Responses of soil extracellular enzymes to nitrogen and phosphorus additions between temperate and subtropical forests

The study was conducted at Changbai Mountain temperate native forest (hereafter “CB temperate forest”, 42°24′2′′N, 128°05′42′′E) and Dinghu Mountain subtropical secondary forest (hereafter “DH subtropical forest”, 23°9′41′′N, 112°32′36′′E). We measured soil physiochemical properties and extracellular enzyme activities involved in the degradation of soil organic C, N, and P. Five hydrolase activities including β-1,4glucosidase (βG), β-1,4-xylosidase (BX), cellobiohydrolase (CBH), β-1,4-N-acetylglucosaminidase (NAG) and acid phosphatase (ACP), and two oxidase activities including polyphenol oxidase (PPO) and peroxidase (PER) were assayed. All enzyme activities were calculated based on substrate decomposition rate (nmol g-1 h-1). The datasets of soil physiochemical properties and extracellular enzyme activities are provided here.

本研究于长白山温带原生林（以下简称“CB温带林”，地理坐标为42°24′2′′N，128°05′42′′E）和鼎湖山亚热带次生林（以下简称“DH亚热带林”，地理坐标为23°9′41′′N，112°32′36′′E）进行。研究者对土壤的物理化学性质以及参与土壤有机碳、氮、磷降解过程的胞外酶活性进行了测量。具体包括五种水解酶活性，即β-1,4葡萄糖苷酶（βG）、β-1,4-木糖苷酶（BX）、纤维二糖水解酶（CBH）、β-1,4-N-乙酰葡萄糖胺酶（NAG）和酸性磷酸酶（ACP），以及两种氧化酶活性，即多酚氧化酶（PPO）和过氧化物酶（PER）。所有酶活性均基于底物分解速率（nmol g-1 h-1）进行计算。此处提供土壤物理化学性质和胞外酶活性的数据集。