壤通报,2006,37(2):2249. LONG Jian,LI Juan, WANG Jingren. Effects of land use and management on soil fertility in the middle karst region of Guizhou province[J].Chinese Journal of Soil Science,2006,37(2):2249.
2021, Vol. 19 
