植物生态

宁夏盐池县生态系统水分利用效率时空特征及其影响因素

  • 马龙龙 ,
  • 易志远 ,
  • 魏采用 ,
  • 周峰 ,
  • 李明涛 ,
  • 乔成龙 ,
  • 杜灵通
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  • 1.宁夏大学西北土地退化与生态恢复省部共建国家重点实验室培育基地,宁夏 银川 750021
    2.宁夏大学西北退化生态系统恢复与重建教育部重点实验室,宁夏 银川 750021
    3.宁夏回族自治区遥感调查院,宁夏 银川 750021
    4.宁夏回族自治区矿产地质调查院,宁夏 银川 750021
马龙龙(1997-),男,硕士研究生,主要从事陆地生态系统碳水循环. E-mail: mall0911@qq.com
杜灵通. E-mail: dult80@qq.com

收稿日期: 2023-07-12

  修回日期: 2024-01-15

  网络出版日期: 2024-04-26

基金资助

宁夏自然科学基金重点项目(2022AAC02011);国家自然科学基金(41967027);宁夏地质局财政项目(NXCZ20220203);宁夏优秀人才支持计划(RQ0012)

Temporal and spatial characteristics of ecosystem water use efficiency and influencing factors in Yanchi County, Ningxia, China

  • MA Longlong ,
  • YI Zhiyuan ,
  • WEI Caiyong ,
  • ZHOU Feng ,
  • LI Mingtao ,
  • QIAO Chenglong ,
  • DU Lingtong
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  • 1. Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration in Northwest China, Ningxia University, Yinchuan 750021, Ningxia, China
    2. Key Laboratory for Restoration and Reconstruction of Degraded Ecosystem in Northwest China of Ministry of Education, Ningxia University, Yinchuan 750021, Ningxia, China
    3. Ningxia Institute of Remote Sensing Survey, Yinchuan 750021, Ningxia, China
    4. Ningxia Institute of Geological and Mineral Resources Survey, Yinchuan 750021, Ningxia, China

Received date: 2023-07-12

  Revised date: 2024-01-15

  Online published: 2024-04-26

摘要

水分利用效率(WUE)是衡量植物光合固碳和水分消耗之间权衡关系的重要指标。研究区域植被WUE的时空变化特征对区域生态恢复、水资源的合理利用与开发等方面至关重要。本研究基于MODIS的GPP和ET数据评估2000—2019年盐池县植被WUE的时空变化特征及其主要的影响因子。结果表明:(1) 2000—2019年盐池县的ET和GPP分别以7.61 mm·a-1和7.23 g C·m-2·a-1的速率显著增加,空间上呈西北高东南低的分布特征,具有较强的空间异质性。(2) 近20 a,盐池县植被WUE变化范围在0.80~1.11 g C·kg-1·H2O之间,多年均值为0.91 g C·kg-1·H2O,年际变化不显著;从空间上来看,全县WUE存在较强的异质性,高值主要分布在东北部,低值位于西南部。(3) 近20 a,宁夏盐池县WUE在空间上有54.70%的区域呈上升趋势,主要分布在东北部;45.30%的区域以下降趋势为主。未来,盐池县61.48%区域的植被WUE变化趋势具有较强的同向持续性;而38.52%的区域将会发生逆转。(4) 在不同研究时段,各土地利用类型的WUE均表现为:林地>耕地>草地。(5) 在年际尺度上,植被WUE与GPP呈显著正相关关系,而与ET不相关;GPP的变化主要与ET、NDVI和降水呈显著正相关关系。这表明盐池县植被恢复在增强植被生产力的同时,也加剧了区域水分消耗,为盐池未来生态植被重建和水资源的合理开发提供了科学依据。

本文引用格式

马龙龙 , 易志远 , 魏采用 , 周峰 , 李明涛 , 乔成龙 , 杜灵通 . 宁夏盐池县生态系统水分利用效率时空特征及其影响因素[J]. 干旱区研究, 2024 , 41(4) : 650 -660 . DOI: 10.13866/j.azr.2024.04.11

