太行山低山丘陵区人工林表层土壤有机碳和全氮分布特征
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摘要
为了探讨太行山低山丘陵区林型和坡位对表层土壤有机碳(SOC)和全氮(TN)含量的影响,本试验研究了侧柏、栓皮栎人工林和撂荒地(对照)表层(0～20 cm)土壤SOC和TN含量的分布特征.结果表明:同一林型或坡位条件下,土壤SOC和TN含量均呈现随着土层的加深逐渐下降的趋势.不同坡位条件下,表层土壤SOC和TN含量在有林地(栓皮栎、侧柏)均呈现坡上>坡中>坡下的趋势,在撂荒地则呈现坡下>坡上>坡中的趋势.不同林型条件下,坡上、坡中SOC和TN含量整体呈现栓皮栎人工林>侧柏人工林>撂荒地的趋势,坡下SOC和TN含量整体呈现出撂荒地最大的趋势.C/N值在上坡位和中坡位呈现出栓皮栎人工林>侧柏人工林>撂荒地的趋势,在下坡位呈现出栓皮栎人工林>撂荒地>侧柏人工林的趋势;同一林型条件下,不同坡位C/N存在差异,但不显著.表明太行山低山丘陵区栓皮栎人工林的适应性最强.
To explore the effects of forest types and slope positions on the content of soil organic carbon( SOC) and total nitrogen( TN) in the lower hilly area of Taihang Mountains,we examined the distribution pattern of SOC and TN contents in Quercus variabilis plantation( Qo),and Platycladus orientalis plantation( Po),and abandoned land( Al). The results showed that in the same forest type or slope position,the contents of SOC and TN gradually decreased with increasing soil depth. Under different slope conditions,the contents of SOC and TN showed the tendency of upperslope( U) > middle-slope( M) > lower-slope( L) in the planted forests( Qo and Po),but showed the tendency of L>U>M in Al. Under different forest types,the contents of SOC and TN in the U and M showed the trend of Qo > Po > Al. At the LS,the contents of SOC and TN of Al were the highest. The C/N ratio followed an order of Qo>Po> Al at U and M,while Qo>Al> Po at L. Within the same forest type,C/N of different slopes was different,but not significant. Our results suggested that the adaptability of the Qo plantation is the best in the lower hilly area of Taihang Mountains.
To explore the effects of forest types and slope positions on the content of soil organic carbon( SOC) and total nitrogen( TN) in the lower hilly area of Taihang Mountains,we examined the distribution pattern of SOC and TN contents in Quercus variabilis plantation( Qo),and Platycladus orientalis plantation( Po),and abandoned land( Al). The results showed that in the same forest type or slope position,the contents of SOC and TN gradually decreased with increasing soil depth. Under different slope conditions,the contents of SOC and TN showed the tendency of upperslope( U) > middle-slope( M) > lower-slope( L) in the planted forests( Qo and Po),but showed the tendency of L>U>M in Al. Under different forest types,the contents of SOC and TN in the U and M showed the trend of Qo > Po > Al. At the LS,the contents of SOC and TN of Al were the highest. The C/N ratio followed an order of Qo>Po> Al at U and M,while Qo>Al> Po at L. Within the same forest type,C/N of different slopes was different,but not significant. Our results suggested that the adaptability of the Qo plantation is the best in the lower hilly area of Taihang Mountains.
引文
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[17] Han F-P(韩凤朋),Zheng J-Y(郑纪勇),Zhang X-C(张兴昌). Plant root system distribution and its effect on soil nutrient on slope land converted from farmland in the Loess Plateau. Transactions of the Chinese Society of Agricultural Engineering(农业工程学报),2009,25(2):50-55(in Chinese)
[18] Li P(李平). The Variations of Soil Labile Organic Carbon in Different Plantations in south of Jiangsu Province. Master Thesis. Nanjing:Nanjing Forestry University,2011(in Chinese)
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[20] Zhang J(张剑),Wang S-L(汪思龙),Wang Q-K(王清奎). Content and seasonal change in soil labile organic carbon under different forest covers. Chinese Journal of Eco-Agriculture(中国生态农业学报),2009,17(1):41-47(in Chinese)
[21] Wang SL,Hu JC,Hu ZG,et al. Effect of monospecific and mixed Cunninghamia lanceolata plantations on microbial community and two functional genes involved in nitrogen cycling. Plant and Soil,2010,327:413-428
[22] Bazot S,Ulff L,Blum,H,et al. Effects of elevated CO2concentration on rhizodeposition from Lolium perenne grown on soil exposed to 9 years of CO2enrichment. Soil Biology and Biochemistry,2006,38:729-736
[2] Du M-Y(杜满义),Fan S-H(范少辉),Qi L-H(漆良华),et al. Characteristics and coupling relationship of soil organic carbon and total nitrogen in different types of Phyllostachys pubescens stands. Journal of Soil and Water Conservation(水土保持学报),2010,24(4):198-202(in Chinese)
