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Impacts of land use and land cover changes upon
organic productivity values in Karst ecosystems: a case study of Northwest
Guangxi, China |
| Mingyang ZHANG1,Yuemin YUE1,Kelin WANG2,Hongsong CHEN2,Wei ZHANG2,Huiyu LIU3, |
| 1.Key Laboratory for Agro-ecological
Processes in Subtropical Region, Institute of Subtropical Agriculture,
Chinese Academy of Sciences, Changsha 410125, China；Huanjiang Observation
and Research Station for Karst Ecosystem, Chinese Academy of Sciences,
Huanjiang 547100, China；Graduate University
of Chinese Academy of Sciences, Beijing 100049, China; 2.Key Laboratory for Agro-ecological
Processes in Subtropical Region, Institute of Subtropical Agriculture,
Chinese Academy of Sciences, Changsha 410125, China；Huanjiang Observation
and Research Station for Karst Ecosystem, Chinese Academy of Sciences,
Huanjiang 547100, China; 3.College of Geography
Science, Nanjing Normal University, Nanjing 210046, China; |
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Abstract Karst areas are one of the most fragile regions in the world. The Karst environment is very common in southwest China with severe poverty and environmental degradation. Therefore, it is necessary to monitor the Karst ecosystem and its ability to provide goods and services for society. In this paper, we analyzed the spatial distribution of organic productivity values (OPV) in Northwest Guangxi, China in 1985, 1990, 2000, and 2005 using remote sensing and geographic information system techniques. OPV showed a decreasing trend in the last 20 years though there were fluctuations. OPV was 184.85, 117.53, 163.66 and 177.25 million Yuan in 1985, 1990, 2000 and 2005, respectively. Woodland and shrub were the two largest contributors to total OPV. They accounted for 70.51%, 69.13%, 73.92% and 66.23%, respectively, in those four years. Conversely, OPV of residential and barren rock was low with a percentage of 0.70%, 0.56%, 0.57% and 0.90%, respectively. Spatially, OPV is higher in the west than in the east. However, OPV increased in typical Karst areas but decreased in non-Karst areas. Our study indicates that ecosystem conditions in Karst areas had improved because of the application of rocky desertification control policies.
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| Keywords
Karst
organic productivity values (OPV)
land use and land cover (LULC)
spatio-temporal variations
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Issue Date: 05 March 2010
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Cao J H, Yuan D X, Tong L Q(2008). Features of Karst ecosystem and integratingmeasure for rock desertification in Southwest China. Pratacultural Science, 25: 40–50 (in Chinese)
|
|
Costanza R, d’Arge R, de Groot R, Farber S, Grasso M, Hannon B, Limburg K, Naeem S, O'Neill R V, Paruelo J, Raskin R G, Sutton P, van den Belt M(1997). The value of the world’s ecosystem services andnatural capital. Nature, 387: 253–260
doi: 10.1038/387253a0
|
|
Daily G C (1997). Nature’s Services: Societal Dependence on NaturalEcosystems. Washington D C: Island Press
|
|
Dong L X, Wang W K, Ma M G, Kong J L, Veroustraete F (2009). The changeof land cover and land use and its impact factors in upriver key regionsof the Yellow River. International Journalof Remote Sensing, 30: 1251–1265
doi: 10.1080/01431160802468248
|
|
Government Offices in Baise (2005). The issuance of the policy of returningfarmland to forest to honor the notice of the work program of governmentoffices in Baise (in Chinese)
|
|
Hu H B, Liu W J, Cao M (2008a). Impact of land use and land coverchanges on ecosystem services in Menglun, Xishuangbanna, SouthwestChina. Environmental Monitoring and Assessment, 146: 147–156
doi: 10.1007/s10661-007-0067-7
|
|
Hu Y C, Liu Y S, Wu P L, Zou X P (2008b). Rocky desertification in Guangxi Karst mountainous area: its tendency,formation causes and rehabilitation. Transactionsof the CSAE, 24(6): 96–101
|
|
