2009-2018年西南典型紫色土丘陵区土壤含水量变化数据集

A dataset of soil moisture content change in typical purple soil hilly areas in southwest China from 2009 to 2018

土壤水是农田土壤生态系统中颗粒、胶体和物质运移的主要载体,也是土壤—植物—大气连续体物质交换和能量传导的关键因子,对作物生理生长特性和生态系统服务功能有着重要影响。四川盐亭农田生态系统国家野外科学观测研究站(简称盐亭站)是长江上游唯一的国家农田生态系统科学观测研究站,代表了中亚热带四川盆地紫色土丘陵区农田生态系统。该站地处中国地势第二、三阶梯的过渡地带,位于长江上游生态屏障的最前沿,具有特殊的生态敏感性。本数据集涉及盐亭站2009-2018年2个长期监测样地,分别是综合观测场水分观测样地(耕地)和综合气象观测场水分样地(草地)的不同土层深度土壤质量含水量、体积含水量数据。借助长期监测数据可研究典型丘陵区农田生态系统生态水文过程、水量平衡和物质循环规律,并揭示土壤水分循环对气候变化的敏感性。

Soil water is the main carrier of particle,colloid and substance transport in farmland soil ecosystem.Besides,it is also a key factor for material exchange and energy transfer in soil-plant-atmosphere continuum,and has an important influence on the physiological growth characteristics and ecosystem service functions of crops.Yanting Station,representing the farmland ecosystem in purple soil hilly area of Sichuan Basin in the middle subtropical zone,is the only national scientific observation and research station of the farmland ecosystem in the upper reaches of the Yangtze River.Yanting Station is located in the transitional zone of the second and third ladders of China’s terrain,and at the forefront of the ecological barrier in the upper reaches of the Yangtze River.Therefore,it has special ecological sensitivity.This dataset includes the mass moisture content and volume moisture content of soil at different depths on two long-term monitoring sample plots:water observation sites of the Comprehensive Observation Field(cultivated land);water sampling sites of the Comprehensive Meteorological Observation Field(grassland)at Yanting Station from 2009 to 2018.Long-term monitoring data can help study the eco-hydrological process,water balance and material cycle regulation of the farmland ecosystem in typical hilly areas.Furthermore,long-term monitoring dataset can help reveal the sensitivity of soil water cycle to global climate change.