内蒙古草原叶面积指数时空格局与水热影响

沈贝贝; 张景; 李明; 丁蕾; 王旭; 辛晓平

doi:10.11873/j.issn.1004-0323.2022.1.0253

閬ユ劅鎶�鏈笌搴旂敤鈥衡�� 2022, Vol. 37 鈥衡�� Issue (1): 253-261.DOI: 10.11873/j.issn.1004-0323.2022.1.0253

鈥� 鑽夊湴閬ユ劅涓撴爮鈥� 涓婁竴绡� 涓嬩竴绡�

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娌堣礉璐�¹(),寮犳櫙²,鏉庢槑³,涓佽暰¹,鐜嬫棴¹,杈涙檽骞�¹()

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鏀剁鏃ユ湡:2021-06-15 淇洖鏃ユ湡:2021-12-23 鍑虹増鏃ユ湡:2022-02-20 鍙戝竷鏃ユ湡:2022-04-08
閫氳浣滆��: 杈涙檽骞�
浣滆�呯畝浠�:娌堣礉璐濓紙1992-锛夛紝濂筹紝娌冲寳杈涢泦浜猴紝鍗氬＋鐮旂┒鐢燂紝涓昏浠庝簨鑽夊師鐢熸�侀仴鎰熺爺绌躲�侲?mail锛�82101191163@caas.cn
鍩洪噾璧勫姪:
鍥藉閲嶇偣鐮斿彂璁″垝椤圭洰鈥滆崏鍦扮⒊鏀舵敮鐩戞祴璇勪及鎶�鏈悎浣滅爺绌垛��(2017YFE0104500);鍥藉鑷劧绉戝鍩洪噾鈥滃熀浜庡叏鐢熷懡鍛ㄦ湡鍒嗘瀽鐨勫灏哄害鑽夌敻鑽夊師缁忚惀鏅纰虫敹鏀爺绌垛��(41771205);璐㈡斂閮ㄥ拰鍐滀笟鍐滄潙閮ㄥ浗瀹剁幇浠ｅ啘涓氫骇涓氭妧鏈綋绯�,涓ぎ绾у叕鐩婃�х鐮旈櫌鎵�鍩烘湰绉戠爺涓氬姟璐逛笓椤�(Y2020YJ19)

The Spatiotemporal Pattern of Leaf Area Index and The Influence of Water and Heat in Inner Mongolia Grassland

Beibei Shen¹(),Jing Zhang²,Ming Li³,Lei Ding¹,Xu Wang¹,Xiaoping Xin¹()

^1.National Hulunber Grassland Ecosystem Observation and Research Station / Institute of Agricultural Resources and Regional Planning锛孋hinese Academy of Agricultural Sciences锛孊eijing 100081锛孋hina
^2.National Remote Sensing Center of China锛孊eijing 100036锛孋hina
^3.Natural Resources Comprehensive Survey Command Center锛孋hina Geological Survey锛孊eijing 100055锛孋hina

Received:2021-06-15 Revised:2021-12-23 Online:2022-02-20 Published:2022-04-08
Contact: Xiaoping Xin

鎽樿/Abstract

鎽樿锛�

鍙堕潰绉寚鏁帮紙Leaf Area Index锛� LAI锛夋槸琛ㄥ緛妞嶈鐘跺喌鐨勯噸瑕佸弬鏁帮紝涓庢琚殑鐢熼暱鍜屽彉鍖栫姸鍐靛瘑鍒囩浉鍏炽�傛帰绌跺唴钂欏彜鑽夊師LAI闀挎椂闂村簭鍒楁椂绌烘牸灞�鐗瑰緛鍙婃按鐑潯浠跺LAI鐨勫奖鍝嶏紝鍙负鍑嗙‘鎺屾彙鍐呰挋鍙よ崏鍘熷垎甯冧笌鐢熼暱鐘跺喌宸紓鎻愪緵鏁版嵁鏀拺锛屽浜嗚В鍐呰挋鍙よ崏鍘熺敓浜ц兘鍔涚殑绌洪棿鍒嗗竷鐗瑰緛鍏锋湁鍙傝�冧环鍊笺�傚熀浜�2000~2019骞碐EOV2 LAI浜у搧鏁版嵁闆嗭紝缁撳悎姘旀俯鍜岄檷姘磋祫鏂欙紝閫夊彇鍙樺寲鏂滅巼銆佸彉寮傜郴鏁板拰鐩稿叧鎬х郴鏁�3涓寚鏍囧鍐呰挋鍙よ崏鍘烲AI灞曞紑鍒嗘瀽銆傜粨鏋滄樉绀猴紝鍐呰挋鍙よ崏鍘烲AI鐢变笢鍖楀悜瑗垮崡閫掑噺锛屽骞村潎鍊间负1.34 m²/m²锛屽湪涓嶅悓鑽夊師绫诲瀷涓紝鑽掓紶鑽夊師锛�0.28 m²/m²锛�<鍏稿瀷鑽夊師锛�0.96 m²/m²锛�<鑽夌敻鑽夊師锛�2.27 m²/m²锛�<鑽夌敻锛�2.60 m²/m²锛夛紝涓斾笌鍙樺紓绯绘暟鍛堝弽姣旓紝鑽掓紶鑽夊師骞撮檯闂存尝鍔ㄦ渶鍓х儓銆傝繎20 a鍐呰挋鍙よ崏鍘烲AI鍛堟尝鍔ㄤ腑涓婂崌瓒嬪娍锛�0.02 m²/m²/a锛夛紝67.08%鍖哄煙鑽夊師LAI涓庡勾闄嶆按鏄捐憲鐩稿叧锛屼粎4.98%鍖哄煙鑽夊師LAI涓庡勾鍧囨俯鏄捐憲鐩稿叧銆傝〃鏄庡唴钂欏彜鑽夊師LAI绌洪棿鍒嗗竷鍏锋湁鍦板甫鎬х壒寰侊紝涓嶅悓鑽夊師绫诲瀷LAI涔嬮棿瀛樺湪鏄庢樉宸紓锛岄檷姘存槸鍐呰挋鍙よ崏鍘烲AI鐨勪富瑕佸奖鍝嶅洜绱犮��

