文献类型：期刊文献

中文题名：土壤温度和含水量变化对南亚热带常绿阔叶林土壤性质的影响

英文题名：The Effect of Soil Temperature and Moisture Content Variations on Soil Properties in a Subtropical Evergreen Broadleaf Forest

作者：付志高[1] 肖以华[1] 许涵[1] 史欣[1] 余海波[2] 贲春丽[1] 杨紫浓[1] 李明[1]

第一作者：付志高

机构：[1]中国林业科学研究院热带林业研究所,广州510520;[2]广东新丰云髻山省级自然保护区管理处

年份：2024

卷号：52

期号：5

起止页码：94-101

中文期刊名：东北林业大学学报

外文期刊名：Journal of Northeast Forestry University

收录：CSTPCD;;北大核心:【北大核心2023】；CSCD:【CSCD_E2023_2024】；

基金：中央级公益性科研院所基本科研业务费专项资金项目(CAFYBB2018ZA002);广东省林业生态监测网络平台建设项目(2022CG646);广东省基础与应用基础研究基金项目(2021A1515010614);广东珠江三角洲森林生态系统国家定位观测研究站项目(0144135)。

语种：中文

中文关键词：年际变化;铵态氮;硝态氮;土壤温度;常绿阔叶林;土壤含水量

外文关键词：Interannual variation;Ammonium nitrogen;Nitrate nitrogen;Soil temperature;Evergreen broadleaf forest;Soil moisture content

分类号：S714.5

摘要：研究森林土壤铵态氮(NH_(4)^(+)-N)和硝态氮(NO_(3)^(-)-N)质量分数的年际动态及其对环境变化的影响,对预测森林生态系统的结构和功能具有重要作用。应用南亚热带常绿阔叶林连续10 a的土壤理化性质监测,揭示土壤有效氮质量分数对土壤温度和水分的影响。结果表明:(1)土壤NH_(4)^(+)-N和NO_(3)^(-)-N质量分数年际间变化对干湿季节性敏感,湿季NH_(4)^(+)-N质量分数为9.41~15.59 mg·kg^(-1)、NO_(3)^(-)-N质量分数为24.50~36.18 mg·kg^(-1),干季NH_(4)^(+)-N质量分数为6.48~10.19 mg·kg^(-1)、NO_(3)^(-)-N质量分数为22.75~30.09 mg·kg^(-1),干湿季差异显著。(2)土壤温度和含水量对NH_(4)^(+)-N质量分数变异解释率为57%,对NO_(3)^(-)-N质量分数变异解释率为28%,NH_(4)^(+)-N质量分数与气温显著正相关,湿季降水量与NH_(4)^(+)-N和NO_(3)^(-)-N质量分数呈负相关关系;干季降水量与NH_(4)^(+)-N质量分数正相关,但与NO_(3)^(-)-N质量分数负相关;干季低温条件下,土壤含水量与NH_(4)^(+)-N质量分数负相关。(3)土壤温湿度、土壤养分质量分数的变化显著影响土壤NH_(4)^(+)-N和NO_(3)^(-)-N累积;湿季全氮和易氧化碳分别是NH_(4)^(+)-N和NO_(3)^(-)-N累积的主导因子;干季土壤微生物生物量碳和微生物生物量氮为主导因子。
The study of the interannual dynamics of soil ammonium nitrogen (NH_(4)^(+)-N) and nitrate nitrogen (NO_(3)^(-)-N) content, and their impact on environmental changes, plays a crucial role in predicting the structure and functionality of forest ecosystems. This research applies a 10-year monitoring of soil physicochemical properties in a subtropical evergreen broadleaf forest to reveal the influence of soil available nitrogen content on soil temperature and moisture. The results showed that: (1) The interannual variation of soil NH_(4)^(+)-N and NO_(3)^(-)-N content is sensitive to seasonal changes, with NH_(4)^(+)-N content ranging from 9.41-15.59 mg·kg^(-1) and NO_(3)^(-)-N content ranging from 24.50-36.18 mg·kg^(-1) in the wet season, and NH_(4)^(+)-N content ranging from 6.48-10.19 mg·kg^(-1) and NO_(3)^(-)-N content ranging from 22.75-30.09 mg·kg^(-1) in the dry season, with significant differences between the two. (2) Soil temperature and moisture account for 57% of the variance in NH_(4)^(+)-N content and 28% in NO_(3)^(-)-N content. NH_(4)^(+)-N content shows a significant positive correlation with temperature, and a negative correlation with precipitation in the wet season for both NH_(4)^(+)-N and NO_(3)^(-)-N content. In the dry season, precipitation is positively correlated with NH_(4)^(+)-N content but negatively correlated with NO_(3)^(-)-N content, whereas under low-temperature conditions in the dry season, soil moisture is negatively correlated with NH_(4)^(+)-N content. (3) Significant changes in soil temperature, humidity, and nutrient content significantly impact the accumulation of soil NH_(4)^(+)-N and NO_(3)^(-)-N. Total nitrogen and readily oxidizable carbon in the wet season are the main factors contributing to NH_(4)^(+)-N and NO_(3)^(-)-N accumulation, while soil microbial biomass carbon and nitrogen in the dry season are the dominant factors.