Abstract

Water use efficiency (WUE) is an important measure of the tradeoff between photosynthetic carbon sequestration and water consumption in ecosystems. Estimation of vegetation’ WUE and analysis of the spatiotemporal distribution of vegetation WUE are crucial for ecosystem preservation as well as the wise use and development of water resources in this area. In this study, we assessed the spatial and temporal characteristics of vegetation WUE and its main influencing factors in Salt Lake County from 2000 to 2019 on the basis of GPP and ET data from MODIS. The results were as follows: (1) Both ET and GPP increased significantly from 2000 to 2019 (P<0.01), and the rates of increase were 7.61 mm·a-1 and 7.23 g C·m-2·a-1, respectively. ET and GPP showed obvious heterogeneity in space. (2) Between 2000 and 2019, the vegetation WUE in Yanchi County fluctuated between 0.80 and 1.11 g C·kg-1·H2O, and the multiyear average value was 0.91 g C·kg-1·H2O. The rate of increase was 0.0013 g C·kg-1·H2O·a-1, but it was not significant. The vegetation WUE showed high heterogeneity in space, with high values mainly distributed in the northeast and low values in the southwest. (3) From 2000 to 2019, WUE mainly increased and decreased in 54.70% and in 45.30% of the area, respectively, in Yanchi County. In the future, 61.48% of the area in Yanchi County will show the same change trends in WUE as in the past, and 38.52% of the area will show reversed trends in WUE. (4) The WUE of each land use type in different study periods decreased in the following order: forest land > cultivated land > grassland. (5) There was a significant correlation between WUE and GPP in Yanchi County (P<0.05), whereas variations in GPP were mainly driven by changes in ET, NDVI, and precipitation, indicating that GPP is the main reason for the changes in WUE in Yanchi County. The Yanchi County Ecological Restoration Project not only enhances vegetation productivity but also increases regional water consumption, resulting in fluctuations in the WUE of the regional ecosystem. This suggests that vegetation restoration in Yanchi County has intensified regional water depletion while enhancing vegetation productivity, which provides a theoretical basis for future ecological revegetation and codevelopment of water resources in Yanchi County.

