草地群落多样性和生态系统碳氮循环对氮输入的非线性响应及其机制
杨元合1,2,*(
), 张典业1, 魏斌1,2, 刘洋1,3, 冯雪徽1,2, 毛超1,4, 徐玮婕1,2, 贺美1, 王璐1,2, 郑志虎1,2, 王媛媛1, 陈蕾伊1, 彭云峰1
), 张典业1, 魏斌1,2, 刘洋1,3, 冯雪徽1,2, 毛超1,4, 徐玮婕1,2, 贺美1, 王璐1,2, 郑志虎1,2, 王媛媛1, 陈蕾伊1, 彭云峰1
Nonlinear responses of community diversity, carbon and nitrogen cycles of grassland ecosystems to external nitrogen input
YANG Yuan-He1,2,*(), ZHANG Dian-Ye1, WEI Bin1,2, LIU Yang1,3, FENG Xue-Hui1,2, MAO Chao1,4, XU Wei-Jie1,2, HE Mei1, WANG Lu1,2, ZHENG Zhi-Hu1,2, WANG Yuan-Yuan1, CHEN Lei-Yi1, PENG Yun-Feng1
), ZHANG Dian-Ye1, WEI Bin1,2, LIU Yang1,3, FENG Xue-Hui1,2, MAO Chao1,4, XU Wei-Jie1,2, HE Mei1, WANG Lu1,2, ZHENG Zhi-Hu1,2, WANG Yuan-Yuan1, CHEN Lei-Yi1, PENG Yun-Feng1
图1. 青藏高原高寒草原多水平氮添加实验平台景观(刘洋摄)。该实验平台隶属于中国科学院植物研究所杨元合课题组, 位于青海省刚察县三角城种羊场, 开始于2013年5月, 涉及8个氮添加水平(0, 1, 2, 4, 8, 16, 24, 32 g·m-2·a-1), 所施氮肥类型为NH4NO3。
Fig. 1. Multi-level nitrogen (N) manipulation experiment in an alpine steppe on the Qingzang Plateau (photo credit: LIU Yang). This experiment was maintained by Dr. YANG Yuan-He’s group in Institute of Botany, Chinese Academy of Sciences, and located in Sanjiaocheng sheep farm, Gangca County, Qinghai Province. It was conducted since May 2013, with eight N levels (0, 1, 2, 4, 8, 16, 24, 32 g·m-2·a-1). The form of N fertilizer is NH4NO3.
