Wang Qiong, Wu Yan, Wang Wenjie, Zhong Zhaoliang, Pei Zhongxue, Ren Jie, Wang Huimei, Zu Yuangang
Key Laboratory of Forest Plant Ecology, Northeast Forestry University, Harbin 150040, China.
Key Laboratory of Forest Plant Ecology, Northeast Forestry University, Harbin 150040, China ; Daqing Normal University, Daqing 163712, China.
ScientificWorldJournal. 2014;2014:160403. doi: 10.1155/2014/160403. Epub 2014 Apr 6.
Concentration of Glomalin Related Soil Protein is reportedly close related to soil functions, but few data is available for GRSP compositional variations and function related to soil properties. In this paper, soils from 0-20 cm, 20-40 cm, 40-60 cm, 60-80 cm, and 80-100 cm layers were collected in 72 poplar shelterbelts in Songnen Plain (6 regions) for implementing this data shortage. GRSP mainly consists of stretching of O-H, N-H, C-H, C=O, COO-, C-O, and Si-O-Si and bending of C-H and O-H. It has seven fluorescent substances of tyrosine-like protein, tryptophan-like protein, fulvic acid-like, humic acid-like, soluble microbial byproduct-like, nitrobenzoxadiazole-like, and calcofluor white-like, with characteristic X-ray diffraction peak at 2 θ = 19.8° and 129.3 nm grain size as well as 1.08% low crystallinity. Large spatial variations (intersite and intrasite down profile) were found in either GRSP concentration or these compositional traits. Regression analysis clearly manifested that soil pH should be responsible for these variations. However, negative relations between soil bulk density and GRSP quantity were observed, but not its compositional traits. These basic data in poplar shelterbelt forests are good for understanding the underlying mechanism of GRSP in soil functional maintenance.
据报道，球囊霉素相关土壤蛋白的浓度与土壤功能密切相关，但关于球囊霉素相关土壤蛋白的组成变化及其与土壤性质相关功能的数据却很少。本文在松嫩平原（6个区域）的72条杨树防护林带中采集了0-20厘米、20-40厘米、40-60厘米、60-80厘米和80-100厘米土层的土壤，以填补这一数据空白。球囊霉素相关土壤蛋白主要由O-H、N-H、C-H、C=O、COO-、C-O和Si-O-Si的伸缩振动以及C-H和O-H的弯曲振动组成。它有七种荧光物质，分别是类酪氨酸蛋白、类色氨酸蛋白、类富里酸、类腐殖酸、类可溶性微生物副产物、类硝基苯并恶二唑和类钙黄绿素，在2θ = 19.8°处有特征X射线衍射峰，粒径为129.3纳米，结晶度低至1.08%。无论是球囊霉素相关土壤蛋白的浓度还是这些组成特征，都存在较大的空间变异（站点间和站点内垂直剖面）。回归分析清楚地表明，土壤pH值是造成这些变异的原因。然而，虽然观察到土壤容重与球囊霉素相关土壤蛋白含量呈负相关，但与组成特征无关。杨树防护林带的这些基础数据有助于理解球囊霉素相关土壤蛋白在维持土壤功能中的潜在机制。