鍏抽敭璇�: 鍙堕潰绉寚鏁�, GEOV2 LAI, 鏃剁┖鏍煎眬, 闄嶆按, 娓╁害, 鍐呰挋鍙よ崏鍘�

Abstract:

Leaf area index 锛圠AI锛� is an important parameter to characterize the vegetation condition锛� which is closely related to the growth and change of vegetation. The investigation of the spatiotemporal pattern of LAI in Inner Mongolia grassland over a long time series and the influence of water and heat conditions on LAI can provide data to support an accurate understanding of the differences in the distribution and growth conditions of Inner Mongolia grassland锛� meanwhile锛� it is helpful for understanding the spatial distribution characteristics of the production capacity of Inner Mongolia grassland.Based on the GEOV2 LAI product dataset from 2000 to 2019锛� three indicators锛� namely slope of variation锛� coefficient of variation and correlation coefficient锛� were selected to analyse the grassland LAI in Inner Mongolia in combination with the data of temperature and precipitation. The results show that the LAI of Inner Mongolia grassland decreases from northeast to southwest with a multi-year mean value of 1.34 m²/m²锛� and among different grassland types锛� desert grassland 锛�0.28 m²/m²锛�<typical grassland锛�0.96 m²/m²锛�<meadow grassland锛�2.27 m²/m²锛�<meadow锛�2.60 m²/m²锛夛紝and is inversely proportional to the coefficient of variation锛寃ith desert grassland showing the sharpest inter-annual fluctuations. Over the past 20 years锛宼he LAI of Inner Mongolia grassland showed an increasing trend in fluctuation锛�0.02 m²/m²/a锛夛紝67.08% of regional grassland LAI was significantly correlated with annual precipitation锛宎nd only 4.98% of regional gras-sland LAI was significantly correlated with annual mean temperature. These indicate that the spatial distribution of grassland LAI in Inner Mongolia has zonal characteristics锛� and there are significant differences between different grassland types锛� and precipitation is the main influencing factor of grassland LAI in Inner Mongolia.

Key words: Leaf Area Index锛圠AI锛�, GEOV2 LAI, Spatiotemporal changes, Precipitation, Temperature, Inner Mongolia grassland

涓浘鍒嗙被鍙�:

S812

娌堣礉璐�,寮犳櫙,鏉庢槑,涓佽暰,鐜嬫棴,杈涙檽骞�. 鍐呰挋鍙よ崏鍘熷彾闈㈢Н鎸囨暟鏃剁┖鏍煎眬涓庢按鐑奖鍝峓J]. 閬ユ劅鎶�鏈笌搴旂敤, 2022, 37(1): 253-261.

Beibei Shen,Jing Zhang,Ming Li,Lei Ding,Xu Wang,Xiaoping Xin. The Spatiotemporal Pattern of Leaf Area Index and The Influence of Water and Heat in Inner Mongolia Grassland[J]. Remote Sensing Technology and Application, 2022, 37(1): 253-261.

鍙傝�冩枃鐚�

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[4]	鏇瑰箍鐪�,闂垫晱,渚箯. 闄嗚〃姣旇緪灏勭巼瀵归仴鎰熼檰琛ㄦ俯搴﹀弽婕旂粨鏋滅殑褰卞搷鍒嗘瀽[J]. 閬ユ劅鎶�鏈笌搴旂敤, 2023, 38(4): 835-841.
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[6]	鑳¤В鍚涘痉,鏉ㄨ嫳瀹�,娼橀懌,甯告瞾妤�,鐜嬬埍杈�. 鏋佽建鍗槦鍦拌〃娓╁害鏃堕棿褰掍竴鍖栨柟娉曗�斾互MODIS涓轰緥[J]. 閬ユ劅鎶�鏈笌搴旂敤, 2023, 38(4): 855-868.
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鍐呰挋鍙よ崏鍘熷彾闈㈢Н鎸囨暟鏃剁┖鏍煎眬涓庢按鐑奖鍝�

The Spatiotemporal Pattern of Leaf Area Index and The Influence of Water and Heat in Inner Mongolia Grassland

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