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.
闽江赣江上游流域长时间序列NPP变化分析
- Title:
- Long Series Analysis on NPP Variation in the Upper Minjiang River Basin and the Upper Ganjiang River Basin
- Keywords:
- Minjiang River; Ganjiang River; NPP; ecology; remote sensing
- 分类号:
- X87;X171
- 摘要:
- 闽江和赣江上游流域是闽赣水系的主要水源涵养区，其生态环境好坏直接关系到区域水资源可持续利用；而植被净初级生产力（NPP）对生态变化具有重要指示作用，因此有必要分析流域长时间序列NPP变化趋势及原因。通过对闽江和赣江上游流域NPP自1990年以来6期数据的模拟计算，结合DEM和实地考察，发现：（1）两流域NPP总体上都经历了一个快速增长期，且增长最快阶段均为1995—2000年，既得益于当地良好的水热条件，也与政策驱动有关；（2）NPP增长较快地带主要位于对自然破坏相对较少的高海拔山区和欠发达偏远地区；（3）闽江上游流域各期NPP值均高于赣江上游流域，且全流域普遍增长趋势较赣江上游流域明显，得益于其更丰沛的降水和更少的植被破坏；（4）闽江上游流域NPP增长相对持续稳定，赣江上游流域则经历了两次波动，应与城镇化等经济开发有关。
- 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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备注/Memo
收稿日期:2014-03-03;改回日期:2015-03-17。
基金项目:水利部公益性项目（200901022-01，201101037）；中央级公益性科研院所基本科研业务费专项资金（HKY-JBYW-2013-22）
作者简介:陈珂(1975-),男,贵州织金人,博士研究生,研究方向为水资源与水环境遥感。E-mail:chenkebj2000@sina.com
通讯作者:杨胜天(1965-),男,贵州贵阳人,教授,博士生导师,主要从事水资源与水环境遥感研究。E-mail:yangshengtian@bnu.edu.cn