Population Structure Characteristics and Survival Status of Natural Platycladus Orientalis in Loess Hilly Region
Journal Title: Bulletin of Soil and Water Conservation - Year 2023, Vol 43, Issue 6
Abstract
[Objective] Population structure characteristics and survival status of natural Platycladus orientalis in the loess hilly region were determined in order to provide a scientific basis for high-quality and sustainable development of forest grassland in this area. [Methods] Characteristics were quantitatively analyzed by using a dynamic change index based on a static life table combined with spectral analysis on the time scale and time series simulation prediction to carry out a comprehensive survival analysis of this cypress species. [Results] ① The height, crown width, and diameter structure of the P. orientalis population indicated that young trees were abundant. ② The survival curve of the P. orientalis population was close to Deevey-Ⅱ type, and the population was sensitive to external interference. ③ Population dynamics were characterized by strong viability in the early stage, stable growth in the middle stage, and decline in viability in the later stage. Time series simulation and prediction analysis showed that the population of P. orientalis showed different degrees of increasing trend and strong growth recovery ability. [Conclusion] The natural population structure of P. orientalis in the loess hilly region was stable and growing, and the survival curve was close to that of Deevey-Ⅱ type.
Authors and Affiliations
Ting Sun, Gangtie Li, Yunxia Ma, Jiajia Song, Jingjie Guo, Zhonghou Gu, Kun Liu, Zhilong Li, Min Li
Research Progress and Hotspots of Biomechanical Properties of Plants in Relation to Soil and Water Conservation
[Objective] Biomechanical properties of plants are an important part of studies dealing with the use of plants for soil and water conservation because of the important role plants play in soil stabilization, water conser...
Comparison of Particle Size Distributions Determined by Pipette Method and Scanning Electron Microscopy for Typical Soils in Water Erosion Region of China
[Objective] The particle size distributions (PSD) of different soils measured by scanning electron microscopy (SEM) and by the pipette method (PM) in the water erosion region of China was compared in order to provide a r...
Spatiotemporal Characteristics of Soil Conservation and Protection Vacancies at Ganzhou City of Jiangxi Province
[Objective] The spatiotemporal pattern of soil conservation was studied and the protection vacancy areas were identified in order to provide references for regional development planning and ecological protection. [Method...
Spatiotemporal Differences of Agricultural Carbon Income and Expenditure, and Carbon Compensation Potential of Counties in Hunan Province
[Objective] The temporal and spatial differences of agricultural carbon budget and carbon compensation potential were analyzed based on the dual perspectives of carbon emission and carbon absorption in order to provide a...
Difference Between Ecological Supply and Demand of Cultivated Land Based on Productive-Living-Ecological Functions
[Objective] The characteristics of cultivated land ecological supply and demand were analyzed in order to provide theoretical surpport for ensuring the sustainable supply of ecological functions of cultivated land and to...