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[1]CHEN Ke,YANG Shengtian,HOU Peng,et al.Long Series Analysis on NPP Variation in the Upper Minjiang River Basin and the Upper Ganjiang River Basin[J].Research of Soil and Water Conservation,2016,23(01):155-159,164.

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Long Series Analysis on NPP Variation in the Upper Minjiang River Basin and the Upper Ganjiang River Basin

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 23 Number of periods: 2016 01 Page number: 155-159,164 Column: Public date: 2016-02-28

Title:: Long Series Analysis on NPP Variation in the Upper Minjiang River Basin and the Upper Ganjiang River Basin

Author(s):: CHEN Ke¹, YANG Shengtian¹, HOU Peng², WU Linna^1,3, GUAN Yabing¹, LIU Xiaolin¹; 1. State Key Laboratory of Remote Sensing Science, School of Geography, Beijing Normal University, Beijing Key Laboratory for Remote Sensing of Environment and Digital Cities, Beijing 100875, China;
2. Satellite Environment Center, Ministry of Environmental Protection, Beijing 100094, China;
3. College of Resources and Environment Engineering, Guizhou University, Guiyang 550025, China

Keywords:: Minjiang River; Ganjiang River; NPP; ecology; remote sensing

CLC:: X87;X171

DOI:: -

Abstract:: The upper Minjiang River basin and the upper Ganjiang River basin are the important source water conservation districts of the Minjiang River and the Ganjiang River. The qualities of their ecological environments are directly related to the sustainable utilization of local water resources. The vegetation net primary productivity (NPP) has an important indicative function for ecological change. Thus, it’s necessary to analyze NPP’s long series change trends and reasons. It’s found through 6 phases of simulated NPP in the two basins since 1990 and by comparative analysis combined with DEM and fieldwork that: (1) in general, NPP in the two basins had experienced a period of rapid growth and the period from 1995 to 2000 was the fastest growth phase, which benefited from local good hydrothermal conditions and the driving force from policy as well; (2) the zones that NPP grows quickly are mainly located at higher elevations in the mountains and the underdeveloped wild areas, which is mainly due to the relatively little anthropogenic interference; (3) the NPP value for each phase in the upper Minjiang River basin was higher than that in the upper Ganjiang River basin and the former’s general growth trend was also more obvious than the latter, which was mainly due to more abundant rainfall and less damage to vegetation in the upper Minjiang River basin; (4) the NPP growth in the upper Minjiang River basin is relatively steady, while it experienced two swings in the upper Ganjiang River basin, which should be attributed to local urbanization and other economic development.

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