基于CASA模型的阿勒泰地区近10年植被NPP时空分布特征  

Spatiotemporal Distribution Characteristics of Vegetation NPP in the Past 10 Years Based on CASA Model in Altay Region

作　　者：崔瑶 王耀锋 程艳 付仁君 王悦 钱雪林 CUI Yao;WANG Yaofeng;CHENG Yan;FU Renjun;WANG Yue;QIAN Xuelin(School of Resources and Environment,Xinjiang Agricultural University,Urumqi Xinjiang 830052,China;Xinjiang Academy of Ecological and Environmental Sciences,Urumqi Xinjiang 830011,China;Xinjiang Key Laboratory for Environmental Pollution Monitoring and Risk Warning,Urumqi Xinjiang 830011,China;Irtysh River Basin Field Observation Station for Environmental Risk Warning,Altay Xinjiang 836500,China)

机构地区：[1]新疆农业大学资源与环境学院,新疆乌鲁木齐830052 [2]新疆维吾尔自治区生态环境科学研究院,新疆乌鲁木齐830011 [3]新疆环境污染监控与风险预警重点实验室,新疆乌鲁木齐830011 [4]新疆阿勒泰额尔齐斯河环境风险预警观测野外台站,新疆阿勒泰836500

出　　处：《新疆环境保护》2025年第1期11-22,共12页XINJIANG ENVIRONMENTAL PROTECTION

基　　金：第三次新疆综合科学考察项目(2021XJKK0700)。

摘　　要：基于CASA模型估算2010—2020年阿勒泰地区植被净初级生产力(NPP)变化,并结合SCE-UA优化方法计算出该研究区各典型植被光能利用率;采用Sen斜率估计和M-K检验、Pearson相关性分析、Hurst指数等方法研究NPP时空变化趋势。结果显示:阿勒泰地区植被NPP月均值呈“单峰型”特点,介于0~52.492 8(gC/m^(2))/a之间波动;植被NPP多年均值呈“多峰型”特点,介于100~250(gC/m^(2))/a之间波动;空间变化上,该地区植被NPP多年均值呈东北高、西南低的特点;通过预测分析,该区域植被NPP随时间变化呈逐渐减少的趋势。为保障阿勒泰地区的生态系统稳定,应加强该区域的自然保护措施,以协调区域生态环境和人类社会经济的发展平衡。Based on the CASA model,the changes in net primary productivity(NPP)of vegetation in Altay region from 2010 to 2020 were estimated,the solar energy utilization efficiency of typical vegetation was calculated using the SCE-UA optimization method.The temporal and spatial trends of NPP were studied using these methods such as Sen slope estimation,M-K test,Pearson correlation analysis,and Hurst index,etc.The results showed that the monthly average of vegetation NPP showed a unimodal pattern,fluctuating between 0~52.4928 gC·m^(-2)·a^(-1);the annual average of vegetation NPP showed a multi-peak pattern,fluctuating between 100~250 gC·m^(-2)·a^(-1);in terms of spatial variation,the annual average of vegetation NPP showed a high trend in the northeast and a low trend in the southwest;the future trend of vegetation NPP showed gradually decreasing over time.It is necessary to strengthen the natural protection measures to ensure the stability of the ecosystem in Altay region and to coordinate the development of the regional ecological environment and human social economy.

关 键 词：植被光能利用率 植被净初级生产力 CASA模型 阿勒泰地区 

分 类 号：Q948[生物学—植物学]