参考文献

[1] 胡中民, 于贵瑞, 王秋凤, 等. 生态系统水分利用效率研究进展[J]. 生态学报, 2009, 29(3): 1498-1507.
  [Hu Zhongmin, Yu Guirui, Wang Qiufeng, et al. Ecosystem level water use efficiency: A review[J]. Acta Ecologica Sinica, 2009, 29(3): 1498-1507.]
[2] 杜晓铮, 赵祥, 王昊宇, 等. 陆地生态系统水分利用效率对气候变化的响应研究进展[J]. 生态学报, 2018, 38(23): 8296-8305.
  [Du Xiaozheng, Zhao Xiang, Wang Haoyu, et al. Responses of terrestrial ecosystem water use efficiency to climate change: A review[J]. Acta Ecologica Sinica, 2018, 38(23): 8296-8305.]
[3] 张远东, 庞瑞, 顾峰雪, 等. 西南高山地区水分利用效率时空动态及其对气候变化的响应[J]. 生态学报, 2016, 36(6): 1515-1525.
  [Zhang Yuandong, Pang Rui, Gu Fengxue, et al. Temporal-spatial variations of WUE and its response to climate change in alpine area of southwestern China[J]. Acta Ecologica Sinica, 2016, 36(6): 1515-1525.]
[4] Niu S L, Xing X R, Zhang Z, et al. Water-use efficiency in response to climate change: from leaf to ecosystem in a temperate steppe[J]. Global Change Biology, 2011, 17(2): 1073-1082.
[5] 王云霓, 熊伟, 王彦辉, 等. 干旱半干旱地区主要树种叶片水分利用效率研究综述[J]. 世界林业研究, 2012, 25(2): 17-23.
  [Wang Yunni, Xiong Wei, Wang Yanhui, et al. A review on leaf water use efficiency of major trees species in arid and semi-arid area[J]. World Forestry Research, 2012, 25(2): 17-23.]
[6] Yu G R, Zhu X J, Fu Y L, et al. Spatial patterns and climate drivers of carbon fluxes in terrestrial ecosystems of China[J]. Global Change Biology, 2013, 19(3): 798-810.
[7] 王庆伟, 于大炮, 代力民, 等. 全球气候变化下植物水分利用效率研究进展[J]. 应用生态学报, 2010, 21(12): 3255-3265.
  [Wang Qingwei, Yu Dapao, Dai Limin, et al. Research progress in water use efficiency of plants under global climate change[J]. Chinese Journal of Applied Ecology, 2010, 21(12): 3255-3265.]
[8] 马龙龙, 杜灵通, 丹杨, 等. 基于CiteSpace的陆地生态系统碳水耦合研究现状及趋势[J]. 生态学报, 2020, 40(15): 5441-5449.
  [Ma Longlong, Du Lingtong, Dan Yang, et al. Current status and future trends for carbon and water coupling of terrestrial ecosystem based on Citespace[J]. Acta Ecologica Sinica, 2020, 40(15): 5441-5449.]
[9] 裴婷婷, 李小雁, 吴华武, 等. 黄土高原植被水分利用效率对气候和植被指数的敏感性研究[J]. 农业工程学报, 2019, 35(5): 119-125.
  [Pei Tingting, Li Xiaoyan, Wu Huawu, et al. Sensitivity of vegetation water use efficiency to climate and vegetation index in Loess Plateau, China[J]. Transactions of the Chinese Society of Agricultural Engineering, 2019, 35(5): 119-125.]
[10] 鲍超, 方创琳. 干旱区水资源开发利用对生态环境影响的研究进展与展望[J]. 地理科学进展, 2008, 27(3): 38-46.
  [Bao Chao, Fang Chuanglin. Impact of water resources exploitation and utilization on eco-environment in arid area: Progress and prospect[J]. Progress in Geography, 2008, 27(3): 38-46.]
[11] Jiao W Z, Wang L X, SmithW K, et al. Observed increasing water constraint on vegetation growth over the last three decades[J]. Nature Commununications, 2021, 12(1): 3777.
[12] 白玉洁. 中国旱区典型生态系统水分利用效率动态特征及其生物物理调控[D]. 北京: 北京林业大学, 2021.
  [Bai Yujie. Dynamics of Ecosystem Water Use Efficiency and Its Response to Biophysical Factors of Typical Ecosystems in Dryland of China[D]. Beijing: Beijing Forestry University, 2021.]
[13] Du L T, Zeng Y J, Ma L L, et al. Effects of anthropogenic revegetation on the water and carbon cycles of a desert steppe ecosystem[J]. Agricultural and Forest Meteorology, 2021, 300: 108339.
[14] 马龙龙. 植被重建背景下盐池荒漠草原不同尺度碳水循环及耦合特征[D]. 银川: 宁夏大学, 2021.
