The six measured enzymes included cellobiohydrolase, β-1,4-xylosidase, β-1,4-glucosidase, β-1,4-N-acetylglucosaminidase, leucine aminopeptidase and alkaline phosphatase. We found that earth moisture, soil natural carbon, total nitrogen, total phosphorus, microbial biomass carbon and microbial biomass nitrogen reduced somewhat by 26.0%-88.5% with all the procedure for the desert grassland-shrubland anthropogenic change. All earth properties, except earth organic carbon and earth dampness in grassland side web site, had been 3.9%-82.3% higher under vegetation spots than those in bare interspaces in each site. The six extracellular enzyme tasks BMS1inhibitor also diminished by 22.1%-82.4% in the change procedure, especially for leucine aminopeptidase and alkaline phosphatase, showing significant decrease by 82.4% and 75.5%, correspondingly. All extracellular enzyme activities but β-1,4-N-acetylglucosaminidase in shrubland were significantly Secondary autoimmune disorders higher by 10.7%-42.7% under vegetation spots than those in bare interspaces in each website. The activities of six extracellular enzymes had been all positively correlated with one another. All of them were definitely correlated with soil properties. Moreover, activities among these earth extracellular enzymes responded much more absolutely towards the modifications of microbial biomass carbon, microbial biomass nitrogen, and total nitrogen in the process of anthropogenic transition.An experiment with four treatments of control (CK), N addition (100 kg N·hm-2·a-1), P addition (50 kg P·hm-2·a-1) and N + P (100 kg N·hm-2·a-1 + 50 kg P·hm-2·a-1) were carried out to examine the responses of plant height, floor diameter, top width, certain leaf area, and mortality of seedlings to N and P addition. Under P addition, development rates of plant height and surface diameter of seedlings diminished notably by 45.1% and 30.3%, correspondingly. Fertilization impacted the mortality of main constructive tree species. N addition somewhat increased seedling mortality of Castanopsis carlesii to 25.1percent. Fertilization treatment notably enhanced mortality of Castanopsis fargesii to 25.1%-31.3%, while N inclusion and P addition signi-ficantly paid down death of Schima superba and Machilus nanmu. Fertilization considerably reduced the significance worth of S. superba and C. fargesii when you look at the seedling community. N inclusion and P addition dramatically increased the significance worth of M. nanmu seedling. The combined N and P addition considerably decreased Shannon list and Simpson index of the seedling community. Seedling growth was mainly impacted by earth ammonium, readily available phosphorus, total nitrogen, canopy openness, and particular leaf area. Seedling mortality ended up being primarily affected by soil ammonium, offered phosphorus and canopy openness. Synthetically, N and P addition affected seedling growth primarily by controlling earth nitrogen and phosphorus availability and changing leaf practical characteristic. It accelerated the death of ectomycorrhizal tree types (C. carlesii and C. fargesii), changed the importance value of constructive species in seedling community, paid off types diversity, and ultimately changed neighborhood structure of person trees in subtropical secondary broad-leaved forest.From February 2018 to January 2019, a field test of simulated nitrogen (N) depo-sition ended up being carried out in Pinus armandii and Pinus yunnanensis plantations in the subalpine region of main Yunnan, Asia. The litterbag method ended up being utilized for in situ litter (leaf and twig) decomposition test in both plantations. Four quantities of N addition were used, i.e., control (CK, 0 g N·m-2·a-1), low nitrogen (LN, 5 g N·m-2·a-1), method nitrogen (MN, 15 g N·m-2·a-1), and high nitrogen (HN, 30 g N·m-2·a-1). The outcomes showed that the annual decomposition prices of leaf and twig in P. armandii had been Medial sural artery perforator 34.8% and 18.0%, that have been more than the 32.2% (leaf) and 16.1per cent (twig) in P. yunnanensis. Under N deposition, the LN therapy paid down the full time of 95% size loss of leaf and twig litter in P. armandii by 0.202 and 1.624 years, the MN treatment paid off by 0.045 and 1.437 years, as well as the HN therapy increased by 0.840 and 2.112 years, correspondingly. Into the P. yunnanensis plantation, the LN therapy decreased the time of 95% mass loss of leaf and twig litter by 0.766 and 4.053 many years, as the MN therapy increased by 0.366 and 0.455 many years, and also the HN treatment increased by 0.826 and 0.906 many years, respectively. Litter (leaf and twig) decomposition of both P. armandii and P. yunnanensis had been promoted by reasonable N treatment and inhibited by high letter treatment. The consequences of N deposition on litter decomposition of two plantations were dramatically correlated with the contents of cellulose and lignin in litter. To conclude, the responses of litter decomposition to N deposition primarily depended on the litter substrate, specially cellulose and lignin items.Soil enzymes are catalysts for organic matter decomposition, the kinetic traits of which are important signs of this catalytic overall performance of enzymes, with essential role in evalua-ting soil health quality. We examined the responses of soil enzyme kinetic variables to temperature modification as well as the difference qualities of these temperature sensitiveness (Q10) in Robinia pseu-doacacia plantation earth under three different vegetation zones regarding the Loess Plateau. The outcomes indicated that the potential optimum reaction rate (Vmax) in addition to half-saturation constant (Km) of alanine transaminase (ALT), leucine aminopeptidase (LAP) and alkaline phosphatase (ALP) all increased linearly with all the increasing incubation temperature. The zonal regularity of woodland area > forest-steppe zone > steppe zone was presented in Vmax. The heat sensitiveness of Vmax(Q10(Vmax)) ranged from 1.14 to 1.62, in addition to temperature sensitivity of Km(Q10(Km)) ranged from 1.05 to 1.47, with both values becoming low in forest-steppe zone than other plant life zones.