干旱区生态环境知识资源中心(Arid): 人工防护林对风沙土有机碳动力学的影响

Arid

	人工防护林对风沙土有机碳动力学的影响
其他题名	Effects of Artificial Shelter Forest on Dynamic Change of Organic Carbon Pool of Aeolian Sandy Soil
	王迎菊 1; 靳正忠 1; 雷加强1 ; 王永东 1; 付庆龙 2
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2017
卷号	34 期号:3 页码:495-503
中文摘要	选取塔里木沙漠公路沿线定植年限为5、7、10、13、16 a的防护林,运用物理化学提取法及傅里叶变换红外光谱仪,研究人工防护林对风沙土发育过程中土壤有机碳动力学的影响。结果表明: ①随定植年限增加,土壤碳储量变化不大; ②土壤有机碳在0 ~ 50 cm随深度增加而降低, 50 cm以下变化不大; ③随防护林定植年限的增加,表层土壤(0 ~ 10 cm)中总有机碳(TOC) 、微团聚体有机碳(OC_(MIA) ) 、腐殖质有机碳(OC_(HS) ) 、抗氧化性(OC_(NaClO) )和抗酸解性有机碳(OC_(HCl) )均有所升高,其中TOC、OC_(MIA)、OC_(HS)逐年增加,而OC_(NaClO)和OC_(HCl)在5 ~ 7 a时增加较快,以后趋于稳定,且各碳组分(OC_(HCl)除外)在不同定植年限防护林风沙土间的差异极显著(P < 0.01),OC_(HCl)差异显著(0.01 < P < 0.05); ④所有碳组分极显著相关,其中OC_(MIA)、OC_(HS)与TOC的相关性比OC_(HCl)、OC_(NaClO)高; ⑤惰性碳库中OC_(MIA)和OC_(NaClO)占总有机碳的比例较高,OC_(HS)相对含量随定植年限增加而升高; ⑥腐殖质结构中C = O相对含量(C = O/C-O-C)先降低后升高,脂族链聚亚甲基碳含量占末端甲基碳的比例(CH_2 /CH_3 ) 7 a时最高,后3个年限变化不大。因此,人工防护林引起了土壤有机碳累积,特别是惰性碳库在表层累积,腐殖化程度增加,提高了土壤固碳能力并促进了风沙土的发育。
英文摘要	This study investigated the dynamic change of organic carbon pool of aerolian sandy soil in the shelter belts planted for 5,7, 10, 13 and 16 years respectively along the Taklimakan Desert Highway. The results are as follows: ① The total organic carbon content was changed slightly with the increase of plantation years; ② The soil organic carbon content was decreased only in soil layer of 0 - 50 cm in depth,and changed slightly in soil layer deeper than 50 cm; ③ The change of topsoil (0 - 10 cm) showed that the contents of total soil organic carbon (TOC),micro-aggregate organic carbon (OC_(MIA) ),humus organic carbon (OC_(HS) ), resistance to oxidation carbon (OC_(NaClO) ) and resistance to hydrolysis carbon (OC_(HCl) ) were increased with the increase of plantation years,TOC, OC_(MIA) and OC_(HS) were increased year by year,and OC_(NaClO) and OC_(HCl) were increased after the plantation for 5 to 7 years. Except OC_(HCl),a ll other carbon fractions were changed with the increase of plantation years (P < 0.01),and OC_(HCl) was changed with significant difference (0.01 < P < 0.05); ④ There were the significant correlations among all kinds of SOC fractions, in which the correlations between OC_(MIA) and TOC,and OC_(HS) and TOC were higher than those between OC_(HCl) and TOC,and OC_(NaClO) and TOC; ⑤ The proportions of content of OC_(MIA) and OC_(NaClO) were higher than those of OC_(HS) and OC_(HCl),and the relative content of OC_(HS) was increased with the increase of plantation years; ⑥ The relative content of functional C = O groups (C = O/C-O-C) was decreased at first and then increased, and the ratio of polymerization methylene in carbon branched chain to methyl at the end of the carbon chain (CH_2 /CH_3 ) was the highest in the 7-year-old shelter forest. This indicated that the soil organic carbon accumulation occurred in the artificial shelter forest,especially the inert carbon pool accumulation in topsoil,and the humufication degree was increased. Thus the soil carbon sequestration capacity and the aeolian sandy soil development could be improved.
中文关键词	人工防护林 ; 风沙土 ; 植被定植 ; 腐殖质 ; 惰性碳 ; 碳动态
英文关键词	aerolian sandy soil vegetation plantation humus inert carbon pool carbon dynamics
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:5990102
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235985
作者单位	1.中国科学院新疆生态与地理研究所, 乌鲁木齐, 新疆 830011, 中国; 2.中国科学院大学, 北京 100039, 中国
推荐引用方式 GB/T 7714	王迎菊,靳正忠,雷加强,等. 人工防护林对风沙土有机碳动力学的影响[J]. 中国科学院新疆生态与地理研究所,2017,34(3):495-503.
APA	王迎菊,靳正忠,雷加强,王永东,&付庆龙.(2017).人工防护林对风沙土有机碳动力学的影响.干旱区研究,34(3),495-503.
MLA	王迎菊,et al."人工防护林对风沙土有机碳动力学的影响".干旱区研究 34.3(2017):495-503.