[3] Zhang T-D(张泰东),Wang C-K(王传宽),Zhang Q-Z(张全智). Vertical Variation in Soil Carbon,Nitrogen and Phosphorus and Its Stoichiometric Relationships in Five Forest Types in the Maoershan Region,Northeast China[EB/OL].(2017-08-18)[2018-10-01]. http://kns. cnki. net/kcms/detail/21. 1253. Q.20170818.1551.004.html(in Chinese)
[4] Gao W-J(郜文军),Wang Y-C(王印传),Huo X-L(霍习良),et al. The distributing of soil nutrients and correlation analysis in different altitudes and slope positions in mountain watershed. Chinese Agricultural Science Bulletin(中国农学通报),2008,24(3):248-252(in Chinese)
[5] Yuan Y(袁勇),Li X-Y(李小英),Liu X-M(刘晓梅),et al. Soil nutrient of evergreen broad-leaved forests in different slope aspects and slope positions in Nabanhe nature reserve. Journal of Northeast Forestry University(东北林业大学学报),2016,44(3):12-15(in Chinese)
[6] Liu S-J(刘淑娟),Zhang W(张伟),Wang K-L(王克林),et al. Spatiotemporal heterogeneity of topsoil nutrients in Karst Peak-Cluster depression area of Northwest Guangxi,China. Acta Ecologica Sinica(生态学报),2011,31(11):3036-3043(in Chinese)
[7] Wang P(王平),Zhang J-S(张劲松),Meng P(孟平),et al. Comparison of soil respiration variation characteristics between Quercus variabilis plantation and abandoned land in the south hilly region of North China.Chinese Journal of Agrometeorology(中国农业气象),2011,32(3):346-349(in Chinese)
[8] Huang H(黄辉),Meng P(孟平),Zhang J-S(张劲松),et al. Stomatal and environmental control on evapotranspiration in a plantation in the lower mountain areas of North China. Acta Ecologica Sinica(生态学报),2014,34(3):667-673(in Chinese)
[9] Guo S-L(郭胜利),Liu W-Z(刘文兆),Shi Z-Y(史竹叶),et al. Soil nutrients distribution and its relation to landform and vegetation at small watershed in semiarid area. Agricultural Research in the Arid Areas(干旱地区农业研究),2003,21(4):40-43(in Chinese)
[10] Fan W(樊魏),Tian C-Y(田朝阳). Technologies of drought-resistant afforestation and moisture management in the hilly region of Taihang Mountains. Journal of Zhejiang Forestry College(浙江林学院学报),2004,21(4):398-403(in Chinese)
[11] Bao S-D(鲍士旦). Soil Agrochemical Analysis. 3rd Ed. Beijing:China Agriculture Press,2000(in Chinese)
[12] Wang F(王芳),Huang M(黄玫),Sun X-H(孙希华),et al. Evaluation of soil nutrients for different forest types in Xing’an Mountains forest area. Bulletin of Soil and Water Conservation(水土保持通报),2013,33(1):182-187(in Chinese)
[13] Zhou Z-W(周志文),Pan J-J(潘剑君),Ju W-M(居为民),et al. Distribution of soil C:N ratio in three forest types on different slope positions in Mt. Shennongjia,China. Journal of Soil and Water Conservation(水土保持学报),2014,28(4):210-217(in Chinese)
[14] Zhang W(张伟),Chen H-S(陈洪松),Wang K-L(王克林),et al. Effects of planting pattern and bare rock ratio on spatial distribution of soil nutrients in Karst depression area. Chinese Journal of Applied Ecology(应用生态学报),2007,18(7):1459-1463(in Chinese)
[15] Wu M(吴敏),Liu S-J(刘淑娟),Ye Y-Y(叶莹莹),et al. Spatial heterogeneity and storage assessment method of surface soil organic carbon in high bulk-rock ratio slopes of Karst Regions. Chinese Journal of EcoAgriculture(中国生态农业学报),2015,23(6):676-685(in Chinese)
[16] Gao X-S(高雪松),Deng L-J(邓良基),Zhang S-R(张世熔). Soil physical properties and nutrient properties under different utilization styles and slope position.Journal of Soil and Water Conservation(水土保持学报),2005,19(2):53-56(in Chinese)
[17] Han F-P(韩凤朋),Zheng J-Y(郑纪勇),Zhang X-C(张兴昌). Plant root system distribution and its effect on soil nutrient on slope land converted from farmland in the Loess Plateau. Transactions of the Chinese Society of Agricultural Engineering(农业工程学报),2009,25(2):50-55(in Chinese)
[18] Li P(李平). The Variations of Soil Labile Organic Carbon in Different Plantations in south of Jiangsu Province. Master Thesis. Nanjing:Nanjing Forestry University,2011(in Chinese)
[19] Kalbitz K,Solinger S,Park JH,et al. Controls on the dynamics of dissolved organic matter in soil:A review.Soil Science,2000,165:277-304
[20] Zhang J(张剑),Wang S-L(汪思龙),Wang Q-K(王清奎). Content and seasonal change in soil labile organic carbon under different forest covers. Chinese Journal of Eco-Agriculture(中国生态农业学报),2009,17(1):41-47(in Chinese)
[21] Wang SL,Hu JC,Hu ZG,et al. Effect of monospecific and mixed Cunninghamia lanceolata plantations on microbial community and two functional genes involved in nitrogen cycling. Plant and Soil,2010,327:413-428
[22] Bazot S,Ulff L,Blum,H,et al. Effects of elevated CO2concentration on rhizodeposition from Lolium perenne grown on soil exposed to 9 years of CO2enrichment. Soil Biology and Biochemistry,2006,38:729-736