  [Ma Longlong. Carbon and Water Cycle in Yanchi Desert Steppe and Their Coupling Characteristics at Muti-scales Under the Background of Revegetation[D]. Yinchuan: Ningxia University, 2021.]
[15] 马龙龙, 杜灵通, 宫菲, 等. 基于SEBAL模型的农牧交错区蒸散演变及生态需水规律[J]. 水土保持通报, 2019, 39(4): 177-183.
  [Ma Longlong, Du Lingtong, Gong Fei, et al. Evapotranspiration evolution and ecological water requirement law in agro-pastoral ecotone based on SEBAL model[J]. Bulletin of Soil and Water Conservation, 2019, 39(4): 177-183.]
[16] 乔成龙, 杜灵通, 潘海珠, 等. 基于SEBAL模型评估干旱半干旱区人工灌丛植被对陆表蒸散的影响[J]. 农业工程学报, 2021, 37(10): 110-117.
  [Qiao Chenglong, Du Lingtong, Pan Haizhu, et al. Evaluating the effects of revegetated shrub on land surface ET in arid and semiarid areas using SEBAL model[J]. Transactions of the Chinese Society of Agricultural Engineering, 2021, 37(10): 110-117.]
[17] 刘宪锋, 胡宝怡, 任志远. 黄土高原植被生态系统水分利用效率时空变化及驱动因素[J]. 中国农业科学, 2018, 51(2): 302-314.
  [Liu Xianfeng, Hu Baoyi, Ren Zhiyuan. Spatiotemporal variation of water use efficiency and its driving forces on the Loess Plateau during 2000-2014[J]. Scientia Agricultura Sinica, 2018, 51(2): 302-314.]
[18] 宫菲, 杜灵通, 孟晨, 等. 宁夏陆地生态系统水分利用效率特征及其影响因子[J]. 生态学报, 2019, 39(24): 9068-9078.
  [Gong Fei, Du Lingtong, Meng Chen, et al. Characteristics of water use efficiency in terrestrial ecosystems and its influence factors in Ningxia Province[J]. Acta Ecologica Sinica, 2019, 39(24): 9068-9078.]
[19] 宋乃平, 杜灵通, 王磊. 盐池县2000—2012年植被变化及其驱动力[J]. 生态学报, 2015, 35(22): 7377-7386.
  [Song Naiping, Du Lingtong, Wang Lei. Vegetation dynamics over 2000-2012 and its driving factors in Yanchi County, Ningxia Province[J]. Acta Ecologica Sinica, 2015, 35(22) : 7377-7386.]
[20] 马龙龙, 杜灵通, 丹杨, 等. 基于茎流-蒸渗仪法的荒漠草原带人工灌丛群落蒸散特征[J]. 植物生态学报, 2020, 44(8): 807-818.
  [Ma Longlong, Du Lingtong, Dan Yang, et al. Characteristics of evapotranspiration in planted shrub communities in desert steppe zone based on sap flow and lysimeter method[J]. Chinese Journal of Plant Ecology, 2020, 44(8): 807-818.]
[21] 杨磊, 卫伟, 陈利顶, 等. 半干旱黄土丘陵区人工植被深层土壤干化效应[J]. 地理研究, 2012, 31(1): 71-81.
  [Yang Lei, Wei Wei, Chen Liding, et al. Soil desiccation in deep soil layers under different vegetation types in the semi-arid loess hilly region[J]. Geographical Research, 2012, 31(1): 71-81.]
[22] 丹杨, 杜灵通, 王乐, 等. 荒漠草原人工灌丛化对蒸散发及其组分的影响——以盐池县为例[J]. 生态学报, 2020, 40(16): 5638-5648.
  [Dan Yang, Du Lingtong, Wang Le, et al. Effects of planted shrub encroachment on evapotranspiration and its components in desert steppe: A case study in Yanchi county, Ningxia Hui Autonomous Region[J]. Acta Ecologica Sinica, 2020, 40(16): 5638-5648.]
[23] 刘可, 杜灵通, 候静, 等. 2000—2014年宁夏草地蒸散时空特征及演变规律[J]. 草业学报, 2018, 27(3): 1-12.
  [Liu Ke, Du Lingtong, Hou Jing, et al. Spatio-temporal characteristics and evolution of evapotranspiration of natural grassland in Ningxia during 2000-2014[J]. Acta Prataculturae Sinica, 2018, 27(3) : 1-12.]
[24] 闫宝龙, 吕世杰, 王忠武, 等. 草地灌丛化成因及其对生态系统的影响研究进展[J]. 中国草地学报, 2019, 41(2): 95-101.
  [Yan Baolong, Lv Shijie, Wang Zhongwu, et al. The advance of shrub encroachment in grassland and its impact on ecosystems[J]. Chinese Journal of Grassland, 2019, 41(2): 95-101.]
[25] 刘宪锋, 任志远, 林志慧, 等. 2000—2011年三江源区植被覆盖时空变化特征[J]. 地理学报, 2013, 68(7): 897-908.
  [Liu Xianfeng, Ren Zhiyuan, Lin Zhihui, et al. The spatial-temporal changes of vegetation coverage in the Three-River Headwater Region in recent 12 years[J]. Acta Geographica Sinica, 2013, 68(7): 897-908.]