Jiang L P, Qin Z H, Xie W, Wang R J, Xu B, Lu Q(2007). Estimation of grassland ecosystem services value ofChina using remote sensing data. Journalof Natural Resources, 22: 161–170 (in Chinese)
|
|
Li R Q, Dong M, Cui J Y (2007). Quantification of the impact of land-usechanges on ecosystem services: a case study in Pingbian county, China. Environmental Monitoringand Assessment, 128: 503–510
doi: 10.1007/s10661-006-9344-0
|
|
Li Y B, Wang S J, Zhou D Q (2005). Research on the ecosystem serviceevaluation of Maolan Karst forest. Earthand Environment, 33(2): 39–44 (in Chinese)
|
|
Liu J Y, Buhe A S (2000). Studyon spatial temporal feature of modern landuse change in China: usingremote sensing techniques. Quaternary Sciences, 20: 229–239 (in Chinese)
|
|
Loveland T R, J W Merchant, Ohlen D O, Brown J F (1991). Development of a land cover characteristics database for the conterminousU.S. Photogrammetric Engineering and RemoteSensing, 1991, 57(11): 1453–1463
|
|
Luo J, Wang K L, Chen H S (2008). Economic response of ecosystem servicefunctions to landuse changes in Karst region. Bulletin of Soil and Water Conservation, 28(1): 19–24 (in Chinese)
|
|
Millennium Ecosystem Assessment (2003). Ecosystems and Human Well-being. Washington D C: Island Press
|
|
Parise M, Waele J D, Gutierrez F (2008). Engineering and environmental problemsin Karst―An introduction. EngineeringGeology, 99: 91–94
doi: 10.1016/j.enggeo.2007.11.009
|
|
Running S W, Coughlan J C (1988). A generalmodel of ecosystem processes for regional applications 1: hydrologicbalance, canopy gas exchange and primary production processes. Ecological modeling, 42: 125–154
|
|
Su W C (2002). Controlling model for rocky desertification of Karstmountainous region and its preventing strategy in southwest, China. Journal of Soil and WaterConservation, 16(2): 29―32, 79 (in Chinese)
|
|
Thomthwaite C W (1948). An approach toward a rational classification of climate. Geog Rew38: 55–94
doi: 10.2307/210739
|
|
Verstraete M M, Pinty B, Myneni R B (1996). Potential and limitations of informationextraction on the terrestrial biosphere from satellite remote sensing. Remote Sensing of Environment, 58: 201–214
doi: 10.1016/S0034-4257(96)00069-7
|
|
Wang X L, Bao Y H (1999). Studyon the methods of land use dynamic change research. Progress in Geography, 18: 81–87 (in Chinese)
|
|
Wang Z M, Zhang B, Zhang S Q, Li Z Y, Liu D W, Song K S (2006). Changes of land use and of ecosystem service valuesin Sanjiang Plain, Northeast China. EnvironmentalMonitoring and Assessment, 112: 69–91
doi: 10.1007/s10661-006-0312-5
|
|
Wu K Y, Jiang Z C, Deng X H, Ye Y (2008). Ecosystem service value of restored secondary forest in the Karstic-rockyhills―A case study of Nongla National Medicine Nature Reserve,Guangxi Zhuang Autonomous Region. ChineseJournal of Eco-Agriculture, 16(4): 1011–1014 (in Chinese)
doi: 10.3724/SP.J.1011.2008.01011
|
|
Xiao H, Ouyang Z Y, Zhao J Z, Wang X K (2000). Forest ecosystem services and their ecological valuation―Acase study of tropical forest in Jianfengling of Hainan Island. Chinese Journal of Applied Ecology, 11(4): 481–484
|
|
Xiong Y, Xie G X, Zeng G M, Wang K L, Yang C H (2008). Influence of Karstemigration region land use change on ecosystem service value―usingGuangxi Huanjiang County as example. ChinaEnvironmental Science, 28(3): 210–214 (in Chinese)
|
|
Yang A X, Peng Y (2007). Summaryof study on the ecohydrological functions of Karst forest ecosystemsin Guizhou. Journal of Anhui Agri Sci, 35(36): 11995―11997, 12037 (in Chinese)
|
|
Yang W, Chang J, Xu B, Peng C H, Ge Y(2008). Ecosystem servicevalue assessment for constructed wetlands: A case study in Hangzhou, China. Ecological Economics, 68: 116–125
doi: 10.1016/j.ecolecon.2008.02.008
|
|
Ye S M, You Y Y, Zhou C J(2003). Reducing cultivated land to plantforest and grass is a necessary strategy to develop economy and protectenvironment. Forest Engineering, 19, 1–3 (in Chinese)
|
|
Yuan D X, Cai G H (1988). The Scienceof Karst Environment. Chongqing: Chongqing Science and Technology Press (in Chinese)
|
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