中亚草地NPP时空动态及其驱动因素研究

doi:10.13866/j.azr.2022.03.04

干旱区研究 ›› 2022, Vol. 39 ›› Issue (3): 698-707.doi: 10.13866/j.azr.2022.03.04

• 泛第三极环境与绿色丝路 • 上一篇下一篇

中亚草地NPP时空动态及其驱动因素研究

张赟鑫^1,^2,³(),郝海超^4,⁵,范连连¹,李耀明¹,张仁平^6,⁷,李凯辉^1,³()

1.中国科学院新疆生态与地理研究所丝路绿色发展研究中心,新疆乌鲁木齐 830011
2.中国科学院大学,北京 100049
3.中国科学院巴音布鲁克草原生态系统研究站,新疆巴音布鲁克 841314
4.华东师范大学地理科学学院,上海 200062
5.华东师范大学地理信息科学教育部重点实验室,上海 200062
6.新疆大学生态与环境学院,新疆乌鲁木齐 830046
7.新疆大学绿洲生态教育部重点实验室,新疆乌鲁木齐 830046

收稿日期:2021-07-20 修回日期:2022-01-09 出版日期:2022-05-15 发布日期:2022-05-30
通讯作者: 李凯辉
作者简介:张赟鑫（1995-）,男,硕士研究生,主要从事草地生态学研究. E-mail: 516394631@qq.com
基金资助:
中国科学院战略性先导科技专项A类项目(XDA2005010304);王宽诚教育基金会(中亚咸海生态与环境修复国际研究团队)资助

Study on spatio-temporal dynamics and driving factors of NPP in Central Asian grassland

ZHANG Yunxin^1,^2,³(),HAO Haichao^4,⁵,FAN Lianlian¹,LI Yaoming¹,ZHANG Renping^6,⁷,LI Kaihui^1,³()

1. Silk Road Green Development Research Center, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, Xinjiang, China
2. University of the Chinese Academy of Sciences, Beijing 100049, China
3. Bayinbrook Grassland Ecosystem Research Station, Chinese Academy of Sciences, Bayinbrook 841314, Xinjiang, China
4. School of Geographic Sciences, East China Normal University, Shanghai 200062, China
5. Key Laboratory of Geographic Information Science, Ministry of Education, East China Normal University, Shanghai 200062, China
6. College of Ecology and Environment, Xinjiang University, Urumqi 830046, Xinjiang, China
7. Key Laboratory of Oasis Ecology of Education Ministry, Xinjiang University, Urumqi 830046, Xinjiang, China

Received:2021-07-20 Revised:2022-01-09 Online:2022-05-15 Published:2022-05-30
Contact: Kaihui LI

摘要/Abstract

摘要：

基于CASA模型和Miami模型计算中亚五国（哈萨克斯坦、塔吉克斯坦、吉尔吉斯斯坦、土库曼斯坦和乌兹别克斯坦）的草地净初级生产力（NPP）,旨在探究2001—2019年中亚草地NPP的时空动态及其驱动因素。结果表明：2001—2019年中亚地区草地的实际净初级生产力（ANPP）均值为118.9 g C·m^-2·a^-1;在空间尺度上,平原地区的草地ANPP随纬度增加而呈现由南到北逐渐增加的趋势,从平原到山地草地ANPP随海拔升高呈现明显的增加趋势;在时间尺度上,ANPP总体呈现不显著的增长趋势,近60%区域的草地ANPP未来的变化趋势将与过去相反,但不显著;在中亚草地ANPP增加的区域,人类活动占主导地位;在中亚草地ANPP降低的区域,气候变化是主要驱动力;中亚草地的ANPP与降水呈现显著正相关的区域达到67.8%,温度与中亚草地ANPP的变化关系不显著,降水是影响中亚草地ANPP变化的主要气候因子。

关键词: NPP, 中亚地区, 草地, 变化趋势, 气候变化, 人类活动

Abstract:

Based on the CASA and Miami models, the net primary productivity (NPP) of five Central Asian countries (Kazakhstan, Tajikistan, Kyrgyzstan, Turkmenistan, and Uzbekistan) was calculated in this study. The purpose was to explore the Spatio-temporal dynamics and driving factors of NPP in Central Asian grassland from 2001 to 2019. The results showed that the average ANPP of grassland in Central Asia from 2001 to 2019 was 118.9 g C·m^-2·a^-1. On the spatial scale, the ANPP of grassland in the plain area increased gradually from south to north with increasing latitude. In contrast, the ANPP of grassland from plain to mountain grassland increased with increasing altitude. On the temporal scale, the overall growth trend of ANPP was not significant, and the future change trend of grassland ANPP in approximately 60% of the region was opposite to that of the past. The trend was not significant in the region of Central Asia with increased grassland ANPP where human activities are dominant and with decreased grassland ANPP, with climate change as the main driving force. A significant positive correlation existed between ANPP and precipitation accounting for 67.8%, with no significant relationship between temperature and the change of ANPP in Central Asian grassland. Therefore, precipitation is the main climatic factor affecting the change of ANPP in Central Asian grassland.

Key words: NPP, Central Asia, grassland, change trend, climate change, human activities

张赟鑫,郝海超,范连连,李耀明,张仁平,李凯辉. 中亚草地NPP时空动态及其驱动因素研究[J]. 干旱区研究, 2022, 39(3): 698-707.

ZHANG Yunxin,HAO Haichao,FAN Lianlian,LI Yaoming,ZHANG Renping,LI Kaihui. Study on spatio-temporal dynamics and driving factors of NPP in Central Asian grassland[J]. Arid Zone Research, 2022, 39(3): 698-707.

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SANPP	情景	SPNPP	SHNPP	定义
	情景1（IDC）	+	+	气候变化导致草地ANPP增加
SANPP>0	情景2（IDH）	-	-	人为因素导致草地ANPP增加
	情景3（IDCH）	+	-	气候变化和人为因素共同导致草地ANPP增加
	情景4（DDC）	-	-	气候变化导致草地ANPP减少
SANPP<0	情景5（DDH）	+	+	人为因素导致草地ANPP减少
	情景6（DDCH）	-	+	气候变化和人为因素共同导致草地ANPP减少

中亚草地NPP时空动态及其驱动因素研究

Study on spatio-temporal dynamics and driving factors of NPP in Central Asian grassland

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