[26] 胡悦. 基于多源数据的宁夏中部干旱带干旱信息时空变化特征研究[D]. 银川: 宁夏大学, 2017.
  [Hu Yue. Study on Temporal and Spatial Variation of Drought Characteristics Based on Multi Source Data in Arid Zone of Middle Ningxia[D]. Yinchuan: Ningxia University, 2017.]
[27] 艾则孜提约麦尔·麦麦提, 玉素甫江·如素力, 何辉, 等. 2000—2017年新疆天山植被水分利用效率时空特征及其与气候因子关系分析[J]. 植物生态学报, 2019, 43(6): 490-500.
  [Aizezitiyuemaier Maimaiti, Yusufujiang Rusuli, He Hui, et al. Spatio-temporal characteristics of vegetation water use efficiency and its relationship with climate factors in Tianshan Mountains in Xinjiang from 2000 to 2017[J]. Chinese Journal of Plant Ecology, 2019, 43(6): 490-500.]
[28] Sun Y, Piao S L, Huang M T, et al. Global patterns and climate drivers of water-use efficiency in terrestrial ecosystems deduced from satellite-based datasets and carbon cycle models[J]. Global Ecology and Biogeography, 2016, 25(3): 311-323.
[29] 邹杰, 丁建丽, 杨胜天. 近15年中亚及新疆生态系统水分利用效率时空变化分析[J]. 地理研究, 2017, 36(9): 1742-1754.
  [Zou Jie, Ding Jianli, Yang Shengtian. Spatial and temporal variation analysis of ecosystem water use efficiency in Central Asia and Xinjiang in recent 15 years[J]. Geographical Research, 2017, 36(9): 1742-1754.]
[30] 丹杨, 杜灵通, 王乐, 等. 盐池县荒漠草原人工植被重建对区域生态系统蒸散的影响[J]. 水土保持通报, 2019, 39(5): 8-15.
  [Dan Yang, Du Lingtong, Wang Le, et al. Effects of artificial vegetation reconstruction on regional ecosystem evapotranspiration in desert steppe of Yanchi County[J]. Bulletin of Soil and Water Conservation, 2019, 39(5): 8-15.]
[31] 高海东, 庞国伟, 李占斌, 等. 黄土高原植被恢复潜力研究[J]. 地理学报, 2017, 72(5): 863-874.
  [Gao Haidong, Pang Guowei, Li Zhanbin, et al. Evaluating the potential of vegetation restoration in the Loess Plateau[J]. Acta Geographica Sinica, 2017, 72(5): 863-874.]
[32] 王雅舒, 李小雁, 石芳忠, 等. 退耕还林还草工程加剧黄土高原退耕区蒸散发[J]. 科学通报, 2019, 64(Z1): 588-599.
  [Wang Yashu, Li Xiaoyan, Shi Fangzhong, et al. The Grain for Green Project intensifies evapotranspiration in the revegetation area of the Loess Plateau in China[J]. Chinese Science Bulletin, 2019, 64(Z1): 588-599.]
[33] Liu Q, Yang Z F. Quantitative estimation of the impact of climate change on actual evapotranspiration in the Yellow River Basin, China[J]. Journal of Hydrology, 2010, 395(3-4): 226-234.
[34] Goyal R K. Sensitivity of evapotranspiration to global warming: A case study of arid zone of Rajasthan (India)[J]. Agricultural Water Management, 2004, 69(1): 1-11.
[35] Xue B L, Guo Q H, Otto A, et al. Global patterns, trends, and drivers of water use efficiency from 2000 to 2013[J]. Ecosphere, 2015, 6(10): 1-18.
[36] Liu Y B, Xiao J F, Ju W M, et al. Water use efficiency of China’s terrestrial ecosystems and responses to drought[J]. Scientific Reports, 2015, 5: 13799.
[37] 丹杨. 人工灌丛化对荒漠草原蒸散的影响——以宁夏盐池县为例[D]. 银川: 宁夏大学, 2020.
  [Dan Yang. Effects of Planted Shrub Encroachment on Evapotranspiration in Desert Steppe: A Case Study in Yanchi County, Ningxia Hui Autonomous Region[D]. Yinchuan: Ningxia University, 2020.]
[38] 宫菲. 基于遥感技术的宁夏陆地生态系统碳水利用效率特征[D]. 银川: 宁夏大学, 2019.
  [Gong Fei. Characteristics of Carbon and Water Use Efficiency of Terrestrial Ecosystem in Ningxia Based on Remote Sensing[D]. Yinchuan: Ningxia University, 2019.]
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