干旱区生态环境知识资源中心(Arid): 咸水滴灌下塔里木沙漠公路防护林土壤生化作用强度及微生物生态特征

Arid

	咸水滴灌下塔里木沙漠公路防护林土壤生化作用强度及微生物生态特征
其他题名	Biochemical intensity and microbial eco-characterization of soils irrigated with saline water from the Tarim Desert Highway shelter-belt
	靳正忠; 雷加强; 李生宇; 徐新文
来源期刊	生态学报
ISSN	1000-0933
出版年	2017
卷号	37 期号:12 页码:4091-4099
中文摘要	土壤生化作用强度是表征土壤生物学活性的重要指标。选择传统研究方法,从氨化作用、硝化作用、固氮作用、纤维素分解、呼吸作用以及酶活性6个方面,揭示了咸水滴灌下塔里木沙漠公路防护林地土壤生化作用强度的分异规律。结果表明,(1)随防护林定植年限的增大,土壤氨化作用、固氮作用、纤维素分解和呼吸作用的强度均明显增强,其中氨化作用和呼吸作用变化尤为明显;而硝化作用强度有所减弱。 (2)0- 50 cm土体内,随土壤深度增大,生化作用强度提高,氨化作用、硝化作用、固氮作用、纤维素分解和呼吸作用强度的垂直差异均达极显著水平(F > F_(0.01))。(3)随防护林定植年限的增大,不同土壤酶活性的变化各异,其中,过氧化氢酶活性显著增大(F > F_(0.01)),纤维素酶和蔗糖酶的活性明显提高(F > F_(0.05)),而蛋白酶、磷酸酶和脲酶的活性变化不大(F
英文摘要	Biochemical intensity of soil is an important index for characterizing biological activity. In this study, traditional research methods were employed to determine the soil biochemical characteristics of the Tarim Desert Highway shelter-belt from six aspects, including ammonification,nitrification,azotification,cellulose decomposition,respiration, and enzymatic activity. The main experimental results were as follows:(1) With increasing years since planting, ammonification and respiration showed the greatest improvements; azotification and cellulose decomposition also showed significant improvements, but nitrification was weakened. (2) Vertical differences in ammonification, nitrification, azotification, cellulose decomposition, and respiration in the 0-50 cm soil layer reached highly significant levels (F > F_(0.01)), and biochemical activity of the soil increased with depth. (3) As years since planting increased, catalase activity showed the greatest increase (F > F), cellulose and invertase activity also significantly increased (F > F_(0.05)), and protease, phosphatase, and urease activity only minimally increased (F < F_(0.05)). (4) The optimal regression equations between different biochemical intensity factors and soil environmental factors differed,but the regression determination coefficients were >0.95. Total salt, total nitrogen, and available nitrogen were included in all of the regression equations and were key factors in the determination of biochemical intensity of the soil in the Tarim Desert Highway shelter-belt. Therefore, in the hinterland of the Taklamakan Desert,biochemical intensity of soils from the shelter-belt lands that were drip-irrigated with saline water exhibited an increasing trend. This knowledge will aid in the scientific management of the shelter-belt project.
中文关键词	流动沙漠 ; 防护林地 ; 咸水滴灌 ; 定植年限 ; 土壤生化强度
英文关键词	mobile desert shelter-belt land saline water irrigation plantation time soil biochemical intensity
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:6015862
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/2XILL650/236486
作者单位	中国科学院新疆生态与地理研究所, 乌鲁木齐, 新疆 830011, 中国
推荐引用方式 GB/T 7714	靳正忠,雷加强,李生宇,等. 咸水滴灌下塔里木沙漠公路防护林土壤生化作用强度及微生物生态特征[J]. 中国科学院新疆生态与地理研究所,2017,37(12):4091-4099.
APA	靳正忠,雷加强,李生宇,&徐新文.(2017).咸水滴灌下塔里木沙漠公路防护林土壤生化作用强度及微生物生态特征.生态学报,37(12),4091-4099.
MLA	靳正忠,et al."咸水滴灌下塔里木沙漠公路防护林土壤生化作用强度及微生物生态特征".生态学报 37.12(2017):4091-4099.