Land use change and soil erosion in the Maotiao River watershed of Guizhou Province

Basic information

• Case ID: INT-226-1
• Intervention type: Mixed created/non-created habitats
• Intervention description:

  ** labeled as mixed because also seems to involve protection of remaining natural forests/grasslands (NFPP) the Natural Forest Protection Program (NFPP) in 1998 and the Grain-for-Green Programme (GFG) in 1999. The Grain-for-Green Programme is also called the Conversion of Cropland to Forests and Grassland Programme (Wang et al., 2007)… provision of free grain and cash payments for participating farmers if they convert cultivated and grazing land to forests and grassland

• Landscape/sea scape ecosystem management: Yes

• Climate change impacts	Effect of Nbs on CCI	Effect measures
  Soil erosion	Positive	average annual soil loss (t ha−1 y−1) determined using the Universal Soil Loss Equation A = R ⋅ K ⋅ LS ⋅ C ⋅ P R is the rainfall-runoff erosivity factor (MJ mm ha−1 h−1 y−1), K is the soil erodibility factor (t ha h MJ−1 ha−1 mm−1), L is the slope length factor, S is the slope steepness factor, C is the cover-management practice factor, and P is the conservation supporting practice factor.

• Approach implemented in the field: Yes
• Specific location:

  The Maotiao River watershed (106°00′–106°53′E, 26°00′–26°52′N) is located in the central part of Guizhou Province, Southwest China and covers an area of 3109 km2

• Country: China
• Habitat/Biome type: Created forest | Tropical and subtropical forests | Tropical and subtropical grasslands |
• Issue specific term: Not applicable
  

Evidence

• Notes on intervention effectivness: Effectiveness assessed over time. Look at erosion rates before the interventions were implemented and in the decades after. Also look at the variables that determine erosion rates and see that those that are changing are those related to the intervention (e.g. cover-management practise which refers to vegetation) "From 1973 to 1990, dry farmland and rocky desertified land significantly increased. In contrast, shrubby land, other forestland and grassland significantly decreased, which caused accelerated soil erosion in the study area. This trend was reversed from 1990 to 2007 with an increased area of land-use types for ecological use owing to the implementation of environmental protection programs. " "Among the five factors of RUSLE, K-factor and LS-factor, generally speaking, are relatively stable and changed a little during the period 1973–2007 within Maotiao River wa- tershed...The cover-management (C-factor) and the supporting practice (P-factor), related with land-use types and management and representing the surface conditions, were perhaps the most im- portant factors that caused soil erosion change in the Maotiao River watershed."
• Is the assessment original?: Yes
• Broadtype of intervention considered: Not applicable
• Compare effectivness?: No
• Compared to the non-NBS approach: Not applicable
• Report greenhouse gas mitigation?: No
• Impacts on GHG: Not applicable
• Assess outcomes of the intervention on natural ecosystems: No
• Impacts for the ecosystem: Not reported
• Ecosystem measures:
• Assess outcomes of the intervention on people: No
• Impacts for people: Not reported
• People measures:
• Considers economic costs: No
• Economic appraisal conducted: No
• Economic appraisal described:
• Economic costs of alternative considered: No
• Compared to an alternative: Not reported

Evaluation methodology

• Type of data: Quantitative
• Is it experimental: No
• Experimental evalution done: Not applicable
• Non-experimental evalution done: Empirical case study
• Study is systematic: